diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirRenderer.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirRenderer.kt
index 9fafed53b61..223b8806a71 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirRenderer.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/FirRenderer.kt
@@ -62,6 +62,7 @@ class FirRenderer(builder: StringBuilder, private val mode: RenderMode = RenderM
         val renderPropertyAccessors: Boolean = true,
         val renderDeclarationAttributes: Boolean = false,
         val renderDeclarationOrigin: Boolean = false,
+        val renderPackageDirective: Boolean = false,
     ) {
         companion object {
             val Normal = RenderMode(
@@ -1368,4 +1369,10 @@ class FirRenderer(builder: StringBuilder, private val mode: RenderMode = RenderM
     override fun visitContractDescription(contractDescription: FirContractDescription) {
         require(contractDescription is FirEmptyContractDescription)
     }
+
+    override fun visitPackageDirective(packageDirective: FirPackageDirective) {
+        if (mode.renderPackageDirective) {
+            println("package ${packageDirective.packageFqName.asString()}")
+        }
+    }
 }
diff --git a/generators/frontend-api-generator/tests/org/jetbrains/kotlin/generators/tests/frontend/api/GenerateTests.kt b/generators/frontend-api-generator/tests/org/jetbrains/kotlin/generators/tests/frontend/api/GenerateTests.kt
index f01d03dc4d4..6cd8c88a5f6 100644
--- a/generators/frontend-api-generator/tests/org/jetbrains/kotlin/generators/tests/frontend/api/GenerateTests.kt
+++ b/generators/frontend-api-generator/tests/org/jetbrains/kotlin/generators/tests/frontend/api/GenerateTests.kt
@@ -16,10 +16,7 @@ import org.jetbrains.kotlin.idea.fir.frontend.api.scopes.AbstractMemberScopeByFq
 import org.jetbrains.kotlin.idea.fir.frontend.api.symbols.AbstractSymbolByFqNameTest
 import org.jetbrains.kotlin.idea.fir.frontend.api.symbols.AbstractSymbolByPsiTest
 import org.jetbrains.kotlin.idea.fir.frontend.api.symbols.AbstractSymbolByReferenceTest
-import org.jetbrains.kotlin.idea.fir.low.level.api.AbstractFirLazyBodiesCalculatorTest
-import org.jetbrains.kotlin.idea.fir.low.level.api.AbstractFirLazyDeclarationResolveTest
-import org.jetbrains.kotlin.idea.fir.low.level.api.AbstractFirOnAirResolveTest
-import org.jetbrains.kotlin.idea.fir.low.level.api.AbstractPartialRawFirBuilderTestCase
+import org.jetbrains.kotlin.idea.fir.low.level.api.*
 import org.jetbrains.kotlin.idea.fir.low.level.api.diagnostic.AbstractDiagnosticTraversalCounterTest
 import org.jetbrains.kotlin.idea.fir.low.level.api.diagnostic.AbstractFirContextCollectionTest
 import org.jetbrains.kotlin.idea.fir.low.level.api.diagnostic.compiler.based.AbstractDiagnosisCompilerTestDataSpecTest
@@ -115,6 +112,10 @@ fun main(args: Array<String>) {
             testClass<AbstractPartialRawFirBuilderTestCase> {
                 model("partialRawBuilder", testMethod = "doRawFirTest")
             }
+
+            testClass<AbstractGetOrBuildFirTest> {
+                model("getOrBuildFir")
+            }
         }
 
         testGroup(
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/firstImportNamePart.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/firstImportNamePart.kt
new file mode 100644
index 00000000000..e434939764f
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/firstImportNamePart.kt
@@ -0,0 +1 @@
+import <expr>a</expr>.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/firstImportNamePart.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/firstImportNamePart.txt
new file mode 100644
index 00000000000..ddacbeaae93
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/firstImportNamePart.txt
@@ -0,0 +1,5 @@
+KT element: KtNameReferenceExpression
+FIR element: FirImportImpl
+
+FIR element rendered:
+import a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/middleImportNamePart.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/middleImportNamePart.kt
new file mode 100644
index 00000000000..46106b8880f
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/middleImportNamePart.kt
@@ -0,0 +1 @@
+import a.<expr>b</expr>.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/middleImportNamePart.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/middleImportNamePart.txt
new file mode 100644
index 00000000000..ddacbeaae93
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/middleImportNamePart.txt
@@ -0,0 +1,5 @@
+KT element: KtNameReferenceExpression
+FIR element: FirImportImpl
+
+FIR element rendered:
+import a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/qualifiedImportNamePart.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/qualifiedImportNamePart.kt
new file mode 100644
index 00000000000..62c43abd103
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/qualifiedImportNamePart.kt
@@ -0,0 +1 @@
+import <expr>a.b</expr>.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/qualifiedImportNamePart.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/qualifiedImportNamePart.txt
new file mode 100644
index 00000000000..3e4381a8086
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/qualifiedImportNamePart.txt
@@ -0,0 +1,5 @@
+KT element: KtDotQualifiedExpression
+FIR element: FirImportImpl
+
+FIR element rendered:
+import a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportDirective.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportDirective.kt
new file mode 100644
index 00000000000..91fcfc1a4e4
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportDirective.kt
@@ -0,0 +1,3 @@
+// LOOK_UP_FOR_ELEMENT_OF_TYPE: org.jetbrains.kotlin.psi.KtImportDirective
+
+<expr>import a.b.c</expr>
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportDirective.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportDirective.txt
new file mode 100644
index 00000000000..a3cafa9c970
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportDirective.txt
@@ -0,0 +1,5 @@
+KT element: KtImportDirective
+FIR element: FirImportImpl
+
+FIR element rendered:
+import a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportName.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportName.kt
new file mode 100644
index 00000000000..191dcc0b61f
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportName.kt
@@ -0,0 +1 @@
+import <expr>a.b.c</expr>
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportName.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportName.txt
new file mode 100644
index 00000000000..3e4381a8086
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportName.txt
@@ -0,0 +1,5 @@
+KT element: KtDotQualifiedExpression
+FIR element: FirImportImpl
+
+FIR element rendered:
+import a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/firstPackageNamePart.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/firstPackageNamePart.kt
new file mode 100644
index 00000000000..6f58dd817fb
