KT-59732 [FIR] Add testdata to check incorrect imports with test compiler plugins

plugins/fir-plugin-prototype/testData/diagnostics/checkers/importsWithGeneratedDeclarations.fir.txt

@@ -0,0 +1,36 @@
+FILE: test_NestedClassAndMaterializeMember.kt
+    package test
+
+    @R|org/jetbrains/kotlin/fir/plugin/NestedClassAndMaterializeMember|() public final class MyClassWithNested : R|kotlin/Any| {
+        public constructor(): R|test/MyClassWithNested| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final fun materialize(): R|test/MyClassWithNested|
+
+        public final class Nested : R|kotlin/Any| {
+            public constructor(): R|test/MyClassWithNested.Nested| {
+                super<R|kotlin/Any|>()
+            }
+
+        }
+
+    }
+FILE: test_CompanionWithFoo.kt
+    package test
+
+    @R|org/jetbrains/kotlin/fir/plugin/CompanionWithFoo|() public final class MyClassWithCompanion : R|kotlin/Any| {
+        public constructor(): R|test/MyClassWithCompanion| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final companion object Companion : R|kotlin/Any| {
+            public final fun foo(): R|kotlin/Int|
+
+            private constructor(): R|test/MyClassWithCompanion.Companion| {
+                super<R|kotlin/Any|>()
+            }
+
+        }
+
+    }

plugins/fir-plugin-prototype/testData/diagnostics/checkers/importsWithGeneratedDeclarations.kt

@@ -0,0 +1,37 @@
+// FILE: test_NestedClassAndMaterializeMember.kt
+package test
+
+import org.jetbrains.kotlin.fir.plugin.NestedClassAndMaterializeMember
+
+import test.MyClassWithNested.*
+
+import test.MyClassWithNested.Nested
+import test.MyClassWithNested.Nested.*
+
+// does not exist
+import test.MyClassWithNested.<!UNRESOLVED_IMPORT!>FakeNested<!>
+import test.MyClassWithNested.<!UNRESOLVED_IMPORT!>FakeNested<!>.*
+
+// cannot import member
+import test.MyClassWithNested.<!CANNOT_BE_IMPORTED!>materialize<!>
+
+@NestedClassAndMaterializeMember
+class MyClassWithNested
+
+// FILE: test_CompanionWithFoo.kt
+package test
+
+import org.jetbrains.kotlin.fir.plugin.CompanionWithFoo
+
+import test.MyClassWithCompanion.*
+import test.MyClassWithCompanion.Companion
+import test.MyClassWithCompanion.Companion.foo
+
+// cannot star import from companion
+import test.MyClassWithCompanion.<!CANNOT_ALL_UNDER_IMPORT_FROM_SINGLETON!>Companion<!>.*
+
+@CompanionWithFoo
+class MyClassWithCompanion
+
+
+

plugins/fir-plugin-prototype/tests-gen/org/jetbrains/kotlin/fir/plugin/runners/FirPsiPluginDiagnosticTestGenerated.java

@@ -39,6 +39,12 @@ public class FirPsiPluginDiagnosticTestGenerated extends AbstractFirPsiPluginDia
             runTest("plugins/fir-plugin-prototype/testData/diagnostics/checkers/dependencyWithoutAttributePlugin.kt");
         }
 
+        @Test
+        @TestMetadata("importsWithGeneratedDeclarations.kt")
+        public void testImportsWithGeneratedDeclarations() throws Exception {
+            runTest("plugins/fir-plugin-prototype/testData/diagnostics/checkers/importsWithGeneratedDeclarations.kt");
+        }
+
         @Test
         @TestMetadata("mixingComposableAndNormalFunctions.kt")
         public void testMixingComposableAndNormalFunctions() throws Exception {