fix(test_lib): support comparing Maps in nested structures

modules/test_lib/test/test_lib_spec.js

@@ -26,9 +26,14 @@ export function main() {
         expect(falseActual).not.toEqual(expected);
       });
 
-      it('should work for arrays of maps', () => {
+      it('should work for arrays of string maps', () => {
         expect([{'a':'b'}]).toEqual([{'a':'b'}]);
       });
+
+      it('should work for arrays of real maps', () => {
+        expect([MapWrapper.createFromStringMap({'a':'b'})]).toEqual([MapWrapper.createFromStringMap({'a':'b'})]);
+        expect([MapWrapper.createFromStringMap({'a':'b'})]).not.toEqual([MapWrapper.createFromStringMap({'a':'c'})]);
+      });
     });
 
     describe('toEqual for Maps', () => {