Issue #12331: Test case added for FinalLocalVariableCheck to kill mut…

config/pitest-suppressions/pitest-coding-2-suppressions.xml

@@ -72,15 +72,6 @@
     <lineContent>prevScopeUninitializedVariables.pop();</lineContent>
   </mutation>
 
-  <mutation unstable="false">
-    <sourceFile>FinalLocalVariableCheck.java</sourceFile>
-    <mutatedClass>com.puppycrawl.tools.checkstyle.checks.coding.FinalLocalVariableCheck</mutatedClass>
-    <mutatedMethod>leaveToken</mutatedMethod>
-    <mutator>org.pitest.mutationtest.engine.gregor.mutators.experimental.RemoveSwitchMutator_2</mutator>
-    <description>RemoveSwitch 2 (case value 8)</description>
-    <lineContent>switch (ast.getType()) {</lineContent>
-  </mutation>
-
   <mutation unstable="false">
     <sourceFile>FinalLocalVariableCheck.java</sourceFile>
     <mutatedClass>com.puppycrawl.tools.checkstyle.checks.coding.FinalLocalVariableCheck</mutatedClass>

src/test/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheckTest.java

@@ -307,4 +307,17 @@ public void testFinalLocalVariableSwitchStatement() throws Exception {
             expected);
     }
 
+    @Test
+    public void testConstructor() throws Exception {
+        final String[] expected = {
+            "14:44: " + getCheckMessage(MSG_KEY, "a"),
+            "18:44: " + getCheckMessage(MSG_KEY, "a"),
+            "19:43: " + getCheckMessage(MSG_KEY, "b"),
+            "22:47: " + getCheckMessage(MSG_KEY, "str"),
+            "35:21: " + getCheckMessage(MSG_KEY, "str"),
+        };
+        verifyWithInlineConfigParser(
+            getPath("InputFinalLocalVariableConstructor.java"),
+            expected);
+    }
 }

src/test/resources/com/puppycrawl/tools/checkstyle/checks/coding/finallocalvariable/InputFinalLocalVariableConstructor.java

@@ -0,0 +1,38 @@
+/*
+FinalLocalVariable
+validateEnhancedForLoopVariable = (default)false
+tokens = PARAMETER_DEF
+
+
+*/
+
+
+package com.puppycrawl.tools.checkstyle.checks.coding.finallocalvariable;
+
+public class InputFinalLocalVariableConstructor {
+
+    InputFinalLocalVariableConstructor(int a) {
+        // violation above 'Variable 'a' should be declared final'
+    }
+
+    InputFinalLocalVariableConstructor(int a, // violation 'Variable 'a' should be declared final'
+                                      int b) { // violation 'Variable 'b' should be declared final'
+    }
+
+    InputFinalLocalVariableConstructor(String str) {
+        // violation above 'Variable 'str' should be declared final'
+    }
+}
+
+class Mutation {
+
+    Mutation(final int a) { // ok
+    }
+
+    Mutation(final String check) { // ok
+    }
+
+    Mutation(String str, final int b) {
+        // violation above 'Variable 'str' should be declared final'
+    }
+}