1 files changed, 27 insertions, 0 deletions
diff --git a/dom/ipc/tests/JSWindowActor/browser_process_childid.js b/dom/ipc/tests/JSWindowActor/browser_process_childid.js
new file mode 100644
index 0000000000..ba6db1dabb
--- /dev/null
+++ b/dom/ipc/tests/JSWindowActor/browser_process_childid.js
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Test that `process.childID` is defined.
+
+declTest("test childid", {
+  async test(browser) {
+    let parent = browser.browsingContext.currentWindowGlobal;
+    ok(
+      parent.domProcess.childID,
+      "parent domProcess.childID should have a value."
+    );
+    await SpecialPowers.spawn(
+      browser,
+      [parent.domProcess.childID],
+      async function (parentChildID) {
+        ok(
+          ChromeUtils.domProcessChild.childID,
+          "child process.childID should have a value."
+        );
+        let childID = ChromeUtils.domProcessChild.childID;
+        is(parentChildID, childID);
+      }
+    );
+  },
+});