Add regression tests for modality changes

Motivation: the discovered false negative in test
changeModalityFromAbstractToOpenInOverride.kt

Unfortunately, it can't be fixed in K1, so we will just live with that.
Luckily, we report ABSTRACT_MEMBER_NOT_IMPLEMENTED additionally.

In K2, MODALITY_CHANGED_IN_NON_FINAL_EXPECT_CLASSIFIER_ACTUALIZATION
will be correctly reported as a compilation error

In scope of: KT-22841
Review: https://jetbrains.team/p/kt/reviews/11867/timeline

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

@@ -371,9 +371,27 @@ public class FirOldFrontendMPPDiagnosticsWithLightTreeTestGenerated extends Abst
         }
 
         @Test
-        @TestMetadata("changeModalityInOverride.kt")
-        public void testChangeModalityInOverride() throws Exception {
-            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityInOverride.kt");
+        @TestMetadata("changeModalityFromAbstractToFinalInOverride.kt")
+        public void testChangeModalityFromAbstractToFinalInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToFinalInOverride.kt");
+        }
+
+        @Test
+        @TestMetadata("changeModalityFromAbstractToOpenInOverride.kt")
+        public void testChangeModalityFromAbstractToOpenInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToOpenInOverride.kt");
+        }
+
+        @Test
+        @TestMetadata("changeModalityFromOpenToAbstractInOverride.kt")
+        public void testChangeModalityFromOpenToAbstractInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToAbstractInOverride.kt");
+        }
+
+        @Test
+        @TestMetadata("changeModalityFromOpenToFinalInOverride.kt")
+        public void testChangeModalityFromOpenToFinalInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToFinalInOverride.kt");
         }
 
         @Test

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

@@ -371,9 +371,27 @@ public class FirOldFrontendMPPDiagnosticsWithPsiTestGenerated extends AbstractFi
         }
 
         @Test
-        @TestMetadata("changeModalityInOverride.kt")
-        public void testChangeModalityInOverride() throws Exception {
-            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityInOverride.kt");
+        @TestMetadata("changeModalityFromAbstractToFinalInOverride.kt")
+        public void testChangeModalityFromAbstractToFinalInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToFinalInOverride.kt");
+        }
+
+        @Test
+        @TestMetadata("changeModalityFromAbstractToOpenInOverride.kt")
+        public void testChangeModalityFromAbstractToOpenInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToOpenInOverride.kt");
+        }
+
+        @Test
+        @TestMetadata("changeModalityFromOpenToAbstractInOverride.kt")
+        public void testChangeModalityFromOpenToAbstractInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToAbstractInOverride.kt");
+        }
+
+        @Test
+        @TestMetadata("changeModalityFromOpenToFinalInOverride.kt")
+        public void testChangeModalityFromOpenToFinalInOverride() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToFinalInOverride.kt");
         }
 
         @Test

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToFinalInOverride.fir.kt

@@ -0,0 +1,15 @@
+// MODULE: m1-common
+// FILE: common.kt
+
+interface Base {
+    <!INCOMPATIBLE_MATCHING{JVM}!>fun foo()<!>
+}
+
+<!INCOMPATIBLE_MATCHING{JVM}!>expect open <!ABSTRACT_MEMBER_NOT_IMPLEMENTED!>class Foo<!> : Base<!>
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+actual open class Foo : Base {
+    final override fun foo() {}
+}

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToFinalInOverride.kt

@@ -0,0 +1,15 @@
+// MODULE: m1-common
+// FILE: common.kt
+
+interface Base {
+    fun foo()
+}
+
+expect open <!ABSTRACT_MEMBER_NOT_IMPLEMENTED, ABSTRACT_MEMBER_NOT_IMPLEMENTED{JVM}!>class Foo<!> : Base
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+actual open <!ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER!>class Foo<!> : Base {
+    <!MODALITY_CHANGED_IN_NON_FINAL_EXPECT_CLASSIFIER_ACTUALIZATION!>final<!> override fun foo() {}
+}

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToOpenInOverride.fir.kt

@@ -0,0 +1,17 @@
+// MODULE: m1-common
+// FILE: common.kt
+interface Base {
+    <!INCOMPATIBLE_MATCHING{JVM}!>fun foo()<!>
+}
+<!INCOMPATIBLE_MATCHING{JVM}!>expect open <!ABSTRACT_MEMBER_NOT_IMPLEMENTED!>class Foo<!>() : Base<!>
+
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+// Mismatched scope must be reported here. But it's false negative checker in K1.
+// For some reason, K1 says that modality of `exect_Foo.foo` is `abstract`.
+// Luckily, we report ABSTRACT_MEMBER_NOT_IMPLEMENTED additionally.
+actual open class Foo : Base {
+    override fun foo() {}
+}

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToOpenInOverride.kt

@@ -0,0 +1,17 @@
+// MODULE: m1-common
+// FILE: common.kt
+interface Base {
+    fun foo()
+}
+expect open <!ABSTRACT_MEMBER_NOT_IMPLEMENTED, ABSTRACT_MEMBER_NOT_IMPLEMENTED{JVM}!>class Foo<!>() : Base
+
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+// Mismatched scope must be reported here. But it's false negative checker in K1.
+// For some reason, K1 says that modality of `exect_Foo.foo` is `abstract`.
+// Luckily, we report ABSTRACT_MEMBER_NOT_IMPLEMENTED additionally.
+actual open class Foo : Base {
+    override fun foo() {}
+}

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToAbstractInOverride.fir.kt

@@ -0,0 +1,14 @@
+// MODULE: m1-common
+// FILE: common.kt
+interface Base {
+    <!INCOMPATIBLE_MATCHING{JVM}!>fun foo() {}<!>
+}
+<!INCOMPATIBLE_MATCHING{JVM}!>expect abstract class Foo() : Base<!>
+
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+actual abstract class Foo : Base {
+    abstract override fun foo()
+}

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToAbstractInOverride.kt

@@ -0,0 +1,14 @@
+// MODULE: m1-common
+// FILE: common.kt
+interface Base {
+    fun foo() {}
+}
+expect abstract class Foo() : Base
+
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+actual abstract <!ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER!>class Foo<!> : Base {
+    <!MODALITY_CHANGED_IN_NON_FINAL_EXPECT_CLASSIFIER_ACTUALIZATION!>abstract<!> override fun foo()
+}

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

@@ -23240,9 +23240,27 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                 }
 
                 @Test
-                @TestMetadata("changeModalityInOverride.kt")
-                public void testChangeModalityInOverride() throws Exception {
-                    runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityInOverride.kt");
+                @TestMetadata("changeModalityFromAbstractToFinalInOverride.kt")
+                public void testChangeModalityFromAbstractToFinalInOverride() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToFinalInOverride.kt");
+                }
+
+                @Test
+                @TestMetadata("changeModalityFromAbstractToOpenInOverride.kt")
+                public void testChangeModalityFromAbstractToOpenInOverride() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromAbstractToOpenInOverride.kt");
+                }
+
+                @Test
+                @TestMetadata("changeModalityFromOpenToAbstractInOverride.kt")
+                public void testChangeModalityFromOpenToAbstractInOverride() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToAbstractInOverride.kt");
+                }
+
+                @Test
+                @TestMetadata("changeModalityFromOpenToFinalInOverride.kt")
+                public void testChangeModalityFromOpenToFinalInOverride() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeModalityFromOpenToFinalInOverride.kt");
                 }
 
                 @Test