EquivalenceChecker: flexible modifier list comparison; fixes in class comparison; test (IDEA-CR-38140)

java/java-tests/testData/inspection/commonIfParts/afterAnonymous.java

@@ -0,0 +1,18 @@
+// "Collapse if statement " "true"
+
+import java.util.List;
+import java.util.Map;
+
+public class Main {
+
+  void test(int x) {
+      Runnable r = new Runnable() {
+        private final boolean field = x > 1;
+
+        @Override
+        public void run() {
+          System.out.println((x));
+        }
+      };
+  }
+}

java/java-tests/testData/inspection/commonIfParts/beforeAnonymous.java

@@ -0,0 +1,29 @@
+// "Collapse if statement " "true"
+
+import java.util.List;
+import java.util.Map;
+
+public class Main {
+
+  void test(int x) {
+    if<caret>(x > 0) {
+      Runnable r = new Runnable() {
+        private final boolean field = x > 1;
+
+        @Override
+        public void run() {
+          System.out.println((x));
+        }
+      };
+    } else {
+      Runnable r = new Runnable() {
+        final private boolean field = 1 < x;
+
+        @Override
+        public void run() {
+          System.out.println(x);
+        }
+      };
+    }
+  }
+}