[Test] Add test for KT-54662

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -22590,6 +22590,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                 runTest("compiler/testData/diagnostics/tests/operatorsOverloading/assignmentOperationsCheckReturnType.kt");
             }
 
+            @Test
+            @TestMetadata("augmentedAssignForJavaSyntheticProperty.kt")
+            public void testAugmentedAssignForJavaSyntheticProperty() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/operatorsOverloading/augmentedAssignForJavaSyntheticProperty.kt");
+            }
+
             @Test
             @TestMetadata("compareToNullable.kt")
             public void testCompareToNullable() throws Exception {

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

@@ -22590,6 +22590,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
                 runTest("compiler/testData/diagnostics/tests/operatorsOverloading/assignmentOperationsCheckReturnType.kt");
             }
 
+            @Test
+            @TestMetadata("augmentedAssignForJavaSyntheticProperty.kt")
+            public void testAugmentedAssignForJavaSyntheticProperty() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/operatorsOverloading/augmentedAssignForJavaSyntheticProperty.kt");
+            }
+
             @Test
             @TestMetadata("compareToNullable.kt")
             public void testCompareToNullable() throws Exception {

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

@@ -22590,6 +22590,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
                 runTest("compiler/testData/diagnostics/tests/operatorsOverloading/assignmentOperationsCheckReturnType.kt");
             }
 
+            @Test
+            @TestMetadata("augmentedAssignForJavaSyntheticProperty.kt")
+            public void testAugmentedAssignForJavaSyntheticProperty() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/operatorsOverloading/augmentedAssignForJavaSyntheticProperty.kt");
+            }
+
             @Test
             @TestMetadata("compareToNullable.kt")
             public void testCompareToNullable() throws Exception {

compiler/testData/diagnostics/tests/operatorsOverloading/augmentedAssignForJavaSyntheticProperty.fir.kt

@@ -0,0 +1,20 @@
+// WITH_STDLIB
+// ISSUE: KT-54662
+
+// FILE: Base.java
+import java.util.Set;
+
+public class Base {
+    public Set<Object> getDependsOn() {
+        return null;
+    }
+
+    public void setDependsOn(Iterable<?> dependsOn) {}
+}
+
+// FILE: main.kt
+class Derived : Base() {
+    fun test(s: String) {
+        this.dependsOn <!ASSIGN_OPERATOR_AMBIGUITY!>+=<!> s
+    }
+}

compiler/testData/diagnostics/tests/operatorsOverloading/augmentedAssignForJavaSyntheticProperty.kt

@@ -0,0 +1,20 @@
+// WITH_STDLIB
+// ISSUE: KT-54662
+
+// FILE: Base.java
+import java.util.Set;
+
+public class Base {
+    public Set<Object> getDependsOn() {
+        return null;
+    }
+
+    public void setDependsOn(Iterable<?> dependsOn) {}
+}
+
+// FILE: main.kt
+class Derived : Base() {
+    fun test(s: String) {
+        this.dependsOn += s
+    }
+}

compiler/testData/diagnostics/tests/operatorsOverloading/augmentedAssignForJavaSyntheticProperty.txt

@@ -0,0 +1,20 @@
+package
+
+public open class Base {
+    public constructor Base()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun getDependsOn(): kotlin.collections.(Mutable)Set<kotlin.Any!>!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open fun setDependsOn(/*0*/ dependsOn: kotlin.collections.(Mutable)Iterable<*>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class Derived : Base {
+    public constructor Derived()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun getDependsOn(): kotlin.collections.(Mutable)Set<kotlin.Any!>!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun setDependsOn(/*0*/ dependsOn: kotlin.collections.(Mutable)Iterable<*>!): kotlin.Unit
+    public final fun test(/*0*/ s: kotlin.String): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

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

@@ -22596,6 +22596,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                 runTest("compiler/testData/diagnostics/tests/operatorsOverloading/assignmentOperationsCheckReturnType.kt");
             }
 
+            @Test
+            @TestMetadata("augmentedAssignForJavaSyntheticProperty.kt")
+            public void testAugmentedAssignForJavaSyntheticProperty() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/operatorsOverloading/augmentedAssignForJavaSyntheticProperty.kt");
+            }
+
             @Test
             @TestMetadata("compareToNullable.kt")
             public void testCompareToNullable() throws Exception {