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/firstPackageNamePart.kt
@@ -0,0 +1 @@
+package <expr>a</expr>.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/firstPackageNamePart.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/firstPackageNamePart.txt
new file mode 100644
index 00000000000..221fce830d1
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/firstPackageNamePart.txt
@@ -0,0 +1,5 @@
+KT element: KtNameReferenceExpression
+FIR element: FirPackageDirectiveImpl
+
+FIR element rendered:
+package a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/middlePackageNamePart.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/middlePackageNamePart.kt
new file mode 100644
index 00000000000..cd0e829d04e
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/middlePackageNamePart.kt
@@ -0,0 +1 @@
+package a.<expr>b</expr>.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/middlePackageNamePart.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/middlePackageNamePart.txt
new file mode 100644
index 00000000000..221fce830d1
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/middlePackageNamePart.txt
@@ -0,0 +1,5 @@
+KT element: KtNameReferenceExpression
+FIR element: FirPackageDirectiveImpl
+
+FIR element rendered:
+package a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/qualifiedPackageNamePart.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/qualifiedPackageNamePart.kt
new file mode 100644
index 00000000000..56de1367b5b
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/qualifiedPackageNamePart.kt
@@ -0,0 +1 @@
+package <expr>a.b</expr>.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/qualifiedPackageNamePart.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/qualifiedPackageNamePart.txt
new file mode 100644
index 00000000000..7e13c37b9ec
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/qualifiedPackageNamePart.txt
@@ -0,0 +1,5 @@
+KT element: KtDotQualifiedExpression
+FIR element: FirPackageDirectiveImpl
+
+FIR element rendered:
+package a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageDirective.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageDirective.kt
new file mode 100644
index 00000000000..ab890d25c78
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageDirective.kt
@@ -0,0 +1 @@
+<expr>package a.b.c</expr>
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageDirective.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageDirective.txt
new file mode 100644
index 00000000000..25c32c00fc1
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageDirective.txt
@@ -0,0 +1,5 @@
+KT element: KtPackageDirective
+FIR element: FirPackageDirectiveImpl
+
+FIR element rendered:
+package a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageName.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageName.kt
new file mode 100644
index 00000000000..d5f7f924de9
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageName.kt
@@ -0,0 +1 @@
+package <expr>a.b.c</expr>
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageName.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageName.txt
new file mode 100644
index 00000000000..7e13c37b9ec
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageName.txt
@@ -0,0 +1,5 @@
+KT element: KtDotQualifiedExpression
+FIR element: FirPackageDirectiveImpl
+
+FIR element rendered:
+package a.b.c
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/firstPartOfQualifiedCallWithNestedClasses.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/firstPartOfQualifiedCallWithNestedClasses.kt
new file mode 100644
index 00000000000..636c59bf10c
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/firstPartOfQualifiedCallWithNestedClasses.kt
@@ -0,0 +1,11 @@
+class A {
+    class B {
+        class C {
+            val x = 10
+        }
+    }
+}
+
+fun x() {
+    <expr>A</expr>.B.C().x
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/firstPartOfQualifiedCallWithNestedClasses.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/firstPartOfQualifiedCallWithNestedClasses.txt
new file mode 100644
index 00000000000..ee485601e78
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/firstPartOfQualifiedCallWithNestedClasses.txt
@@ -0,0 +1,5 @@
+KT element: KtNameReferenceExpression
+FIR element: FirFunctionCallImpl
+
+FIR element rendered:
+Q|A.B|.R|/A.B.C.C|()
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/lastPartOfQualifiedCallWithNestedClasses.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/lastPartOfQualifiedCallWithNestedClasses.kt
new file mode 100644
index 00000000000..12f7e090e82
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/lastPartOfQualifiedCallWithNestedClasses.kt
@@ -0,0 +1,11 @@
+class A {
+    class B {
+        class C {
+            val x = 10
+        }
+    }
+}
+
+fun x() {
+    A.B.<expr>C()</expr>.x
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/lastPartOfQualifiedCallWithNestedClasses.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/lastPartOfQualifiedCallWithNestedClasses.txt
new file mode 100644
index 00000000000..ad5e92baca8
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/lastPartOfQualifiedCallWithNestedClasses.txt
@@ -0,0 +1,5 @@
+KT element: KtCallExpression
+FIR element: FirFunctionCallImpl
+
+FIR element rendered:
+Q|A.B|.R|/A.B.C.C|()
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/middlePartOfQualifiedCallWithNestedClasses.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/middlePartOfQualifiedCallWithNestedClasses.kt
new file mode 100644
index 00000000000..18b2a54b404
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/middlePartOfQualifiedCallWithNestedClasses.kt
@@ -0,0 +1,11 @@
+class A {
+    class B {
+        class C {
+            val x = 10
+        }
+    }
+}
+
+fun x() {
+    A.<expr>B</expr>.C().x
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/middlePartOfQualifiedCallWithNestedClasses.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/middlePartOfQualifiedCallWithNestedClasses.txt
new file mode 100644
index 00000000000..51e244efac6
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/middlePartOfQualifiedCallWithNestedClasses.txt
@@ -0,0 +1,5 @@
+KT element: KtNameReferenceExpression
+FIR element: FirResolvedQualifierImpl
+
+FIR element rendered:
+Q|A.B|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/qualifiedPartOfQualifiedCallWithNestedClasses.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/qualifiedPartOfQualifiedCallWithNestedClasses.kt
new file mode 100644
index 00000000000..0589f745162
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/qualifiedPartOfQualifiedCallWithNestedClasses.kt
@@ -0,0 +1,11 @@
+class A {
+    class B {
+        class C {
+            val x = 10
+        }
+    }
+}
+
+fun x() {
+    <expr>A.B</expr>.C().x
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/qualifiedPartOfQualifiedCallWithNestedClasses.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/qualifiedPartOfQualifiedCallWithNestedClasses.txt
