IDEA-196805 Warn about switch statement with single 'default'

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/switchDefault/beforeBreakInIf.java

@@ -0,0 +1,13 @@
+// "Unwrap 'switch' statement" "true"
+class X {
+  String test(char c) {
+    s<caret>witch (c) {
+      default:
+        if(c == 'a') {
+          System.out.println("foo");
+          break;
+        } else break;
+    }
+    System.out.println("oops");
+  }
+}