Add tests for KT-26141 (yet without changes)

compiler/testData/diagnostics/tests/multiplatform/sealedTypeAlias.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +MultiPlatformProjects
+// MODULE: m1-common
+// FILE: common.kt
+
+expect sealed class Presence {
+    object Online: <!JVM:SEALED_SUPERTYPE!>Presence<!>
+    object Offline: <!JVM:SEALED_SUPERTYPE!>Presence<!>
+}
+
+// MODULE: m2-jvm(m1-common)
+// FILE: jvm.kt
+
+actual typealias Presence = P
+sealed class P {
+    object Online : P()
+    object Offline : P()
+}

compiler/testData/diagnostics/tests/multiplatform/sealedTypeAlias.txt

@@ -0,0 +1,46 @@
+// -- Module: <m1-common> --
+package
+
+public sealed expect class Presence {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public expect object Offline : Presence {
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public expect object Online : Presence {
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+
+// -- Module: <m2-jvm> --
+package
+
+public sealed class P {
+    private constructor P()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public object Offline : P {
+        private constructor Offline()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public object Online : P {
+        private constructor Online()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+public actual typealias Presence = P

compiler/testData/diagnostics/tests/multiplatform/sealedTypeAliasTopLevel.kt

@@ -0,0 +1,16 @@
+// !LANGUAGE: +MultiPlatformProjects
+// MODULE: m1-common
+// FILE: common.kt
+
+expect sealed class Presence
+expect object Online: Presence
+expect object Offline: Presence
+
+
+// MODULE: m2-jvm(m1-common)
+// FILE: jvm.kt
+
+actual typealias Presence = P
+sealed class P
+actual object Online : P()
+actual object Offline : P()

compiler/testData/diagnostics/tests/multiplatform/sealedTypeAliasTopLevel.txt

@@ -0,0 +1,46 @@
+// -- Module: <m1-common> --
+package
+
+public expect object Offline : Presence {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public expect object Online : Presence {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public sealed expect class Presence {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+
+// -- Module: <m2-jvm> --
+package
+
+public actual object Offline : P {
+    private constructor Offline()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public actual object Online : P {
+    private constructor Online()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public sealed class P {
+    private constructor P()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+public actual typealias Presence = P

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -12954,6 +12954,16 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 runTest("compiler/testData/diagnostics/tests/multiplatform/privateTopLevelDeclarations.kt");
             }
 
+            @TestMetadata("sealedTypeAlias.kt")
+            public void testSealedTypeAlias() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/multiplatform/sealedTypeAlias.kt");
+            }
+
+            @TestMetadata("sealedTypeAliasTopLevel.kt")
+            public void testSealedTypeAliasTopLevel() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/multiplatform/sealedTypeAliasTopLevel.kt");
+            }
+
             @TestMetadata("compiler/testData/diagnostics/tests/multiplatform/defaultArguments")
             @TestDataPath("$PROJECT_ROOT")
             @RunWith(JUnit3RunnerWithInners.class)

compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsUsingJavacTestGenerated.java

@@ -12954,6 +12954,16 @@ public class DiagnosticsUsingJavacTestGenerated extends AbstractDiagnosticsUsing
                 runTest("compiler/testData/diagnostics/tests/multiplatform/privateTopLevelDeclarations.kt");
             }
 
+            @TestMetadata("sealedTypeAlias.kt")
+            public void testSealedTypeAlias() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/multiplatform/sealedTypeAlias.kt");
+            }
+
+            @TestMetadata("sealedTypeAliasTopLevel.kt")
+            public void testSealedTypeAliasTopLevel() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/multiplatform/sealedTypeAliasTopLevel.kt");
+            }
+
             @TestMetadata("compiler/testData/diagnostics/tests/multiplatform/defaultArguments")
             @TestDataPath("$PROJECT_ROOT")
             @RunWith(JUnit3RunnerWithInners.class)

idea/testData/multiModuleHighlighting/multiplatform/sealedTypeAlias/common/common.kt

@@ -0,0 +1,6 @@
+package p
+
+expect sealed class Presence {
+    object Online: Presence
+    object Offline: Presence
+}

idea/testData/multiModuleHighlighting/multiplatform/sealedTypeAlias/jvm/jvm.kt

@@ -0,0 +1,8 @@
+// !CHECK_HIGHLIGHTING
+package p
+
+actual typealias Presence = P
+sealed class P {
+    object Online : P()
+    object Offline : P()
+}

idea/tests/org/jetbrains/kotlin/idea/caches/resolve/MultiPlatformHighlightingTestGenerated.java

@@ -124,6 +124,11 @@ public class MultiPlatformHighlightingTestGenerated extends AbstractMultiPlatfor
         runTest("idea/testData/multiModuleHighlighting/multiplatform/platformTypeAliasInterchangebleWithAliasedClass/");
     }
 
+    @TestMetadata("sealedTypeAlias")
+    public void testSealedTypeAlias() throws Exception {
+        runTest("idea/testData/multiModuleHighlighting/multiplatform/sealedTypeAlias/");
+    }
+
     @TestMetadata("suppressHeaderWithoutImpl")
     public void testSuppressHeaderWithoutImpl() throws Exception {
         runTest("idea/testData/multiModuleHighlighting/multiplatform/suppressHeaderWithoutImpl/");