new file mode 100644
index 00000000000..aed76db4cbf
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/qualifiedPartOfQualifiedCallWithNestedClasses.txt
@@ -0,0 +1,5 @@
+KT element: KtDotQualifiedExpression
+FIR element: FirFunctionCallImpl
+
+FIR element rendered:
+Q|A.B|.R|/A.B.C.C|()
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCount.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCount.kt
new file mode 100644
index 00000000000..92428c462c7
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCount.kt
@@ -0,0 +1 @@
+fun x(): <expr>List<Int, String></expr> = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCount.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCount.txt
new file mode 100644
index 00000000000..57d52d73b68
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCount.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeReference
+FIR element: FirErrorTypeRefImpl
+
+FIR element rendered:
+<ERROR TYPE REF: Wrong number of type arguments>
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountArgument.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountArgument.kt
new file mode 100644
index 00000000000..f74bf57bba0
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountArgument.kt
@@ -0,0 +1 @@
+fun x(): List<Int, <expr>String</expr>> = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountArgument.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountArgument.txt
new file mode 100644
index 00000000000..ce167e13858
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountArgument.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeProjection
+FIR element: FirTypeProjectionWithVarianceImpl
+
+FIR element rendered:
+R|kotlin/String|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountFirstArgument.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountFirstArgument.kt
new file mode 100644
index 00000000000..50dda1c7177
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountFirstArgument.kt
@@ -0,0 +1 @@
+fun x(): List< <expr>String</expr>, Int > = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountFirstArgument.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountFirstArgument.txt
new file mode 100644
index 00000000000..ce167e13858
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountFirstArgument.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeProjection
+FIR element: FirTypeProjectionWithVarianceImpl
+
+FIR element rendered:
+R|kotlin/String|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountLastArgument.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountLastArgument.kt
new file mode 100644
index 00000000000..f74bf57bba0
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountLastArgument.kt
@@ -0,0 +1 @@
+fun x(): List<Int, <expr>String</expr>> = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountLastArgument.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountLastArgument.txt
new file mode 100644
index 00000000000..ce167e13858
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountLastArgument.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeProjection
+FIR element: FirTypeProjectionWithVarianceImpl
+
+FIR element rendered:
+R|kotlin/String|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/nestedTypeArgument.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/nestedTypeArgument.kt
new file mode 100644
index 00000000000..fb72d2fad73
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/nestedTypeArgument.kt
@@ -0,0 +1 @@
+fun x(): Map<String, List< <expr> Int </expr> >> = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/nestedTypeArgument.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/nestedTypeArgument.txt
new file mode 100644
index 00000000000..6be1d1f2b50
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/nestedTypeArgument.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeProjection
+FIR element: FirTypeProjectionWithVarianceImpl
+
+FIR element rendered:
+R|kotlin/Int|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/typeArgument.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/typeArgument.kt
new file mode 100644
index 00000000000..7c7389ceb39
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/typeArgument.kt
@@ -0,0 +1 @@
+fun x(): Map<String, <expr> List<Int>  </expr> > = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/typeArgument.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/typeArgument.txt
new file mode 100644
index 00000000000..3e4f0e721a7
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/typeArgument.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeProjection
+FIR element: FirTypeProjectionWithVarianceImpl
+
+FIR element rendered:
+R|kotlin/collections/List<kotlin/Int>|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeArgumentResolvedTypeConsturctor.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeArgumentResolvedTypeConsturctor.kt
new file mode 100644
index 00000000000..2da0bc0521a
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeArgumentResolvedTypeConsturctor.kt
@@ -0,0 +1 @@
+fun x(): <expr>List<UNRESOVLED></expr> = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeArgumentResolvedTypeConsturctor.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeArgumentResolvedTypeConsturctor.txt
new file mode 100644
index 00000000000..4b9ed7364a8
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeArgumentResolvedTypeConsturctor.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeReference
+FIR element: FirResolvedTypeRefImpl
+
+FIR element rendered:
+R|kotlin/collections/List<ERROR CLASS: Symbol not found for UNRESOVLED>|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedNestedTypeArgument.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedNestedTypeArgument.kt
new file mode 100644
index 00000000000..8f45d385842
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedNestedTypeArgument.kt
@@ -0,0 +1 @@
+fun x(): UNRESOLVED<String, List< <expr> Int </expr> >> = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedNestedTypeArgument.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedNestedTypeArgument.txt
new file mode 100644
index 00000000000..6be1d1f2b50
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedNestedTypeArgument.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeProjection
+FIR element: FirTypeProjectionWithVarianceImpl
+
+FIR element rendered:
+R|kotlin/Int|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedTypeArgument.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedTypeArgument.kt
new file mode 100644
index 00000000000..e9c1214fcf6
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedTypeArgument.kt
@@ -0,0 +1 @@
+fun x(): UNRESOLVED<String, <expr> List<Int>  </expr> > = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedTypeArgument.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedTypeArgument.txt
