[java decompiler] excludes false inner classes

test/org/jetbrains/java/decompiler/SingleClassesTest.java

@@ -111,6 +111,8 @@ public class SingleClassesTest {
   //@Test public void testInUse() { doTest("pkg/TestInUse"); }
   //@Test public void testInterfaceSuper() { doTest("pkg/TestInterfaceSuper"); }
 
+  @Test public void testGroovyTrait() { doTest("pkg/TestGroovyTrait"); }
+
   private void doTest(String testFile, String... companionFiles) {
     ConsoleDecompiler decompiler = fixture.getDecompiler();