1 files changed, 73 insertions, 0 deletions
diff --git a/services/common/tests/unit/test_utils_namedTimer.js b/services/common/tests/unit/test_utils_namedTimer.js
new file mode 100644
index 0000000000..47ac0b9dc1
--- /dev/null
+++ b/services/common/tests/unit/test_utils_namedTimer.js
@@ -0,0 +1,73 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_test(function test_required_args() {
+  try {
+    CommonUtils.namedTimer(function callback() {
+      do_throw("Shouldn't fire.");
+    }, 0);
+    do_throw("Should have thrown!");
+  } catch (ex) {
+    run_next_test();
+  }
+});
+
+add_test(function test_simple() {
+  _("Test basic properties of CommonUtils.namedTimer.");
+
+  const delay = 200;
+  let that = {};
+  let t0 = Date.now();
+  CommonUtils.namedTimer(
+    function callback(timer) {
+      Assert.equal(this, that);
+      Assert.equal(this._zetimer, null);
+      Assert.ok(timer instanceof Ci.nsITimer);
+      // Difference should be ~delay, but hard to predict on all platforms,
+      // particularly Windows XP.
+      Assert.ok(Date.now() > t0);
+      run_next_test();
+    },
+    delay,
+    that,
+    "_zetimer"
+  );
+});
+
+add_test(function test_delay() {
+  _("Test delaying a timer that hasn't fired yet.");
+
+  const delay = 100;
+  let that = {};
+  let t0 = Date.now();
+  function callback(timer) {
+    // Difference should be ~2*delay, but hard to predict on all platforms,
+    // particularly Windows XP.
+    Assert.ok(Date.now() - t0 > delay);
+    run_next_test();
+  }
+  CommonUtils.namedTimer(callback, delay, that, "_zetimer");
+  CommonUtils.namedTimer(callback, 2 * delay, that, "_zetimer");
+  run_next_test();
+});
+
+add_test(function test_clear() {
+  _("Test clearing a timer that hasn't fired yet.");
+
+  const delay = 0;
+  let that = {};
+  CommonUtils.namedTimer(
+    function callback(timer) {
+      do_throw("Shouldn't fire!");
+    },
+    delay,
+    that,
+    "_zetimer"
+  );
+
+  that._zetimer.clear();
+  Assert.equal(that._zetimer, null);
+  CommonUtils.nextTick(run_next_test);
+
+  run_next_test();
+});