1 files changed, 40 insertions, 0 deletions
diff --git a/remote/cdp/test/xpcshell/test_Session.js b/remote/cdp/test/xpcshell/test_Session.js
new file mode 100644
index 0000000000..3cd8adc7e3
--- /dev/null
+++ b/remote/cdp/test/xpcshell/test_Session.js
@@ -0,0 +1,40 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { Session } = ChromeUtils.importESModule(
+  "chrome://remote/content/cdp/sessions/Session.sys.mjs"
+);
+
+const connection = {
+  registerSession: () => {},
+  transport: {
+    on: () => {},
+  },
+};
+
+class MockTarget {
+  constructor() {}
+
+  get browsingContext() {
+    return { id: 42 };
+  }
+
+  get mm() {
+    return {
+      addMessageListener() {},
+      removeMessageListener() {},
+      loadFrameScript() {},
+      sendAsyncMessage() {},
+    };
+  }
+}
+
+add_task(function test_Session_destructor() {
+  const session = new Session(connection, new MockTarget());
+  session.domains.get("Browser");
+  equal(session.domains.size, 1);
+  session.destructor();
+  equal(session.domains.size, 0);
+});