new file mode 100644
index 00000000000..3e4f0e721a7
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedTypeArgument.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeProjection
+FIR element: FirTypeProjectionWithVarianceImpl
+
+FIR element rendered:
+R|kotlin/collections/List<kotlin/Int>|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/wholeType.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/wholeType.kt
new file mode 100644
index 00000000000..a2185bf820c
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/wholeType.kt
@@ -0,0 +1 @@
+fun x(): <expr> Map<String, List<Int>> </expr> = TODO()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/wholeType.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/wholeType.txt
new file mode 100644
index 00000000000..c4129939fcc
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/wholeType.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeReference
+FIR element: FirResolvedTypeRefImpl
+
+FIR element rendered:
+R|kotlin/collections/Map<kotlin/String, kotlin/collections/List<kotlin/Int>>|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/classTypeParemeter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/classTypeParemeter.kt
new file mode 100644
index 00000000000..4da19637300
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/classTypeParemeter.kt
@@ -0,0 +1 @@
+class X< <expr>T</expr> >()
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/classTypeParemeter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/classTypeParemeter.txt
new file mode 100644
index 00000000000..d4b60370963
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/classTypeParemeter.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeParameter
+FIR element: FirTypeParameterImpl
+
+FIR element rendered:
+T
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/enumEntry.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/enumEntry.kt
new file mode 100644
index 00000000000..0de0cd539b0
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/enumEntry.kt
@@ -0,0 +1,3 @@
+enum class X {
+    <expr>ENTRY</expr>
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/enumEntry.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/enumEntry.txt
new file mode 100644
index 00000000000..a20ccf8710c
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/enumEntry.txt
@@ -0,0 +1,5 @@
+KT element: KtEnumEntry
+FIR element: FirEnumEntryImpl
+
+FIR element rendered:
+public final static enum entry ENTRY: R|X|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionTypeParemeter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionTypeParemeter.kt
new file mode 100644
index 00000000000..a4626abdf39
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionTypeParemeter.kt
@@ -0,0 +1 @@
+fun x< <expr>T</expr> > foo(){}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionTypeParemeter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionTypeParemeter.txt
new file mode 100644
index 00000000000..d4b60370963
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionTypeParemeter.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeParameter
+FIR element: FirTypeParameterImpl
+
+FIR element rendered:
+T
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionValueParameter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionValueParameter.kt
new file mode 100644
index 00000000000..3b8e823282d
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionValueParameter.kt
@@ -0,0 +1,3 @@
+fun foo(<expr>x: Int</expr>) {
+
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionValueParameter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionValueParameter.txt
new file mode 100644
index 00000000000..fc58aacaa82
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionValueParameter.txt
@@ -0,0 +1,5 @@
+KT element: KtParameter
+FIR element: FirValueParameterImpl
+
+FIR element rendered:
+x: R|kotlin/Int|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/getter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/getter.kt
new file mode 100644
index 00000000000..3a9aa5bfdfe
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/getter.kt
@@ -0,0 +1,2 @@
+val x: String
+    <expr>get() = ""</expr>
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/getter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/getter.txt
new file mode 100644
index 00000000000..abd858fa499
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/getter.txt
@@ -0,0 +1,7 @@
+KT element: KtPropertyAccessor
+FIR element: FirPropertyAccessorImpl
+
+FIR element rendered:
+public get(): R|kotlin/String| {
+    ^ String()
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localClass.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localClass.kt
new file mode 100644
index 00000000000..6a627bec0f5
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localClass.kt
@@ -0,0 +1,7 @@
+fun y() {
+    <expr>
+    class X {
+        fun y(): String
+    }
+    </expr>
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localClass.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localClass.txt
new file mode 100644
index 00000000000..6b56c6bde71
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localClass.txt
@@ -0,0 +1,12 @@
+KT element: KtClass
+FIR element: FirRegularClassImpl
+
+FIR element rendered:
+local final class X : R|kotlin/Any| {
+    public constructor(): R|X| {
+        super<R|kotlin/Any|>()
+    }
+
+    public final fun y(): R|kotlin/String|
+
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localFunction.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localFunction.kt
new file mode 100644
index 00000000000..52e7baaf137
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localFunction.kt
@@ -0,0 +1,5 @@
+fun y() {
+    <expr>
+    fun x(): String = ""
+    </expr>
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localFunction.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localFunction.txt
new file mode 100644
index 00000000000..097d31b5d23
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localFunction.txt
@@ -0,0 +1,7 @@
+KT element: KtNamedFunction
+FIR element: FirSimpleFunctionImpl
+
+FIR element rendered:
+local final fun x(): R|kotlin/String| {
+    ^x String()
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localProperty.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localProperty.kt
new file mode 100644
index 00000000000..70a67dbe96f
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localProperty.kt
@@ -0,0 +1,5 @@
+fun y() {
+    <expr>
+    val x: String = ""
+    </expr>
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localProperty.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localProperty.txt
new file mode 100644
index 00000000000..022ef4b78fa
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localProperty.txt
@@ -0,0 +1,5 @@
+KT element: KtProperty
