1 files changed, 46 insertions, 0 deletions
diff --git a/testing/mochitest/tests/browser/browser_browserLoaded_content_loaded.js b/testing/mochitest/tests/browser/browser_browserLoaded_content_loaded.js
new file mode 100644
index 000000000..5de7794f5
--- /dev/null
+++ b/testing/mochitest/tests/browser/browser_browserLoaded_content_loaded.js
@@ -0,0 +1,46 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+'use strict';
+
+function isDOMLoaded(browser) {
+  return ContentTask.spawn(browser, null, function*() {
+    Assert.equal(content.document.readyState, "complete",
+      "Browser should be loaded.");
+  });
+}
+
+// It checks if calling BrowserTestUtils.browserLoaded() yields
+// browser object.
+add_task(function*() {
+  let tab = gBrowser.addTab('http://example.com');
+  let browser = tab.linkedBrowser;
+  yield BrowserTestUtils.browserLoaded(browser);
+  yield isDOMLoaded(browser);
+  gBrowser.removeTab(tab);
+});
+
+// It checks that BrowserTestUtils.browserLoaded() works well with
+// promise.all().
+add_task(function*() {
+  let tabURLs = [
+    `http://example.org`,
+    `http://mochi.test:8888`,
+    `http://test:80`,
+  ];
+  //Add tabs, get the respective browsers
+  let browsers = [
+    for (u of tabURLs) gBrowser.addTab(u).linkedBrowser
+  ];
+  //wait for promises to settle
+  yield Promise.all((
+    for (b of browsers) BrowserTestUtils.browserLoaded(b)
+  ));
+  let expected = 'Expected all promised browsers to have loaded.';
+  for (const browser of browsers) {
+    yield isDOMLoaded(browser);
+  }
+  //cleanup
+  browsers
+    .map(browser => gBrowser.getTabForBrowser(browser))
+    .forEach(tab => gBrowser.removeTab(tab));
+});