1 files changed, 166 insertions, 0 deletions
diff --git a/browser/components/urlbar/tests/browser/browser_valueOnTabSwitch.js b/browser/components/urlbar/tests/browser/browser_valueOnTabSwitch.js
new file mode 100644
index 0000000000..9d3e922692
--- /dev/null
+++ b/browser/components/urlbar/tests/browser/browser_valueOnTabSwitch.js
@@ -0,0 +1,166 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * This tests for the correct URL being displayed in the URL bar after switching
+ * tabs which are in different states (e.g. deleted, partially deleted).
+ */
+
+"use strict";
+
+const TEST_URL = `${TEST_BASE_URL}dummy_page.html`;
+
+add_task(async function () {
+  // autofill may conflict with the test scope, by filling missing parts of
+  // the url due to autoOpen.
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.urlbar.autoFill", false]],
+  });
+
+  let charsToDelete,
+    deletedURLTab,
+    fullURLTab,
+    partialURLTab,
+    testPartialURL,
+    testURL;
+
+  charsToDelete = 5;
+  deletedURLTab = BrowserTestUtils.addTab(gBrowser);
+  fullURLTab = BrowserTestUtils.addTab(gBrowser);
+  partialURLTab = BrowserTestUtils.addTab(gBrowser);
+  testURL = TEST_URL;
+
+  let loaded1 = BrowserTestUtils.browserLoaded(
+    deletedURLTab.linkedBrowser,
+    false,
+    testURL
+  );
+  let loaded2 = BrowserTestUtils.browserLoaded(
+    fullURLTab.linkedBrowser,
+    false,
+    testURL
+  );
+  let loaded3 = BrowserTestUtils.browserLoaded(
+    partialURLTab.linkedBrowser,
+    false,
+    testURL
+  );
+  BrowserTestUtils.loadURIString(deletedURLTab.linkedBrowser, testURL);
+  BrowserTestUtils.loadURIString(fullURLTab.linkedBrowser, testURL);
+  BrowserTestUtils.loadURIString(partialURLTab.linkedBrowser, testURL);
+  await Promise.all([loaded1, loaded2, loaded3]);
+
+  testURL = BrowserUIUtils.trimURL(testURL);
+  testPartialURL = testURL.substr(0, testURL.length - charsToDelete);
+
+  function cleanUp() {
+    gBrowser.removeTab(fullURLTab);
+    gBrowser.removeTab(partialURLTab);
+    gBrowser.removeTab(deletedURLTab);
+  }
+
+  async function cycleTabs() {
+    await BrowserTestUtils.switchTab(gBrowser, fullURLTab);
+    is(
+      gURLBar.value,
+      testURL,
+      "gURLBar.value should be testURL after switching back to fullURLTab"
+    );
+
+    await BrowserTestUtils.switchTab(gBrowser, partialURLTab);
+    is(
+      gURLBar.value,
+      testPartialURL,
+      "gURLBar.value should be testPartialURL after switching back to partialURLTab"
+    );
+    await BrowserTestUtils.switchTab(gBrowser, deletedURLTab);
+    is(
+      gURLBar.value,
+      testURL,
+      "gURLBar.value should be testURL after switching back to deletedURLTab"
+    );
+
+    await BrowserTestUtils.switchTab(gBrowser, fullURLTab);
+    is(
+      gURLBar.value,
+      testURL,
+      "gURLBar.value should be testURL after switching back to fullURLTab"
+    );
+  }
+
+  function urlbarBackspace(removeAll) {
+    return new Promise((resolve, reject) => {
+      gBrowser.selectedBrowser.focus();
+      gURLBar.addEventListener(
+        "input",
+        function () {
+          resolve();
+        },
+        { once: true }
+      );
+      gURLBar.focus();
+      if (removeAll) {
+        gURLBar.select();
+      } else {
+        gURLBar.selectionStart = gURLBar.selectionEnd = gURLBar.value.length;
+      }
+      EventUtils.synthesizeKey("KEY_Backspace");
+    });
+  }
+
+  async function prepareDeletedURLTab() {
+    await BrowserTestUtils.switchTab(gBrowser, deletedURLTab);
+    is(
+      gURLBar.value,
+      testURL,
+      "gURLBar.value should be testURL after initial switch to deletedURLTab"
+    );
+
+    // simulate the user removing the whole url from the location bar
+    await urlbarBackspace(true);
+    is(gURLBar.value, "", 'gURLBar.value should be "" (just set)');
+  }
+
+  async function prepareFullURLTab() {
+    await BrowserTestUtils.switchTab(gBrowser, fullURLTab);
+    is(
+      gURLBar.value,
+      testURL,
+      "gURLBar.value should be testURL after initial switch to fullURLTab"
+    );
+  }
+
+  async function preparePartialURLTab() {
+    await BrowserTestUtils.switchTab(gBrowser, partialURLTab);
+    is(
+      gURLBar.value,
+      testURL,
+      "gURLBar.value should be testURL after initial switch to partialURLTab"
+    );
+
+    // simulate the user removing part of the url from the location bar
+    let deleted = 0;
+    while (deleted < charsToDelete) {
+      await urlbarBackspace(false);
+      deleted++;
+    }
+
+    is(
+      gURLBar.value,
+      testPartialURL,
+      "gURLBar.value should be testPartialURL (just set)"
+    );
+  }
+
+  // prepare the three tabs required by this test
+
+  // First tab
+  await prepareFullURLTab();
+  await preparePartialURLTab();
+  await prepareDeletedURLTab();
+
+  // now cycle the tabs and make sure everything looks good
+  await cycleTabs();
+  cleanUp();
+});