K1/K2: add a test confirming current behavior of KT-57014 case

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

@@ -33598,6 +33598,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
         runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGeneric.kt");
       }
 
+      @Test
+      @TestMetadata("samConversionToGenericWrongNullability.kt")
+      public void testSamConversionToGenericWrongNullability() {
+        runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGenericWrongNullability.kt");
+      }
+
       @Test
       @TestMetadata("samConversionWithCondition.kt")
       public void testSamConversionWithCondition() {

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

@@ -33598,6 +33598,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
         runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGeneric.kt");
       }
 
+      @Test
+      @TestMetadata("samConversionToGenericWrongNullability.kt")
+      public void testSamConversionToGenericWrongNullability() {
+        runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGenericWrongNullability.kt");
+      }
+
       @Test
       @TestMetadata("samConversionWithCondition.kt")
       public void testSamConversionWithCondition() {

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

@@ -31296,6 +31296,12 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
         runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGeneric.kt");
       }
 
+      @Test
+      @TestMetadata("samConversionToGenericWrongNullability.kt")
+      public void testSamConversionToGenericWrongNullability() {
+        runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGenericWrongNullability.kt");
+      }
+
       @Test
       @TestMetadata("samConversionWithCondition.kt")
       public void testSamConversionWithCondition() {

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

@@ -31308,6 +31308,12 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
         runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGeneric.kt");
       }
 
+      @Test
+      @TestMetadata("samConversionToGenericWrongNullability.kt")
+      public void testSamConversionToGenericWrongNullability() {
+        runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGenericWrongNullability.kt");
+      }
+
       @Test
       @TestMetadata("samConversionWithCondition.kt")
       public void testSamConversionWithCondition() {

compiler/testData/diagnostics/tests/samConversions/samConversionToGenericWrongNullability.fir.kt

@@ -0,0 +1,13 @@
+// ISSUE: KT-57014
+// FULL_JDK
+// JVM_TARGET: 1.8
+
+import java.util.function.Supplier
+
+fun main() {
+    val sam = Supplier<String> {
+        <!ARGUMENT_TYPE_MISMATCH!>foo()<!>
+    }
+}
+
+fun foo(): String? = null

compiler/testData/diagnostics/tests/samConversions/samConversionToGenericWrongNullability.kt

@@ -0,0 +1,13 @@
+// ISSUE: KT-57014
+// FULL_JDK
+// JVM_TARGET: 1.8
+
+import java.util.function.Supplier
+
+fun main() {
+    val sam = Supplier<String> {
+        foo()
+    }
+}
+
+fun foo(): String? = null

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

@@ -33598,6 +33598,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
         runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGeneric.kt");
       }
 
+      @Test
+      @TestMetadata("samConversionToGenericWrongNullability.kt")
+      public void testSamConversionToGenericWrongNullability() {
+        runTest("compiler/testData/diagnostics/tests/samConversions/samConversionToGenericWrongNullability.kt");
+      }
+
       @Test
       @TestMetadata("samConversionWithCondition.kt")
       public void testSamConversionWithCondition() {