1 files changed, 35 insertions, 0 deletions
diff --git a/dom/ipc/tests/JSWindowActor/browser_contentWindow.js b/dom/ipc/tests/JSWindowActor/browser_contentWindow.js
new file mode 100644
index 0000000000..e061fd895c
--- /dev/null
+++ b/dom/ipc/tests/JSWindowActor/browser_contentWindow.js
@@ -0,0 +1,35 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+const CONTENT_WINDOW_URL = "https://example.com/";
+
+declTest("contentWindow null when inner window inactive", {
+  matches: [CONTENT_WINDOW_URL + "*"],
+  url: CONTENT_WINDOW_URL + "?1",
+
+  async test(browser) {
+    // If Fission is disabled, the pref is no-op.
+    await SpecialPowers.pushPrefEnv({
+      set: [["fission.bfcacheInParent", true]],
+    });
+
+    let parent = browser.browsingContext.currentWindowGlobal;
+    let actorParent = parent.getActor("TestWindow");
+
+    await actorParent.sendQuery("storeActor");
+
+    let url = CONTENT_WINDOW_URL + "?2";
+    let loaded = BrowserTestUtils.browserLoaded(browser, false, url);
+    BrowserTestUtils.startLoadingURIString(browser, url);
+    await loaded;
+
+    let result = await actorParent.sendQuery("checkActor");
+
+    is(result.status, "success", "Should succeed when bfcache is enabled");
+    ok(
+      result.valueIsNull,
+      "Should get a null contentWindow when inner window is inactive"
+    );
+  },
+});