New J2K: add ReplaceGuardClause inspection to post-processing

#KT-22412 Fixed

nj2k/nj2k-services/src/org/jetbrains/kotlin/nj2k/postProcessing/J2kPostProcessor.kt

@@ -221,7 +221,8 @@ private val inspectionLikePostProcessingGroup =
         intentionBasedProcessing(RemoveEmptyPrimaryConstructorIntention()),
         generalInspectionBasedProcessing(MayBeConstantInspection()),
         RemoveForExpressionLoopParameterTypeProcessing(),
-        intentionBasedProcessing(ReplaceMapGetOrDefaultIntention())
+        intentionBasedProcessing(ReplaceMapGetOrDefaultIntention()),
+        inspectionBasedProcessing(ReplaceGuardClauseWithFunctionCallInspection())
     )
 
 

nj2k/testData/newJ2k/postProcessing/GuardClause.java

@@ -0,0 +1,7 @@
+public class Test {
+    void test(String s) {
+        if (s == null) {
+            throw new IllegalArgumentException("s should not be null");
+        }
+    }
+}

nj2k/testData/newJ2k/postProcessing/GuardClause.kt

@@ -0,0 +1,5 @@
+class Test {
+    internal fun test(s: String?) {
+        requireNotNull(s) { "s should not be null" }
+    }
+}

nj2k/tests/org/jetbrains/kotlin/nj2k/NewJavaToKotlinConverterSingleFileTestGenerated.java

@@ -4082,6 +4082,11 @@ public class NewJavaToKotlinConverterSingleFileTestGenerated extends AbstractNew
             runTest("nj2k/testData/newJ2k/postProcessing/GetOperator.java");
         }
 
+        @TestMetadata("GuardClause.java")
+        public void testGuardClause() throws Exception {
+            runTest("nj2k/testData/newJ2k/postProcessing/GuardClause.java");
+        }
+
         @TestMetadata("IfNullReturnToElvis.java")
         public void testIfNullReturnToElvis() throws Exception {
             runTest("nj2k/testData/newJ2k/postProcessing/IfNullReturnToElvis.java");