+FIR element: FirPropertyImpl
+
+FIR element rendered:
+lval x: R|kotlin/String| = String()
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberFunction.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberFunction.kt
new file mode 100644
index 00000000000..e426d15bae7
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberFunction.kt
@@ -0,0 +1,5 @@
+class Y {
+    <expr>
+    fun x(): String = ""
+    </expr>
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberFunction.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberFunction.txt
new file mode 100644
index 00000000000..557e2ebd431
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberFunction.txt
@@ -0,0 +1,7 @@
+KT element: KtNamedFunction
+FIR element: FirSimpleFunctionImpl
+
+FIR element rendered:
+public final fun x(): R|kotlin/String| {
+    ^x String()
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberProperty.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberProperty.kt
new file mode 100644
index 00000000000..dd56794a76b
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberProperty.kt
@@ -0,0 +1,5 @@
+class Y {
+    <expr>
+    val x: String = ""
+    </expr>
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberProperty.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberProperty.txt
new file mode 100644
index 00000000000..ca59822541a
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberProperty.txt
@@ -0,0 +1,6 @@
+KT element: KtProperty
+FIR element: FirPropertyImpl
+
+FIR element rendered:
+public final val x: R|kotlin/String| = String()
+    public get(): R|kotlin/String|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberTypeAlias.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberTypeAlias.kt
new file mode 100644
index 00000000000..f76e67549ef
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberTypeAlias.kt
@@ -0,0 +1,5 @@
+class Y {
+    <expr>
+    typealias Str = String
+    </expr>
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberTypeAlias.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberTypeAlias.txt
new file mode 100644
index 00000000000..8879e3425b7
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberTypeAlias.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeAlias
+FIR element: FirTypeAliasImpl
+
+FIR element rendered:
+public final typealias Str = R|kotlin/String|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/nestedClass.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/nestedClass.kt
new file mode 100644
index 00000000000..b8c5f1c4061
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/nestedClass.kt
@@ -0,0 +1,7 @@
+class Y {
+    <expr>
+    class X {
+        fun y(): String
+    }
+    </expr>
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/nestedClass.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/nestedClass.txt
new file mode 100644
index 00000000000..ac046caff9f
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/nestedClass.txt
@@ -0,0 +1,12 @@
+KT element: KtClass
+FIR element: FirRegularClassImpl
+
+FIR element rendered:
+public final class X : R|kotlin/Any| {
+    public constructor(): R|Y.X| {
+        super<R|kotlin/Any|>()
+    }
+
+    public final fun y(): R|kotlin/String|
+
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValValueParameter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValValueParameter.kt
new file mode 100644
index 00000000000..d7b48079617
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValValueParameter.kt
@@ -0,0 +1 @@
+class X(<expr>val x: Int</expr>)
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValValueParameter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValValueParameter.txt
new file mode 100644
index 00000000000..fc58aacaa82
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValValueParameter.txt
@@ -0,0 +1,5 @@
+KT element: KtParameter
+FIR element: FirValueParameterImpl
+
+FIR element rendered:
+x: R|kotlin/Int|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValueParameter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValueParameter.kt
new file mode 100644
index 00000000000..af00da3974b
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValueParameter.kt
@@ -0,0 +1 @@
+class X(<expr>x: Int</expr>)
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValueParameter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValueParameter.txt
new file mode 100644
index 00000000000..fc58aacaa82
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValueParameter.txt
@@ -0,0 +1,5 @@
+KT element: KtParameter
+FIR element: FirValueParameterImpl
+
+FIR element rendered:
+x: R|kotlin/Int|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/secondaryConstructorValueParameter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/secondaryConstructorValueParameter.kt
new file mode 100644
index 00000000000..5f680f07a6e
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/secondaryConstructorValueParameter.kt
@@ -0,0 +1,3 @@
+class X(x: Int) {
+    constructor(<expr>y: String</expr>): this(1)
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/secondaryConstructorValueParameter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/secondaryConstructorValueParameter.txt
new file mode 100644
index 00000000000..f18e42382a3
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/secondaryConstructorValueParameter.txt
@@ -0,0 +1,5 @@
+KT element: KtParameter
+FIR element: FirValueParameterImpl
+
+FIR element rendered:
+y: R|kotlin/String|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/setter.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/setter.kt
new file mode 100644
index 00000000000..6f79ddb4e20
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/setter.kt
@@ -0,0 +1,2 @@
+var x: String
+    <expr>set(value) {}</expr>
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/setter.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/setter.txt
new file mode 100644
index 00000000000..0e6a12536bb
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/setter.txt
@@ -0,0 +1,6 @@
+KT element: KtPropertyAccessor
+FIR element: FirPropertyAccessorImpl
+
+FIR element rendered:
+public set(value: R|kotlin/String|): R|kotlin/Unit| {
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelClass.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelClass.kt
new file mode 100644
index 00000000000..ca58b783628
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelClass.kt
@@ -0,0 +1,5 @@
+<expr>
+class X {
+    fun y(): String
+}
+</expr>
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelClass.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelClass.txt
new file mode 100644
index 00000000000..17ed907f1be
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelClass.txt
@@ -0,0 +1,12 @@
+KT element: KtClass
+FIR element: FirRegularClassImpl
+
+FIR element rendered:
+public final class X : R|kotlin/Any| {
+    public constructor(): R|X| {
