1 files changed, 54 insertions, 0 deletions
diff --git a/browser/components/urlbar/tests/browser/browser_blanking.js b/browser/components/urlbar/tests/browser/browser_blanking.js
new file mode 100644
index 0000000000..eabaa2575d
--- /dev/null
+++ b/browser/components/urlbar/tests/browser/browser_blanking.js
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_URL = `${TEST_BASE_URL}file_blank_but_not_blank.html`;
+
+add_task(async function () {
+  for (let page of gInitialPages) {
+    if (page == "about:newtab") {
+      // New tab preloading makes this a pain to test, so skip
+      continue;
+    }
+    let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, page);
+    ok(
+      !gURLBar.value,
+      "The URL bar should be empty if we load a plain " + page + " page."
+    );
+    BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function () {
+  // The test was originally to check that reloading of a javascript: URL could
+  // throw an error and empty the URL bar. This situation can no longer happen
+  // as in bug 836567 we set document.URL to active document's URL on navigation
+  // to a javascript: URL; reloading after that will simply reload the original
+  // active document rather than the javascript: URL itself. But we can still
+  // verify that the URL bar's value is correct.
+  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);
+  is(gURLBar.value, TEST_URL, "The URL bar should match the URI");
+  let browserLoaded = BrowserTestUtils.browserLoaded(tab.linkedBrowser);
+  SpecialPowers.spawn(tab.linkedBrowser, [], function () {
+    content.document.querySelector("a").click();
+  });
+  await browserLoaded;
+  is(
+    gURLBar.value,
+    TEST_URL,
+    "The URL bar should be the previous active document's URI."
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async function () {
+    // This is sync, so by the time we return we should have changed the URL bar.
+    content.location.reload();
+  }).catch(e => {
+    // Ignore expected exception.
+  });
+  is(
+    gURLBar.value,
+    TEST_URL,
+    "The URL bar should still be the previous active document's URI."
+  );
+  BrowserTestUtils.removeTab(tab);
+});