feat(test_lib): change test_lib.dart to structurally compare objects

modules/test_lib/test/test_lib_spec.js

@@ -0,0 +1,22 @@
+import {describe, it, iit, expect} from 'test_lib/test_lib';
+
+class TestObj {
+  constructor(prop) {
+    this.prop = prop;
+  }
+}
+
+export function main() {
+  describe("test_lib", function () {
+    describe("equality", function () {
+      it("should structurally compare objects", function () {
+        var expected = new TestObj(new TestObj({"one" : [1,2]}));
+        var actual = new TestObj(new TestObj({"one" : [1,2]}));
+        var falseActual = new TestObj(new TestObj({"one" : [1,3]}));
+
+        expect(actual).toEqual(expected);
+        expect(falseActual).not.toEqual(expected);
+      });
+    });
+  });
+}