+        super<R|kotlin/Any|>()
+    }
+
+    public final fun y(): R|kotlin/String|
+
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelFunction.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelFunction.kt
new file mode 100644
index 00000000000..339b45f7aec
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelFunction.kt
@@ -0,0 +1,5 @@
+<expr>
+fun x() {
+    fun y(): String
+}
+</expr>
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelFunction.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelFunction.txt
new file mode 100644
index 00000000000..8de3e1a8e7c
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelFunction.txt
@@ -0,0 +1,8 @@
+KT element: KtNamedFunction
+FIR element: FirSimpleFunctionImpl
+
+FIR element rendered:
+public final fun x(): R|kotlin/Unit| {
+    local final fun y(): R|kotlin/String|
+
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelProperty.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelProperty.kt
new file mode 100644
index 00000000000..4a15fa0c07c
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelProperty.kt
@@ -0,0 +1,3 @@
+<expr>
+val x = 1
+</expr>
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelProperty.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelProperty.txt
new file mode 100644
index 00000000000..1d51d7ef6e3
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelProperty.txt
@@ -0,0 +1,6 @@
+KT element: KtProperty
+FIR element: FirPropertyImpl
+
+FIR element rendered:
+public final val x: R|kotlin/Int| = Int(1)
+    public get(): R|kotlin/Int|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelTypelTypeAlias.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelTypelTypeAlias.kt
new file mode 100644
index 00000000000..ea103056fa4
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelTypelTypeAlias.kt
@@ -0,0 +1,3 @@
+<expr>
+typealias Str = String
+</expr>
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelTypelTypeAlias.txt b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelTypelTypeAlias.txt
new file mode 100644
index 00000000000..8879e3425b7
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelTypelTypeAlias.txt
@@ -0,0 +1,5 @@
+KT element: KtTypeAlias
+FIR element: FirTypeAliasImpl
+
+FIR element rendered:
+public final typealias Str = R|kotlin/String|
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/AbstractGetOrBuildFirTest.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/AbstractGetOrBuildFirTest.kt
new file mode 100644
index 00000000000..d1278795524
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/AbstractGetOrBuildFirTest.kt
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.fir.low.level.api
+
+import com.intellij.psi.PsiElement
+import com.intellij.psi.util.PsiTreeUtil
+import org.jetbrains.kotlin.fir.FirElement
+import org.jetbrains.kotlin.fir.FirRenderer
+import org.jetbrains.kotlin.fir.declarations.FirImport
+import org.jetbrains.kotlin.fir.render
+import org.jetbrains.kotlin.idea.fir.low.level.api.api.getOrBuildFir
+import org.jetbrains.kotlin.idea.fir.low.level.api.test.base.AbstractLowLevelApiSingleFileTest
+import org.jetbrains.kotlin.idea.fir.low.level.api.test.base.expressionMarkerProvider
+import org.jetbrains.kotlin.psi.KtElement
+import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.test.builders.TestConfigurationBuilder
+import org.jetbrains.kotlin.test.directives.model.SimpleDirectivesContainer
+import org.jetbrains.kotlin.test.services.TestModuleStructure
+import org.jetbrains.kotlin.test.services.TestServices
+import org.jetbrains.kotlin.test.services.assertions
+
+abstract class AbstractGetOrBuildFirTest : AbstractLowLevelApiSingleFileTest() {
+    override fun configureTest(builder: TestConfigurationBuilder) {
+        super.configureTest(builder)
+        with(builder) {
+            useDirectives(Directives)
+        }
+    }
+
+    override fun doTestByFileStructure(ktFile: KtFile, moduleStructure: TestModuleStructure, testServices: TestServices) {
+        val selectedElement = getElementOfType(ktFile, moduleStructure, testServices) as KtElement
+
+        val actual = resolveWithClearCaches(ktFile) { state ->
+            val fir = selectedElement.getOrBuildFir(state)
+            """|KT element: ${selectedElement::class.simpleName}
+               |FIR element: ${fir::class.simpleName}
+               |
+               |FIR element rendered:
+               |${render(fir)}""".trimMargin()
+        }
+        testServices.assertions.assertEqualsToFile(testDataFileSibling(".txt"), actual)
+    }
+
+    private fun getElementOfType(ktFile: KtFile, moduleStructure: TestModuleStructure, testServices: TestServices): PsiElement {
+        val selectedElement = testServices.expressionMarkerProvider.getSelectedElement(ktFile)
+        val expectedType = moduleStructure.allDirectives[Directives.LOOK_UP_FOR_ELEMENT_OF_TYPE].firstOrNull() ?: return selectedElement
+        @Suppress("UNCHECKED_CAST") val expectedClass = Class.forName(expectedType) as Class<PsiElement>
+        if (expectedClass.isInstance(selectedElement)) return selectedElement
+
+        return listOfNotNull(
+            PsiTreeUtil.getChildOfType(selectedElement, expectedClass),
+        ).single { it.textRange == selectedElement.textRange }
+    }
+
+    private fun render(firElement: FirElement): String = when (firElement) {
+        is FirImport -> "import ${firElement.importedFqName}"
+        else -> firElement.render(renderingMode)
+    }
+
+    private val renderingMode = FirRenderer.RenderMode.Normal.copy(
+        renderPackageDirective = true,
+    )
+
+    private object Directives : SimpleDirectivesContainer() {
+        val LOOK_UP_FOR_ELEMENT_OF_TYPE by stringDirective("LOOK_UP_FOR_ELEMENT_OF_TYPE")
+    }
+}
\ No newline at end of file
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/GetOrBuildFirTestGenerated.java b/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/GetOrBuildFirTestGenerated.java
new file mode 100644
index 00000000000..cde7ad9dfee
--- /dev/null
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/GetOrBuildFirTestGenerated.java
@@ -0,0 +1,340 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.fir.low.level.api;
+
+import com.intellij.testFramework.TestDataPath;
+import org.jetbrains.kotlin.test.util.KtTestUtil;
+import org.jetbrains.kotlin.test.TestMetadata;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.util.regex.Pattern;
+
+/** This class is generated by {@link GenerateNewCompilerTests.kt}. DO NOT MODIFY MANUALLY */
+@SuppressWarnings("all")
+@TestMetadata("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir")
+@TestDataPath("$PROJECT_ROOT")
+public class GetOrBuildFirTestGenerated extends AbstractGetOrBuildFirTest {
+    @Test
+    public void testAllFilesPresentInGetOrBuildFir() throws Exception {
+        KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir"), Pattern.compile("^(.+)\\.kt$"), null, true);
