1 files changed, 33 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_bug554155.js b/docshell/test/browser/browser_bug554155.js
new file mode 100644
index 0000000000..223f6241de
--- /dev/null
+++ b/docshell/test/browser/browser_bug554155.js
@@ -0,0 +1,33 @@
+add_task(async function test() {
+  await BrowserTestUtils.withNewTab(
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    { gBrowser, url: "http://example.com" },
+    async function (browser) {
+      let numLocationChanges = 0;
+
+      let listener = {
+        onLocationChange(browser, webProgress, request, uri, flags) {
+          info("location change: " + (uri && uri.spec));
+          numLocationChanges++;
+        },
+      };
+
+      gBrowser.addTabsProgressListener(listener);
+
+      await SpecialPowers.spawn(browser, [], function () {
+        // pushState to a new URL (http://example.com/foo").  This should trigger
+        // exactly one LocationChange event.
+        content.history.pushState(null, null, "foo");
+      });
+
+      await Promise.resolve();
+
+      gBrowser.removeTabsProgressListener(listener);
+      is(
+        numLocationChanges,
+        1,
+        "pushState should cause exactly one LocationChange event."
+      );
+    }
+  );
+});