1 files changed, 23 insertions, 0 deletions
diff --git a/browser/components/uitour/test/browser_closeTab.js b/browser/components/uitour/test/browser_closeTab.js
new file mode 100644
index 0000000000..24984303f6
--- /dev/null
+++ b/browser/components/uitour/test/browser_closeTab.js
@@ -0,0 +1,23 @@
+"use strict";
+
+var gTestTab;
+var gContentAPI;
+
+add_task(setup_UITourTest);
+
+add_UITour_task(async function test_closeTab() {
+  // Setting gTestTab to null indicates that the tab has already been closed,
+  // and if this does not happen the test run will fail.
+  let closePromise = BrowserTestUtils.waitForEvent(
+    gBrowser.tabContainer,
+    "TabClose"
+  );
+  // In the e10s-case, having content request a tab close might mean
+  // that the ContentTask used to send this closeTab message won't
+  // get a response (since the message manager may have closed down).
+  // So we ignore the Promise that closeTab returns, and use the TabClose
+  // event to tell us when the tab has gone away.
+  gContentAPI.closeTab();
+  await closePromise;
+  gTestTab = null;
+});