1 files changed, 47 insertions, 0 deletions
diff --git a/uriloader/exthandler/tests/mochitest/browser_download_idn_blocklist.js b/uriloader/exthandler/tests/mochitest/browser_download_idn_blocklist.js
new file mode 100644
index 0000000000..0d49a898a0
--- /dev/null
+++ b/uriloader/exthandler/tests/mochitest/browser_download_idn_blocklist.js
@@ -0,0 +1,47 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_HOST = "example.org";
+const TEST_FILE = "\u3002.bin";
+const TEST_URL = `http://${TEST_HOST}/${TEST_FILE}`;
+
+const { XPCShellContentUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/XPCShellContentUtils.sys.mjs"
+);
+XPCShellContentUtils.initMochitest(this);
+const server = XPCShellContentUtils.createHttpServer({
+  hosts: [TEST_HOST],
+});
+let file = getChromeDir(getResolvedURI(gTestPath));
+file.append("download.bin");
+server.registerFile(`/${encodeURIComponent(TEST_FILE)}`, file);
+
+/**
+ * Check that IDN blocklisted characters are not escaped in
+ * download file names.
+ */
+add_task(async function test_idn_blocklisted_char_not_escaped() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.download.always_ask_before_handling_new_types", false]],
+  });
+
+  info("Testing with " + TEST_URL);
+  let publicList = await Downloads.getList(Downloads.PUBLIC);
+  registerCleanupFunction(async () => {
+    await publicList.removeFinished();
+  });
+  let downloadFinished = promiseDownloadFinished(publicList);
+  var tab = BrowserTestUtils.addTab(gBrowser, TEST_URL);
+  let dl = await downloadFinished;
+  ok(dl.succeeded, "Download should succeed.");
+  Assert.equal(
+    PathUtils.filename(dl.target.path),
+    TEST_FILE,
+    "Should not escape a download file name."
+  );
+  await IOUtils.remove(dl.target.path);
+
+  BrowserTestUtils.removeTab(tab);
+});