[kotlin] Added test

#KTIJ-21826 Fixed

GitOrigin-RevId: a1995292ab3d00919db91e19ab677bd832071556

plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/codeInsight/OutOfBlockModificationTestGenerated.java

@@ -468,6 +468,11 @@ public class OutOfBlockModificationTestGenerated extends AbstractOutOfBlockModif
         runTest("testData/codeInsight/outOfBlock/StringInSuperConstroctorCall.kt");
     }
 
+    @TestMetadata("Suppression.kt")
+    public void testSuppression() throws Exception {
+        runTest("testData/codeInsight/outOfBlock/Suppression.kt");
+    }
+
     @TestMetadata("Uncomment.kt")
     public void testUncomment() throws Exception {
         runTest("testData/codeInsight/outOfBlock/Uncomment.kt");

plugins/kotlin/idea/tests/testData/codeInsight/outOfBlock/Suppression.kt

@@ -0,0 +1,19 @@
+// WITH_STDLIB
+// OUT_OF_CODE_BLOCK: FALSE
+// SKIP_ANALYZE_CHECK
+// TYPE: '"'
+// INSPECTION-CLASS: org.jetbrains.kotlin.idea.inspections.KotlinRedundantDiagnosticSuppressInspection
+// NO-INSPECTION-OUTPUT
+// inspection message `[GENERIC_ERROR_OR_WARNING:8] Redundant suppression` should not appear, therefore `NO-INSPECTION-OUTPUT`
+fun convertToMap(converted: Map<*, *>): Map<String, Any>? {
+    @Suppress("UNCHECKED_CAST")
+    return converted as Map<String, Any>?
+}
+
+fun main() {
+    val s = "hello<caret>
+    when (s) {
+        "hello" -> println(s)
+        else -> {}
+    }
+}

plugins/kotlin/test-framework/test/org/jetbrains/kotlin/idea/test/DirectiveBasedActionUtils.kt

@@ -18,6 +18,7 @@ import org.jetbrains.kotlin.idea.inspections.AbstractKotlinInspection
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics
 import java.io.File
+import kotlin.test.assertTrue
 
 
 object DirectiveBasedActionUtils {
@@ -97,17 +98,23 @@ object DirectiveBasedActionUtils {
             /* progress = */ DaemonProgressIndicator(),
         )
 
-        val directive = "// INSPECTION:"
-        val expected = InTextDirectivesUtils.findLinesWithPrefixesRemoved(file.text, directive)
+        val directive = "INSPECTION"
+        val expected = InTextDirectivesUtils.findLinesWithPrefixesRemoved(file.text, "// $directive:")
             .sorted()
             .map { "$directive $it" }
 
+        val noInspectionOutputDirective = "NO-INSPECTION-OUTPUT"
+        val noInspectionOutput = InTextDirectivesUtils.isDirectiveDefined(file.text, "// $noInspectionOutputDirective")
+
         val actual = problems
             // lineNumber is 0-based
             .map { "$directive [${it.highlightType.name}:${it.lineNumber + 1}] $it" }
             .sorted()
 
-        if (actual.isEmpty() && expected.isEmpty()) return
+        if (actual.isEmpty() && expected.isEmpty()) {
+            assertTrue(noInspectionOutput, "`$noInspectionOutputDirective` directive has to be defined if there is nothing to report")
+            return
+        }
 
         KotlinLightCodeInsightFixtureTestCaseBase.assertOrderedEquals(
             "All actual $name should be mentioned in test data with '$directive' directive. " +