1 files changed, 54 insertions, 0 deletions
diff --git a/toolkit/components/reader/test/browser_localfile_readerMode.js b/toolkit/components/reader/test/browser_localfile_readerMode.js
new file mode 100644
index 0000000000..118e4bb23f
--- /dev/null
+++ b/toolkit/components/reader/test/browser_localfile_readerMode.js
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_BASE_URI = getResolvedURI(getRootDirectory(gTestPath)).spec;
+
+let readerButton = document.getElementById("reader-mode-button");
+
+/**
+ * Reader mode should work on local files.
+ */
+add_task(async function test_readermode_available_for_local_files() {
+  await BrowserTestUtils.withNewTab(
+    TEST_BASE_URI + "readerModeArticle.html",
+    async function (browser) {
+      await TestUtils.waitForCondition(
+        () => !readerButton.hidden,
+        "Reader mode button should become visible"
+      );
+
+      is_element_visible(
+        readerButton,
+        "Reader mode button is present on a reader-able page"
+      );
+
+      // Switch page into reader mode.
+      let promiseTabLoad = BrowserTestUtils.browserLoaded(browser);
+      readerButton.click();
+      await promiseTabLoad;
+
+      let readerUrl = gBrowser.selectedBrowser.currentURI.spec;
+      ok(
+        readerUrl.startsWith("about:reader"),
+        "about:reader loaded after clicking reader mode button"
+      );
+      is_element_visible(
+        readerButton,
+        "Reader mode button is present on about:reader"
+      );
+
+      is(
+        gURLBar.untrimmedValue,
+        TEST_BASE_URI + "readerModeArticle.html",
+        "gURLBar value is about:reader URL"
+      );
+      is(
+        gURLBar.value,
+        gURLBar.untrimmedValue,
+        "gURLBar is displaying original article URL"
+      );
+    }
+  );
+});