1 files changed, 19 insertions, 0 deletions
diff --git a/browser/base/content/test/tabMediaIndicator/browser_mute.js b/browser/base/content/test/tabMediaIndicator/browser_mute.js
new file mode 100644
index 0000000000..b51adc270b
--- /dev/null
+++ b/browser/base/content/test/tabMediaIndicator/browser_mute.js
@@ -0,0 +1,19 @@
+const PAGE = "data:text/html,page";
+
+function test_on_browser(browser) {
+  ok(!browser.audioMuted, "Audio should not be muted by default");
+  browser.mute();
+  ok(browser.audioMuted, "Audio should be muted now");
+  browser.unmute();
+  ok(!browser.audioMuted, "Audio should be unmuted now");
+}
+
+add_task(async function() {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: PAGE,
+    },
+    test_on_browser
+  );
+});