IDEA-153614 (Flip ',' (comma) generates invalid code)

java/java-tests/testData/codeInsight/flipComma/afterMultiVar.java

@@ -0,0 +1,5 @@
+// "Flip ','" "true"
+class MultiVar {
+
+  private int b,<caret> a;
+}

java/java-tests/testData/codeInsight/flipComma/beforeMultiVar.java

@@ -0,0 +1,8 @@
+// "Flip ','" "true"
+
+class MultiVar {
+
+  void m() {
+    int a,<caret> b;
+  }
+}

java/java-tests/testSrc/com/intellij/codeInsight/intention/FlipCommaIntentionTest.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.intellij.codeInsight.intention;
+
+import com.siyeh.ipp.IPPTestCase;
+
+/**
+ * @author Bas Leijdekkers
+ */
+public class FlipCommaIntentionTest extends IPPTestCase {
+
+  public void test() throws Exception {
+    doTest("class C {\n" +
+           "    int a,/*_Flip ','*/ b;" +
+           "}",
+           "class C {\n" +
+           "    int b, a;\n" +
+           "}");
+  }
+}