1 files changed, 45 insertions, 0 deletions
diff --git a/comm/mail/test/browser/composition/browser_xUnsent.js b/comm/mail/test/browser/composition/browser_xUnsent.js
new file mode 100644
index 0000000000..dd3be86294
--- /dev/null
+++ b/comm/mail/test/browser/composition/browser_xUnsent.js
@@ -0,0 +1,45 @@
+/* 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/. */
+
+/**
+ * Tests that X-Unsent .eml messages are correctly opened for composition.
+ */
+
+"use strict";
+
+var { MailUtils } = ChromeUtils.import("resource:///modules/MailUtils.jsm");
+
+function waitForComposeWindow() {
+  return BrowserTestUtils.domWindowOpened(null, async win => {
+    await BrowserTestUtils.waitForEvent(win, "load");
+    await BrowserTestUtils.waitForEvent(win, "focus", true);
+    return (
+      win.document.documentURI ===
+      "chrome://messenger/content/messengercompose/messengercompose.xhtml"
+    );
+  });
+}
+
+/**
+ * Tests that opening an .eml with X-Unsent: 1 opens composition correctly.
+ */
+add_task(async function openXUnsent() {
+  let compWinReady = waitForComposeWindow();
+  let file = new FileUtils.File(getTestFilePath(`data/xunsent.eml`));
+  let fileURL = Services.io
+    .newFileURI(file)
+    .QueryInterface(Ci.nsIFileURL)
+    .mutate()
+    .setQuery("type=application/x-message-display")
+    .finalize();
+  MailUtils.openEMLFile(window, file, fileURL);
+  let compWin = await compWinReady;
+
+  Assert.equal(
+    compWin.document.getElementById("msgSubject").value,
+    "xx unsent",
+    "Should open as draft with correct subject"
+  );
+  compWin.close();
+});