do not need parenthesis for associative operations (IDEADEV-41569); move to java-tests

java/java-tests/testData/refactoring/introduceVariable/InsideFor.after.java

@@ -0,0 +1,8 @@
+class Test {
+    public void method() {
+        for(int i = 0; i < 100; i++) {
+            int temp = i * 2;
+            sum += temp;
+        }
+    }
+}