[Test] Add additional test for KT-21463

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

@@ -13750,6 +13750,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                 runTest("compiler/testData/diagnostics/tests/generics/anonymousObjectSupertypeWithTypeParameterFromFunction.kt");
             }
 
+            @Test
+            @TestMetadata("approximationOfBoundedProjection.kt")
+            public void testApproximationOfBoundedProjection() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/generics/approximationOfBoundedProjection.kt");
+            }
+
             @Test
             @TestMetadata("approximationOfInProjection.kt")
             public void testApproximationOfInProjection() throws Exception {

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

@@ -13750,6 +13750,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                 runTest("compiler/testData/diagnostics/tests/generics/anonymousObjectSupertypeWithTypeParameterFromFunction.kt");
             }
 
+            @Test
+            @TestMetadata("approximationOfBoundedProjection.kt")
+            public void testApproximationOfBoundedProjection() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/generics/approximationOfBoundedProjection.kt");
+            }
+
             @Test
             @TestMetadata("approximationOfInProjection.kt")
             public void testApproximationOfInProjection() throws Exception {

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

@@ -13744,6 +13744,12 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
                 runTest("compiler/testData/diagnostics/tests/generics/anonymousObjectSupertypeWithTypeParameterFromFunction.kt");
             }
 
+            @Test
+            @TestMetadata("approximationOfBoundedProjection.kt")
+            public void testApproximationOfBoundedProjection() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/generics/approximationOfBoundedProjection.kt");
+            }
+
             @Test
             @TestMetadata("approximationOfInProjection.kt")
             public void testApproximationOfInProjection() throws Exception {

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

@@ -13750,6 +13750,12 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
                 runTest("compiler/testData/diagnostics/tests/generics/anonymousObjectSupertypeWithTypeParameterFromFunction.kt");
             }
 
+            @Test
+            @TestMetadata("approximationOfBoundedProjection.kt")
+            public void testApproximationOfBoundedProjection() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/generics/approximationOfBoundedProjection.kt");
+            }
+
             @Test
             @TestMetadata("approximationOfInProjection.kt")
             public void testApproximationOfInProjection() throws Exception {

compiler/testData/diagnostics/tests/generics/approximationOfBoundedProjection.fir.kt

@@ -0,0 +1,15 @@
+// ISSUE: KT-21463
+
+interface BoxWrapper<T, B : Box<T>> {
+    val box: B
+}
+
+interface Box<T> {
+    val item: T
+}
+
+fun <T> getBoxWrapper(): BoxWrapper<T, *> = null!!
+
+class Element
+
+val box: Box<Element> = getBoxWrapper<Element>().box

compiler/testData/diagnostics/tests/generics/approximationOfBoundedProjection.kt

@@ -0,0 +1,15 @@
+// ISSUE: KT-21463
+
+interface BoxWrapper<T, B : Box<T>> {
+    val box: B
+}
+
+interface Box<T> {
+    val item: T
+}
+
+fun <T> getBoxWrapper(): BoxWrapper<T, *> = null!!
+
+class Element
+
+val box: Box<Element> = <!TYPE_MISMATCH!>getBoxWrapper<Element>().box<!>

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

@@ -13750,6 +13750,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                 runTest("compiler/testData/diagnostics/tests/generics/anonymousObjectSupertypeWithTypeParameterFromFunction.kt");
             }
 
+            @Test
+            @TestMetadata("approximationOfBoundedProjection.kt")
+            public void testApproximationOfBoundedProjection() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/generics/approximationOfBoundedProjection.kt");
+            }
+
             @Test
             @TestMetadata("approximationOfInProjection.kt")
             public void testApproximationOfInProjection() throws Exception {