1 files changed, 54 insertions, 0 deletions
diff --git a/browser/components/urlbar/tests/browser/browser_url_formatted_correctly_on_load.js b/browser/components/urlbar/tests/browser/browser_url_formatted_correctly_on_load.js
new file mode 100644
index 0000000000..fe923b4ebf
--- /dev/null
+++ b/browser/components/urlbar/tests/browser/browser_url_formatted_correctly_on_load.js
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+ChromeUtils.defineESModuleGetters(this, {
+  XPCShellContentUtils:
+    "resource://testing-common/XPCShellContentUtils.sys.mjs",
+});
+
+let PUNYCODE_PAGE = "xn--31b1c3b9b.com";
+// eslint-disable-next-line @microsoft/sdl/no-insecure-url
+let DECODED_PAGE = "http://योगा.com/";
+
+function startServer() {
+  XPCShellContentUtils.ensureInitialized(this);
+  let server = XPCShellContentUtils.createHttpServer({
+    hosts: [PUNYCODE_PAGE],
+  });
+  server.registerPathHandler("/", (request, response) => {
+    response.write("<html>A page without icon</html>");
+  });
+}
+
+add_task(async function test_url_formatted_correctly_on_page_load() {
+  SpecialPowers.pushPrefEnv({ set: [["browser.urlbar.trimURLs", false]] });
+  startServer();
+
+  let onValueChangeCalledAtLeastOnce = false;
+  let onValueChanged = _ => {
+    is(gURLBar.value, DECODED_PAGE, "Value is decoded.");
+    onValueChangeCalledAtLeastOnce = true;
+  };
+
+  gURLBar.inputField.addEventListener("ValueChange", onValueChanged);
+  registerCleanupFunction(() => {
+    gURLBar.inputField.removeEventListener("ValueChange", onValueChanged);
+  });
+
+  BrowserTestUtils.startLoadingURIString(gBrowser, PUNYCODE_PAGE);
+  // Check that whenever the value of the urlbar is changed, the correct
+  // decoded punycode url is used.
+  await BrowserTestUtils.browserLoaded(gBrowser, false, null, true);
+
+  ok(
+    onValueChangeCalledAtLeastOnce,
+    "OnValueChanged of UrlbarInput was called at least once."
+  );
+  // Check that the final value is decoded punycode as well.
+  is(gURLBar.value, DECODED_PAGE, "Final Urlbar value is correct");
+
+  // Cleanup.
+  SpecialPowers.popPrefEnv();
+});