1 files changed, 149 insertions, 0 deletions
diff --git a/toolkit/modules/tests/xpcshell/test_timer.js b/toolkit/modules/tests/xpcshell/test_timer.js
new file mode 100644
index 0000000000..421244c769
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_timer.js
@@ -0,0 +1,149 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests exports from Timer.sys.mjs
+
+var imported = ChromeUtils.importESModule(
+  "resource://gre/modules/Timer.sys.mjs"
+);
+
+add_task(async function test_setTimeout() {
+  let timeout1 = imported.setTimeout(
+    () => do_throw("Should not be called"),
+    100
+  );
+  Assert.equal(typeof timeout1, "number", "setTimeout returns a number");
+  Assert.greater(timeout1, 0, "setTimeout returns a positive number");
+
+  imported.clearTimeout(timeout1);
+
+  await new Promise(resolve => {
+    let timeout2 = imported.setTimeout(
+      (param1, param2) => {
+        Assert.ok(true, "Should be called");
+        Assert.equal(param1, 5, "first parameter is correct");
+        Assert.equal(param2, "test", "second parameter is correct");
+        resolve();
+      },
+      100,
+      5,
+      "test"
+    );
+
+    Assert.equal(typeof timeout2, "number", "setTimeout returns a number");
+    Assert.greater(timeout2, 0, "setTimeout returns a positive number");
+    Assert.notEqual(
+      timeout1,
+      timeout2,
+      "Calling setTimeout again returns a different value"
+    );
+  });
+});
+
+add_task(async function test_setInterval() {
+  let interval1 = imported.setInterval(
+    () => do_throw("Should not be called!"),
+    100
+  );
+  Assert.equal(typeof interval1, "number", "setInterval returns a number");
+  Assert.greater(interval1, 0, "setTimeout returns a positive number");
+
+  imported.clearInterval(interval1);
+
+  const EXPECTED_CALLS = 5;
+  let calls = 0;
+
+  await new Promise(resolve => {
+    let interval2 = imported.setInterval(
+      (param1, param2) => {
+        Assert.ok(true, "Should be called");
+        Assert.equal(param1, 15, "first parameter is correct");
+        Assert.equal(param2, "hola", "second parameter is correct");
+        if (calls >= EXPECTED_CALLS) {
+          imported.clearInterval(interval2);
+          resolve();
+        }
+        calls++;
+      },
+      100,
+      15,
+      "hola"
+    );
+  });
+});
+
+add_task(async function test_setTimeoutNonFunction() {
+  Assert.throws(() => {
+    imported.setTimeout({}, 0);
+  }, /callback is not a function in setTimeout/);
+});
+
+add_task(async function test_setIntervalNonFunction() {
+  Assert.throws(() => {
+    imported.setInterval({}, 0);
+  }, /callback is not a function in setInterval/);
+});
+
+add_task(async function test_setTimeoutWithTargetNonFunction() {
+  Assert.throws(() => {
+    imported.setTimeoutWithTarget({}, 0);
+  }, /callback is not a function in setTimeout/);
+});
+
+add_task(async function test_setIntervalWithTargetNonFunction() {
+  Assert.throws(() => {
+    imported.setIntervalWithTarget({}, 0);
+  }, /callback is not a function in setInterval/);
+});
+
+add_task(async function test_requestIdleCallback() {
+  let request1 = imported.requestIdleCallback(() =>
+    do_throw("Should not be called")
+  );
+  Assert.equal(
+    typeof request1,
+    "number",
+    "requestIdleCallback returns a number"
+  );
+  Assert.greater(request1, 0, "setTimeout returns a positive number");
+
+  imported.cancelIdleCallback(request1);
+
+  await new Promise(resolve => {
+    let request2 = imported.requestIdleCallback(
+      deadline => {
+        Assert.ok(true, "Should be called");
+        Assert.equal(
+          typeof deadline.didTimeout,
+          "boolean",
+          "deadline parameter has .didTimeout property"
+        );
+        Assert.equal(
+          typeof deadline.timeRemaining(),
+          "number",
+          "deadline parameter has .timeRemaining() function"
+        );
+        resolve();
+      },
+      { timeout: 100 }
+    );
+
+    Assert.equal(
+      typeof request2,
+      "number",
+      "requestIdleCallback returns a number"
+    );
+    Assert.greater(
+      request2,
+      0,
+      "requestIdleCallback returns a positive number"
+    );
+    Assert.notEqual(
+      request1,
+      request2,
+      "Calling requestIdleCallback again returns a different value"
+    );
+  });
+});