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

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

@@ -0,0 +1,13 @@
+import java.util.*;
+
+public class Introduce {
+    private static List _list = new ArrayList();
+
+    public static void main(String[] args) {
+        final boolean invisible = (!<selection>_list.isEmpty()</selection>);
+        final boolean visible = (_list.isEmpty());
+
+        if("".equals(_list.get(0)) || _list.isEmpty()) {
+        }
+    }
+}