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

java/java-tests/testData/refactoring/introduceVariable/AnonymousClass.java

@@ -0,0 +1,10 @@
+class Test {
+    public void method() {
+        1 + 2 <caret>
+        Runnable r = new Runnable() {
+            public void run() {
+                int i = 1 + 2;
+            }
+        };
+    }
+}