K1/K2: add test confirming the work of KT-54487 case

#KT-54487 Obsolete
#KT-63350 Declined

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

@@ -20144,6 +20144,12 @@ public class LLFirBlackBoxCodegenBasedTestGenerated extends AbstractLLFirBlackBo
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @Test
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @Test
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {

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

@@ -20144,6 +20144,12 @@ public class LLFirReversedBlackBoxCodegenBasedTestGenerated extends AbstractLLFi
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @Test
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @Test
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java

@@ -19819,6 +19819,12 @@ public class FirLightTreeBlackBoxCodegenTestGenerated extends AbstractFirLightTr
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @Test
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @Test
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated.java

@@ -19819,6 +19819,12 @@ public class FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @Test
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @Test
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java

@@ -19819,6 +19819,12 @@ public class FirPsiBlackBoxCodegenTestGenerated extends AbstractFirPsiBlackBoxCo
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @Test
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @Test
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {

compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt

@@ -0,0 +1,47 @@
+// TARGET_BACKEND: JVM_IR
+// ISSUE: KT-54487, KT-63350
+// FILE: p/I.java
+
+package p;
+
+public interface I {
+    String foo();
+}
+
+// FILE: p/I2.java
+
+package p;
+
+public interface I2 extends I {}
+
+// FILE: p/C.java
+
+package p;
+
+public class C {
+    static class Impl implements I {
+        public String foo() {
+            return "OK";
+        }
+    }
+
+    static class C1Base extends Impl {}
+    static class C2Base extends Impl {}
+
+    public static class C1 extends C1Base implements I2 {}
+    public static class C2 extends C2Base implements I2 {}
+
+    public static final C1 c1 = new C1();
+    public static final C2 c2 = new C2();
+}
+
+// FILE: test.kt
+
+import p.C
+
+fun <T> union(a: T, b: T) = a
+
+fun box() =
+// receiver type = I2 & C.Impl
+// method resolved to C.Impl.foo, but in backend IR the resulting call is I2.foo
+    union(C.c1, C.c2).foo()

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

@@ -19819,6 +19819,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @Test
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @Test
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {

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

@@ -19819,6 +19819,12 @@ public class IrBlackBoxCodegenWithIrInlinerTestGenerated extends AbstractIrBlack
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @Test
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @Test
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {

compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -16537,6 +16537,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/fir/notFoundClasses.kt");
         }
 
+        @TestMetadata("publicMethodCallViaPackagePrivateCommon.kt")
+        public void testPublicMethodCallViaPackagePrivateCommon() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/publicMethodCallViaPackagePrivateCommon.kt");
+        }
+
         @TestMetadata("SamWithReceiverMavenProjectImportHandler.kt")
         public void testSamWithReceiverMavenProjectImportHandler() throws Exception {
             runTest("compiler/testData/codegen/box/fir/SamWithReceiverMavenProjectImportHandler.kt");