Added test cases checking all decompiled files.

idea/testData/libraries/WithInnerAndObject.kt

@@ -0,0 +1,16 @@
+// IntelliJ API Decompiler stub source generated from a class file
+// Implementation of methods is not available
+
+package testData.libraries
+
+class WithInnerAndObject {
+    class object {
+        fun foo() : Unit { /* compiled code */ }
+    }
+
+    class MyInner {
+        trait MyInnerInner {
+            abstract fun innerInnerMethod() : Unit
+        }
+    }
+}