1 files changed, 24 insertions, 0 deletions
diff --git a/dom/base/test/browser_xml_toggle.js b/dom/base/test/browser_xml_toggle.js
new file mode 100644
index 0000000000..477db038b1
--- /dev/null
+++ b/dom/base/test/browser_xml_toggle.js
@@ -0,0 +1,24 @@
+const URL = `data:text/xml,
+<?xml version="1.0" encoding="UTF-8"?>
+<note>
+  <to>Tove</to>
+  <from>Jani</from>
+  <heading>Reminder</heading>
+  <body>Don't forget me this weekend!</body>
+</note>
+`;
+
+add_task(async function xml_pretty_print_toggle() {
+  await BrowserTestUtils.withNewTab(URL, async function (browser) {
+    await SpecialPowers.spawn(browser, [], () => {
+      let summary =
+        content.document.documentElement.openOrClosedShadowRoot.querySelector(
+          "summary"
+        );
+      let details = summary.parentNode;
+      ok(details.open, "Should be open");
+      summary.click();
+      ok(!details.open, "Should be closed");
+    });
+  });
+});