1 files changed, 23 insertions, 0 deletions
diff --git a/dom/tests/browser/browser_navigate_replace_browsingcontext.js b/dom/tests/browser/browser_navigate_replace_browsingcontext.js
new file mode 100644
index 0000000000..05f96e96bf
--- /dev/null
+++ b/dom/tests/browser/browser_navigate_replace_browsingcontext.js
@@ -0,0 +1,23 @@
+add_task(async function parent_to_remote() {
+  await BrowserTestUtils.withNewTab("about:mozilla", async browser => {
+    let originalBC = browser.browsingContext;
+
+    BrowserTestUtils.startLoadingURIString(browser, "https://example.com/");
+    await BrowserTestUtils.browserLoaded(browser);
+    let newBC = browser.browsingContext;
+
+    isnot(originalBC.id, newBC.id, "Should have replaced the BrowsingContext");
+  });
+});
+
+add_task(async function remote_to_parent() {
+  await BrowserTestUtils.withNewTab("https://example.com/", async browser => {
+    let originalBC = browser.browsingContext;
+
+    BrowserTestUtils.startLoadingURIString(browser, "about:mozilla");
+    await BrowserTestUtils.browserLoaded(browser);
+    let newBC = browser.browsingContext;
+
+    isnot(originalBC.id, newBC.id, "Should have replaced the BrowsingContext");
+  });
+});