Minor, add regression test for K2 delegation issue

#KT-62120

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

@@ -16214,6 +16214,12 @@ public class LLFirBlackBoxCodegenBasedTestGenerated extends AbstractLLFirBlackBo
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

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

@@ -16214,6 +16214,12 @@ public class LLFirReversedBlackBoxCodegenBasedTestGenerated extends AbstractLLFi
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

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

@@ -16155,6 +16155,12 @@ public class FirLightTreeBlackBoxCodegenTestGenerated extends AbstractFirLightTr
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

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

@@ -16155,6 +16155,12 @@ public class FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

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

@@ -16155,6 +16155,12 @@ public class FirPsiBlackBoxCodegenTestGenerated extends AbstractFirPsiBlackBoxCo
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

compiler/testData/codegen/box/delegation/computeIfAbsent.kt

@@ -0,0 +1,10 @@
+// TARGET_BACKEND: JVM
+// WITH_STDLIB
+// FULL_JDK
+
+class MyMap : MutableMap<Int, String> by hashMapOf()
+
+fun box(): String {
+    val map = MyMap()
+    return map.computeIfAbsent(42) { "OK" }
+}

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

@@ -15783,6 +15783,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

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

@@ -16155,6 +16155,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

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

@@ -16155,6 +16155,12 @@ public class IrBlackBoxCodegenWithIrInlinerTestGenerated extends AbstractIrBlack
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @Test
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @Test
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {

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

@@ -13310,6 +13310,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/delegation/byMiddleInterface.kt");
         }
 
+        @TestMetadata("computeIfAbsent.kt")
+        public void testComputeIfAbsent() throws Exception {
+            runTest("compiler/testData/codegen/box/delegation/computeIfAbsent.kt");
+        }
+
         @TestMetadata("defaultOverride.kt")
         public void testDefaultOverride() throws Exception {
             runTest("compiler/testData/codegen/box/delegation/defaultOverride.kt");