[MPP] Add test for inc/dec check in expect class

KT-49714

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -339,6 +339,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
+        @Test
+        @TestMetadata("IncDecOperatorsInExpectClass.kt")
+        public void testIncDecOperatorsInExpectClass() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
+        }
+
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {

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

@@ -339,6 +339,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
+        @Test
+        @TestMetadata("IncDecOperatorsInExpectClass.kt")
+        public void testIncDecOperatorsInExpectClass() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
+        }
+
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {

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

@@ -339,6 +339,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
+        @Test
+        @TestMetadata("IncDecOperatorsInExpectClass.kt")
+        public void testIncDecOperatorsInExpectClass() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
+        }
+
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {

compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.fir.kt

@@ -0,0 +1,10 @@
+// !LANGUAGE: +MultiPlatformProjects
+// SKIP_TXT
+// Issue: KT-49714
+
+expect class Counter {
+    operator fun inc(): Counter
+    operator fun dec(): Counter
+}
+
+actual typealias Counter = Int

compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt

@@ -0,0 +1,10 @@
+// !LANGUAGE: +MultiPlatformProjects
+// SKIP_TXT
+// Issue: KT-49714
+
+expect class Counter {
+    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun inc(): Counter
+    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun dec(): Counter
+}
+
+actual typealias Counter = Int

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

@@ -339,6 +339,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
             runTest("compiler/testData/diagnostics/tests/IncDec.kt");
         }
 
+        @Test
+        @TestMetadata("IncDecOperatorsInExpectClass.kt")
+        public void testIncDecOperatorsInExpectClass() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/IncDecOperatorsInExpectClass.kt");
+        }
+
         @Test
         @TestMetadata("IncorrectCharacterLiterals.kt")
         public void testIncorrectCharacterLiterals() throws Exception {