[Tests] Add tests on smartcasts on static Java fields

Current behavior for different modules is undesired, will be fixed in
the next commit

^KT-58279

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -36933,6 +36933,18 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                     runTest("compiler/testData/diagnostics/tests/smartCasts/variables/reassignedInRhs.kt");
                 }
 
+                @Test
+                @TestMetadata("staticJavaFieldFromOtherModule.kt")
+                public void testStaticJavaFieldFromOtherModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromOtherModule.kt");
+                }
+
+                @Test
+                @TestMetadata("staticJavaFieldFromSameModule.kt")
+                public void testStaticJavaFieldFromSameModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromSameModule.kt");
+                }
+
                 @Test
                 @TestMetadata("varAsUse.kt")
                 public void testVarAsUse() throws Exception {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -36933,6 +36933,18 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                     runTest("compiler/testData/diagnostics/tests/smartCasts/variables/reassignedInRhs.kt");
                 }
 
+                @Test
+                @TestMetadata("staticJavaFieldFromOtherModule.kt")
+                public void testStaticJavaFieldFromOtherModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromOtherModule.kt");
+                }
+
+                @Test
+                @TestMetadata("staticJavaFieldFromSameModule.kt")
+                public void testStaticJavaFieldFromSameModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromSameModule.kt");
+                }
+
                 @Test
                 @TestMetadata("varAsUse.kt")
                 public void testVarAsUse() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeOldFrontendDiagnosticsTestGenerated.java

@@ -34577,6 +34577,18 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
                     runTest("compiler/testData/diagnostics/tests/smartCasts/variables/reassignedInRhs.kt");
                 }
 
+                @Test
+                @TestMetadata("staticJavaFieldFromOtherModule.kt")
+                public void testStaticJavaFieldFromOtherModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromOtherModule.kt");
+                }
+
+                @Test
+                @TestMetadata("staticJavaFieldFromSameModule.kt")
+                public void testStaticJavaFieldFromSameModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromSameModule.kt");
+                }
+
                 @Test
                 @TestMetadata("varAsUse.kt")
                 public void testVarAsUse() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiOldFrontendDiagnosticsTestGenerated.java

@@ -34703,6 +34703,18 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
                     runTest("compiler/testData/diagnostics/tests/smartCasts/variables/reassignedInRhs.kt");
                 }
 
+                @Test
+                @TestMetadata("staticJavaFieldFromOtherModule.kt")
+                public void testStaticJavaFieldFromOtherModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromOtherModule.kt");
+                }
+
+                @Test
+                @TestMetadata("staticJavaFieldFromSameModule.kt")
+                public void testStaticJavaFieldFromSameModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromSameModule.kt");
+                }
+
                 @Test
                 @TestMetadata("varAsUse.kt")
                 public void testVarAsUse() throws Exception {

compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromOtherModule.kt

@@ -0,0 +1,30 @@
+// FIR_IDENTICAL
+// SKIP_TXT
+
+// MODULE: lib
+// FILE: J.java
+public class J {
+    public static final Object staticFinalJava = "";
+    public static Object staticNonFinalJava = "";
+}
+
+// MODULE: app(lib)
+fun isCast() {
+    if (J.staticFinalJava is String) {
+        J.staticFinalJava.length
+        (J.staticFinalJava <!USELESS_CAST!>as String<!>).length
+    }
+
+    if (J.staticNonFinalJava is String) {
+        <!SMARTCAST_IMPOSSIBLE!>J.staticNonFinalJava<!>.length
+        (J.staticFinalJava as String).length
+    }
+}
+
+fun asCast() {
+    J.staticFinalJava as String
+    J.staticFinalJava.length
+
+    J.staticNonFinalJava as String
+    <!SMARTCAST_IMPOSSIBLE!>J.staticNonFinalJava<!>.length
+}

compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromSameModule.fir.kt

@@ -0,0 +1,28 @@
+// SKIP_TXT
+
+// FILE: J.java
+public class J {
+    public static final Object staticFinalJava = "";
+    public static Object staticNonFinalJava = "";
+}
+
+// FILE: Test.kt
+fun isCast() {
+    if (J.staticFinalJava is String) {
+        J.staticFinalJava.length
+        (J.staticFinalJava <!USELESS_CAST!>as String<!>).length
+    }
+
+    if (J.staticNonFinalJava is String) {
+        <!SMARTCAST_IMPOSSIBLE!>J.staticNonFinalJava<!>.length
+        (J.staticFinalJava as String).length
+    }
+}
+
+fun asCast() {
+    J.staticFinalJava as String
+    J.staticFinalJava.length
+
+    J.staticNonFinalJava as String
+    <!SMARTCAST_IMPOSSIBLE!>J.staticNonFinalJava<!>.length
+}

compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromSameModule.kt

@@ -0,0 +1,28 @@
+// SKIP_TXT
+
+// FILE: J.java
+public class J {
+    public static final Object staticFinalJava = "";
+    public static Object staticNonFinalJava = "";
+}
+
+// FILE: Test.kt
+fun isCast() {
+    if (J.staticFinalJava is String) {
+        <!DEBUG_INFO_SMARTCAST!>J.staticFinalJava<!>.length
+        (J.staticFinalJava <!USELESS_CAST!>as String<!>).length
+    }
+
+    if (J.staticNonFinalJava is String) {
+        <!SMARTCAST_IMPOSSIBLE!>J.staticNonFinalJava<!>.length
+        (J.staticFinalJava as String).length
+    }
+}
+
+fun asCast() {
+    J.staticFinalJava as String
+    <!DEBUG_INFO_SMARTCAST!>J.staticFinalJava<!>.length
+
+    J.staticNonFinalJava as String
+    <!SMARTCAST_IMPOSSIBLE!>J.staticNonFinalJava<!>.length
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -36933,6 +36933,18 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                     runTest("compiler/testData/diagnostics/tests/smartCasts/variables/reassignedInRhs.kt");
                 }
 
+                @Test
+                @TestMetadata("staticJavaFieldFromOtherModule.kt")
+                public void testStaticJavaFieldFromOtherModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromOtherModule.kt");
+                }
+
+                @Test
+                @TestMetadata("staticJavaFieldFromSameModule.kt")
+                public void testStaticJavaFieldFromSameModule() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/smartCasts/variables/staticJavaFieldFromSameModule.kt");
+                }
+
                 @Test
                 @TestMetadata("varAsUse.kt")
                 public void testVarAsUse() throws Exception {