1 files changed, 35 insertions, 0 deletions
diff --git a/browser/base/content/test/urlbar/browser_urlbar_blanking.js b/browser/base/content/test/urlbar/browser_urlbar_blanking.js
new file mode 100644
index 000000000..13660edab
--- /dev/null
+++ b/browser/base/content/test/urlbar/browser_urlbar_blanking.js
@@ -0,0 +1,35 @@
+"use strict";
+
+add_task(function*() {
+  for (let page of gInitialPages) {
+    if (page == "about:newtab") {
+      // New tab preloading makes this a pain to test, so skip
+      continue;
+    }
+    let tab = yield BrowserTestUtils.openNewForegroundTab(gBrowser, page);
+    ok(!gURLBar.value, "The URL bar should be empty if we load a plain " + page + " page.");
+    yield BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(function*() {
+  const URI = "http://www.example.com/browser/browser/base/content/test/urlbar/file_blank_but_not_blank.html";
+  let tab = yield BrowserTestUtils.openNewForegroundTab(gBrowser, URI);
+  is(gURLBar.value, URI, "The URL bar should match the URI");
+  let browserLoaded = BrowserTestUtils.browserLoaded(tab.linkedBrowser);
+  ContentTask.spawn(tab.linkedBrowser, null, function() {
+    content.document.querySelector('a').click();
+  });
+  yield browserLoaded;
+  ok(gURLBar.value.startsWith("javascript"), "The URL bar should have the JS URI");
+  // When reloading, the javascript: uri we're using will throw an exception.
+  // That's deliberate, so we need to tell mochitest to ignore it:
+  SimpleTest.expectUncaughtException(true);
+  yield ContentTask.spawn(tab.linkedBrowser, null, function*() {
+    // This is sync, so by the time we return we should have changed the URL bar.
+    content.location.reload();
+  });
+  ok(!!gURLBar.value, "URL bar should not be blank.");
+  yield BrowserTestUtils.removeTab(tab);
+  SimpleTest.expectUncaughtException(false);
+});