1 files changed, 82 insertions, 0 deletions
diff --git a/toolkit/components/pdfjs/test/browser_pdfjs_caret_browsing_mode.js b/toolkit/components/pdfjs/test/browser_pdfjs_caret_browsing_mode.js
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index 0000000000..a7b2a518d9
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+++ b/toolkit/components/pdfjs/test/browser_pdfjs_caret_browsing_mode.js
@@ -0,0 +1,82 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const RELATIVE_DIR = "toolkit/components/pdfjs/test/";
+const TESTROOT = "https://example.com/browser/" + RELATIVE_DIR;
+const pdfUrl = TESTROOT + "file_pdfjs_test.pdf";
+const caretBrowsingModePref = "accessibility.browsewithcaret";
+
+// Test telemetry.
+add_task(async function test() {
+  let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
+  let handlerInfo = mimeService.getFromTypeAndExtension(
+    "application/pdf",
+    "pdf"
+  );
+
+  // Make sure pdf.js is the default handler.
+  is(
+    handlerInfo.alwaysAskBeforeHandling,
+    false,
+    "pdf handler defaults to always-ask is false"
+  );
+  is(
+    handlerInfo.preferredAction,
+    Ci.nsIHandlerInfo.handleInternally,
+    "pdf handler defaults to internal"
+  );
+
+  info("Pref action: " + handlerInfo.preferredAction);
+
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url: "about:blank" },
+    async function test_caret_browsing_mode(browser) {
+      await waitForPdfJS(browser, pdfUrl);
+
+      let promise = BrowserTestUtils.waitForContentEvent(
+        browser,
+        "updatedPreference",
+        false,
+        null,
+        true
+      );
+      await SpecialPowers.pushPrefEnv({
+        set: [[caretBrowsingModePref, true]],
+      });
+      await promise;
+      await TestUtils.waitForTick();
+
+      await SpecialPowers.spawn(browser, [], async function () {
+        const viewer = content.wrappedJSObject.PDFViewerApplication;
+        Assert.ok(
+          viewer.supportsCaretBrowsingMode,
+          "Caret browsing mode is supported"
+        );
+      });
+
+      promise = BrowserTestUtils.waitForContentEvent(
+        browser,
+        "updatedPreference",
+        false,
+        null,
+        true
+      );
+      await SpecialPowers.popPrefEnv();
+      await promise;
+      await TestUtils.waitForTick();
+
+      await SpecialPowers.spawn(browser, [], async function () {
+        const viewer = content.wrappedJSObject.PDFViewerApplication;
+        Assert.ok(
+          !viewer.supportsCaretBrowsingMode,
+          "Caret browsing mode isn't supported"
+        );
+      });
+
+      await SpecialPowers.spawn(browser, [], async function () {
+        const viewer = content.wrappedJSObject.PDFViewerApplication;
+        await viewer.close();
+      });
+    }
+  );
+});