+    }
+
+    @Nested
+    @TestMetadata("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport")
+    @TestDataPath("$PROJECT_ROOT")
+    public class InImport {
+        @Test
+        public void testAllFilesPresentInInImport() throws Exception {
+            KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport"), Pattern.compile("^(.+)\\.kt$"), null, true);
+        }
+
+        @Test
+        @TestMetadata("firstImportNamePart.kt")
+        public void testFirstImportNamePart() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/firstImportNamePart.kt");
+        }
+
+        @Test
+        @TestMetadata("middleImportNamePart.kt")
+        public void testMiddleImportNamePart() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/middleImportNamePart.kt");
+        }
+
+        @Test
+        @TestMetadata("qualifiedImportNamePart.kt")
+        public void testQualifiedImportNamePart() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/qualifiedImportNamePart.kt");
+        }
+
+        @Test
+        @TestMetadata("wholeImportDirective.kt")
+        public void testWholeImportDirective() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportDirective.kt");
+        }
+
+        @Test
+        @TestMetadata("wholeImportName.kt")
+        public void testWholeImportName() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inImport/wholeImportName.kt");
+        }
+    }
+
+    @Nested
+    @TestMetadata("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage")
+    @TestDataPath("$PROJECT_ROOT")
+    public class InPackage {
+        @Test
+        public void testAllFilesPresentInInPackage() throws Exception {
+            KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage"), Pattern.compile("^(.+)\\.kt$"), null, true);
+        }
+
+        @Test
+        @TestMetadata("firstPackageNamePart.kt")
+        public void testFirstPackageNamePart() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/firstPackageNamePart.kt");
+        }
+
+        @Test
+        @TestMetadata("middlePackageNamePart.kt")
+        public void testMiddlePackageNamePart() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/middlePackageNamePart.kt");
+        }
+
+        @Test
+        @TestMetadata("qualifiedPackageNamePart.kt")
+        public void testQualifiedPackageNamePart() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/qualifiedPackageNamePart.kt");
+        }
+
+        @Test
+        @TestMetadata("wholePackageDirective.kt")
+        public void testWholePackageDirective() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageDirective.kt");
+        }
+
+        @Test
+        @TestMetadata("wholePackageName.kt")
+        public void testWholePackageName() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/inPackage/wholePackageName.kt");
+        }
+    }
+
+    @Nested
+    @TestMetadata("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions")
+    @TestDataPath("$PROJECT_ROOT")
+    public class QualifiedExpressions {
+        @Test
+        public void testAllFilesPresentInQualifiedExpressions() throws Exception {
+            KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions"), Pattern.compile("^(.+)\\.kt$"), null, true);
+        }
+
+        @Test
+        @TestMetadata("firstPartOfQualifiedCallWithNestedClasses.kt")
+        public void testFirstPartOfQualifiedCallWithNestedClasses() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/firstPartOfQualifiedCallWithNestedClasses.kt");
+        }
+
+        @Test
+        @TestMetadata("lastPartOfQualifiedCallWithNestedClasses.kt")
+        public void testLastPartOfQualifiedCallWithNestedClasses() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/lastPartOfQualifiedCallWithNestedClasses.kt");
+        }
+
+        @Test
+        @TestMetadata("middlePartOfQualifiedCallWithNestedClasses.kt")
+        public void testMiddlePartOfQualifiedCallWithNestedClasses() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/middlePartOfQualifiedCallWithNestedClasses.kt");
+        }
+
+        @Test
+        @TestMetadata("qualifiedPartOfQualifiedCallWithNestedClasses.kt")
+        public void testQualifiedPartOfQualifiedCallWithNestedClasses() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/qualifiedExpressions/qualifiedPartOfQualifiedCallWithNestedClasses.kt");
+        }
+    }
+
+    @Nested
+    @TestMetadata("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types")
+    @TestDataPath("$PROJECT_ROOT")
+    public class Types {
+        @Test
+        public void testAllFilesPresentInTypes() throws Exception {
+            KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types"), Pattern.compile("^(.+)\\.kt$"), null, true);
+        }
+
+        @Test
+        @TestMetadata("invalidTypeArgumentsCount.kt")
+        public void testInvalidTypeArgumentsCount() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCount.kt");
+        }
+
+        @Test
+        @TestMetadata("invalidTypeArgumentsCountArgument.kt")
+        public void testInvalidTypeArgumentsCountArgument() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountArgument.kt");
+        }
+
+        @Test
+        @TestMetadata("invalidTypeArgumentsCountFirstArgument.kt")
+        public void testInvalidTypeArgumentsCountFirstArgument() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountFirstArgument.kt");
+        }
+
+        @Test
+        @TestMetadata("invalidTypeArgumentsCountLastArgument.kt")
+        public void testInvalidTypeArgumentsCountLastArgument() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/invalidTypeArgumentsCountLastArgument.kt");
+        }
+
+        @Test
+        @TestMetadata("nestedTypeArgument.kt")
+        public void testNestedTypeArgument() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/nestedTypeArgument.kt");
+        }
+
+        @Test
+        @TestMetadata("typeArgument.kt")
+        public void testTypeArgument() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/typeArgument.kt");
+        }
+
+        @Test
+        @TestMetadata("unresolvedTypeArgumentResolvedTypeConsturctor.kt")
+        public void testUnresolvedTypeArgumentResolvedTypeConsturctor() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeArgumentResolvedTypeConsturctor.kt");
+        }
+
+        @Test
+        @TestMetadata("unresolvedTypeConsturctorResolvedNestedTypeArgument.kt")
+        public void testUnresolvedTypeConsturctorResolvedNestedTypeArgument() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedNestedTypeArgument.kt");
+        }
+
+        @Test
+        @TestMetadata("unresolvedTypeConsturctorResolvedTypeArgument.kt")
+        public void testUnresolvedTypeConsturctorResolvedTypeArgument() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/unresolvedTypeConsturctorResolvedTypeArgument.kt");
+        }
+
+        @Test
