1 files changed, 83 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_tab_replace_while_loading.js b/docshell/test/browser/browser_tab_replace_while_loading.js
new file mode 100644
index 0000000000..3c85f72192
--- /dev/null
+++ b/docshell/test/browser/browser_tab_replace_while_loading.js
@@ -0,0 +1,83 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* Test for bug 1578379. */
+
+add_task(async function test_window_open_about_blank() {
+  const URL =
+    "http://mochi.test:8888/browser/docshell/test/browser/file_open_about_blank.html";
+  let firstTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, URL);
+  let promiseTabOpened = BrowserTestUtils.waitForNewTab(
+    gBrowser,
+    "about:blank"
+  );
+
+  info("Opening about:blank using a click");
+  await SpecialPowers.spawn(firstTab.linkedBrowser, [""], async function () {
+    content.document.querySelector("#open").click();
+  });
+
+  info("Waiting for the second tab to be opened");
+  let secondTab = await promiseTabOpened;
+
+  info("Detaching tab");
+  let windowOpenedPromise = BrowserTestUtils.waitForNewWindow();
+  gBrowser.replaceTabWithWindow(secondTab);
+  let win = await windowOpenedPromise;
+
+  info("Asserting document is visible");
+  let tab = win.gBrowser.selectedTab;
+  await SpecialPowers.spawn(tab.linkedBrowser, [""], async function () {
+    is(
+      content.document.visibilityState,
+      "visible",
+      "Document should be visible"
+    );
+  });
+
+  await BrowserTestUtils.closeWindow(win);
+  await BrowserTestUtils.removeTab(firstTab);
+});
+
+add_task(async function test_detach_loading_page() {
+  const URL =
+    "http://mochi.test:8888/browser/docshell/test/browser/file_slow_load.sjs";
+  // Open a dummy tab so that detaching the second tab works.
+  let dummyTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:blank"
+  );
+  let slowLoadingTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    URL,
+    /* waitForLoad = */ false
+  );
+
+  info("Wait for content document to be created");
+  await BrowserTestUtils.waitForCondition(async function () {
+    return SpecialPowers.spawn(
+      slowLoadingTab.linkedBrowser,
+      [URL],
+      async function (url) {
+        return content.document.documentURI == url;
+      }
+    );
+  });
+
+  info("Detaching tab");
+  let windowOpenedPromise = BrowserTestUtils.waitForNewWindow();
+  gBrowser.replaceTabWithWindow(slowLoadingTab);
+  let win = await windowOpenedPromise;
+
+  info("Asserting document is visible");
+  let tab = win.gBrowser.selectedTab;
+  await SpecialPowers.spawn(tab.linkedBrowser, [""], async function () {
+    is(content.document.readyState, "loading");
+    is(content.document.visibilityState, "visible");
+  });
+
+  await BrowserTestUtils.closeWindow(win);
+  await BrowserTestUtils.removeTab(dummyTab);
+});