1 files changed, 164 insertions, 0 deletions
diff --git a/toolkit/modules/tests/xpcshell/test_ObjectUtils.js b/toolkit/modules/tests/xpcshell/test_ObjectUtils.js
new file mode 100644
index 0000000000..ce40a87007
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_ObjectUtils.js
@@ -0,0 +1,164 @@
+const { ObjectUtils } = ChromeUtils.import(
+  "resource://gre/modules/ObjectUtils.jsm"
+);
+
+add_task(async function test_deepEqual() {
+  let deepEqual = ObjectUtils.deepEqual.bind(ObjectUtils);
+  // CommonJS 7.2
+  Assert.ok(
+    deepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14)),
+    "deepEqual date"
+  );
+  Assert.ok(deepEqual(new Date(NaN), new Date(NaN)), "deepEqual invalid dates");
+
+  Assert.ok(!deepEqual(new Date(), new Date(2000, 3, 14)), "deepEqual date");
+
+  let now = Date.now();
+  Assert.ok(
+    !deepEqual(new Date(now), now),
+    "Dates and times should not be equal"
+  );
+  Assert.ok(
+    !deepEqual(now, new Date(now)),
+    "Times and dates should not be equal"
+  );
+
+  Assert.ok(!deepEqual("", {}), "Objects and primitives should not be equal");
+  Assert.ok(!deepEqual(/a/, "a"), "RegExps and strings should not be equal");
+  Assert.ok(!deepEqual("a", /a/), "Strings and RegExps should not be equal");
+
+  // 7.3
+  Assert.ok(deepEqual(/a/, /a/));
+  Assert.ok(deepEqual(/a/g, /a/g));
+  Assert.ok(deepEqual(/a/i, /a/i));
+  Assert.ok(deepEqual(/a/m, /a/m));
+  Assert.ok(deepEqual(/a/gim, /a/gim));
+  Assert.ok(!deepEqual(/ab/, /a/));
+  Assert.ok(!deepEqual(/a/g, /a/));
+  Assert.ok(!deepEqual(/a/i, /a/));
+  Assert.ok(!deepEqual(/a/m, /a/));
+  Assert.ok(!deepEqual(/a/gim, /a/im));
+
+  let re1 = /a/;
+  re1.lastIndex = 3;
+  Assert.ok(!deepEqual(re1, /a/));
+
+  // 7.4
+  Assert.ok(deepEqual(4, "4"), "deepEqual == check");
+  Assert.ok(deepEqual(true, 1), "deepEqual == check");
+  Assert.ok(!deepEqual(4, "5"), "deepEqual == check");
+
+  // 7.5
+  // having the same number of owned properties && the same set of keys
+  Assert.ok(deepEqual({ a: 4 }, { a: 4 }));
+  Assert.ok(deepEqual({ a: 4, b: "2" }, { a: 4, b: "2" }));
+  Assert.ok(deepEqual([4], ["4"]));
+  Assert.ok(!deepEqual({ a: 4 }, { a: 4, b: true }));
+  Assert.ok(deepEqual(["a"], { 0: "a" }));
+
+  let a1 = [1, 2, 3];
+  let a2 = [1, 2, 3];
+  a1.a = "test";
+  a1.b = true;
+  a2.b = true;
+  a2.a = "test";
+  Assert.ok(!deepEqual(Object.keys(a1), Object.keys(a2)));
+  Assert.ok(deepEqual(a1, a2));
+
+  let nbRoot = {
+    toString() {
+      return this.first + " " + this.last;
+    },
+  };
+
+  function nameBuilder(first, last) {
+    this.first = first;
+    this.last = last;
+    return this;
+  }
+  nameBuilder.prototype = nbRoot;
+
+  function nameBuilder2(first, last) {
+    this.first = first;
+    this.last = last;
+    return this;
+  }
+  nameBuilder2.prototype = nbRoot;
+
+  let nb1 = new nameBuilder("Ryan", "Dahl");
+  let nb2 = new nameBuilder2("Ryan", "Dahl");
+
+  Assert.ok(deepEqual(nb1, nb2));
+
+  nameBuilder2.prototype = Object;
+  nb2 = new nameBuilder2("Ryan", "Dahl");
+  Assert.ok(!deepEqual(nb1, nb2));
+
+  // String literal + object
+  Assert.ok(!deepEqual("a", {}));
+
+  // Make sure deepEqual doesn't loop forever on circular refs
+
+  let b = {};
+  b.b = b;
+
+  let c = {};
+  c.b = c;
+
+  try {
+    Assert.ok(!deepEqual(b, c));
+  } catch (e) {
+    Assert.ok(true, "Didn't recurse infinitely.");
+  }
+
+  let e = { a: 3, b: 4 };
+  let f = { b: 4, a: 3 };
+
+  function checkEquiv() {
+    return arguments;
+  }
+
+  Assert.ok(deepEqual(checkEquiv(e, f), checkEquiv(f, e)));
+});
+
+add_task(async function test_isEmpty() {
+  Assert.ok(ObjectUtils.isEmpty(""), "Empty strings should be empty");
+  Assert.ok(ObjectUtils.isEmpty(0), "0 should be empty");
+  Assert.ok(ObjectUtils.isEmpty(NaN), "NaN should be empty");
+  Assert.ok(ObjectUtils.isEmpty(), "Undefined should be empty");
+  Assert.ok(ObjectUtils.isEmpty(null), "Null should be empty");
+  Assert.ok(ObjectUtils.isEmpty(false), "False should be empty");
+
+  Assert.ok(
+    ObjectUtils.isEmpty({}),
+    "Objects without properties should be empty"
+  );
+  Assert.ok(
+    ObjectUtils.isEmpty(
+      Object.defineProperty({}, "a", {
+        value: 1,
+        enumerable: false,
+        configurable: true,
+        writable: true,
+      })
+    ),
+    "Objects without enumerable properties should be empty"
+  );
+  Assert.ok(ObjectUtils.isEmpty([]), "Arrays without elements should be empty");
+
+  Assert.ok(
+    !ObjectUtils.isEmpty([1]),
+    "Arrays with elements should not be empty"
+  );
+  Assert.ok(
+    !ObjectUtils.isEmpty({ a: 1 }),
+    "Objects with properties should not be empty"
+  );
+
+  function A() {}
+  A.prototype.b = 2;
+  Assert.ok(
+    !ObjectUtils.isEmpty(new A()),
+    "Objects with inherited enumerable properties should not be empty"
+  );
+});