+        @TestMetadata("wholeType.kt")
+        public void testWholeType() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/types/wholeType.kt");
+        }
+    }
+
+    @Nested
+    @TestMetadata("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration")
+    @TestDataPath("$PROJECT_ROOT")
+    public class WholeDeclaration {
+        @Test
+        public void testAllFilesPresentInWholeDeclaration() throws Exception {
+            KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration"), Pattern.compile("^(.+)\\.kt$"), null, true);
+        }
+
+        @Test
+        @TestMetadata("classTypeParemeter.kt")
+        public void testClassTypeParemeter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/classTypeParemeter.kt");
+        }
+
+        @Test
+        @TestMetadata("enumEntry.kt")
+        public void testEnumEntry() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/enumEntry.kt");
+        }
+
+        @Test
+        @TestMetadata("functionTypeParemeter.kt")
+        public void testFunctionTypeParemeter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionTypeParemeter.kt");
+        }
+
+        @Test
+        @TestMetadata("functionValueParameter.kt")
+        public void testFunctionValueParameter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/functionValueParameter.kt");
+        }
+
+        @Test
+        @TestMetadata("getter.kt")
+        public void testGetter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/getter.kt");
+        }
+
+        @Test
+        @TestMetadata("localClass.kt")
+        public void testLocalClass() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localClass.kt");
+        }
+
+        @Test
+        @TestMetadata("localFunction.kt")
+        public void testLocalFunction() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localFunction.kt");
+        }
+
+        @Test
+        @TestMetadata("localProperty.kt")
+        public void testLocalProperty() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/localProperty.kt");
+        }
+
+        @Test
+        @TestMetadata("memberFunction.kt")
+        public void testMemberFunction() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberFunction.kt");
+        }
+
+        @Test
+        @TestMetadata("memberProperty.kt")
+        public void testMemberProperty() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberProperty.kt");
+        }
+
+        @Test
+        @TestMetadata("memberTypeAlias.kt")
+        public void testMemberTypeAlias() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/memberTypeAlias.kt");
+        }
+
+        @Test
+        @TestMetadata("nestedClass.kt")
+        public void testNestedClass() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/nestedClass.kt");
+        }
+
+        @Test
+        @TestMetadata("primaryConstructorValValueParameter.kt")
+        public void testPrimaryConstructorValValueParameter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValValueParameter.kt");
+        }
+
+        @Test
+        @TestMetadata("primaryConstructorValueParameter.kt")
+        public void testPrimaryConstructorValueParameter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/primaryConstructorValueParameter.kt");
+        }
+
+        @Test
+        @TestMetadata("secondaryConstructorValueParameter.kt")
+        public void testSecondaryConstructorValueParameter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/secondaryConstructorValueParameter.kt");
+        }
+
+        @Test
+        @TestMetadata("setter.kt")
+        public void testSetter() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/setter.kt");
+        }
+
+        @Test
+        @TestMetadata("topLevelClass.kt")
+        public void testTopLevelClass() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelClass.kt");
+        }
+
+        @Test
+        @TestMetadata("topLevelFunction.kt")
+        public void testTopLevelFunction() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelFunction.kt");
+        }
+
+        @Test
+        @TestMetadata("topLevelProperty.kt")
+        public void testTopLevelProperty() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelProperty.kt");
+        }
+
+        @Test
+        @TestMetadata("topLevelTypelTypeAlias.kt")
+        public void testTopLevelTypelTypeAlias() throws Exception {
+            runTest("idea/idea-frontend-fir/idea-fir-low-level-api/testdata/getOrBuildFir/wholeDeclaration/topLevelTypelTypeAlias.kt");
+        }
+    }
+}
diff --git a/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/test/base/ExpressionMarkersSourceFilePreprocessor.kt b/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/test/base/ExpressionMarkersSourceFilePreprocessor.kt
index 651065f39fb..7c5246f66ea 100644
--- a/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/test/base/ExpressionMarkersSourceFilePreprocessor.kt
+++ b/idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/test/base/ExpressionMarkersSourceFilePreprocessor.kt
@@ -6,6 +6,8 @@
 package org.jetbrains.kotlin.idea.fir.low.level.api.test.base
 
 import com.intellij.openapi.util.TextRange
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiWhiteSpace
 import org.jetbrains.kotlin.idea.fir.low.level.api.annotations.PrivateForInline
 import org.jetbrains.kotlin.idea.fir.low.level.api.util.parentOfType
 import org.jetbrains.kotlin.psi.KtElement
@@ -55,7 +57,9 @@ internal class ExpressionMarkersSourceFilePreprocessor(testServices: TestService
 
 class ExpressionMarkerProvider(testServices: TestServices) : TestService {
     private val selected = mutableMapOf<String, TextRange>()
-    @PrivateForInline val atCaret = mutableMapOf<String, Int>()
+
+    @PrivateForInline
+    val atCaret = mutableMapOf<String, Int>()
 
     fun addSelectedExpression(file: TestFile, range: TextRange) {
         selected[file.relativePath] = range
@@ -79,12 +83,16 @@ class ExpressionMarkerProvider(testServices: TestServices) : TestService {
     fun getSelectedElement(file: KtFile): KtElement {
         val range = selected[file.name]
             ?: error("No selected expression found in file")
-        val elements = file.elementsInRange(range)
+        val elements = file.elementsInRange(range).trimWhitespaces()
         if (elements.size != 1) {
-            error("Expected one element at rage but found ${elements.size} [${elements.joinToString { it.text }}]")
+            error("Expected one element at rage but found ${elements.size} [${elements.joinToString { it::class.simpleName + ": " + it.text }}]")
         }
         return elements.single() as KtElement
     }
+
+    private fun List<PsiElement>.trimWhitespaces(): List<PsiElement> =
+        dropWhile { it is PsiWhiteSpace }
+            .dropLastWhile { it is PsiWhiteSpace }
 }
 
 val TestServices.expressionMarkerProvider: ExpressionMarkerProvider by TestServices.testServiceAccessor()