1 files changed, 38 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_bug1674464.js b/docshell/test/browser/browser_bug1674464.js
new file mode 100644
index 0000000000..ff9e990a40
--- /dev/null
+++ b/docshell/test/browser/browser_bug1674464.js
@@ -0,0 +1,38 @@
+const DUMMY_1 =
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.org/browser/docshell/test/browser/dummy_page.html";
+const DUMMY_2 =
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com/browser/docshell/test/browser/dummy_page.html";
+
+add_task(async function test_backAndReload() {
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url: DUMMY_1 },
+    async function (browser) {
+      await BrowserTestUtils.crashFrame(browser);
+
+      info("Start second load.");
+      BrowserTestUtils.startLoadingURIString(browser, DUMMY_2);
+      await BrowserTestUtils.waitForLocationChange(gBrowser, DUMMY_2);
+
+      browser.goBack();
+      await BrowserTestUtils.waitForLocationChange(gBrowser);
+
+      is(
+        browser.browsingContext.childSessionHistory.index,
+        0,
+        "We should have gone back to the first page"
+      );
+      is(
+        browser.browsingContext.childSessionHistory.count,
+        2,
+        "If a tab crashes after a load has finished we shouldn't have an entry for about:tabcrashed"
+      );
+      is(
+        browser.documentURI.spec,
+        DUMMY_1,
+        "If a tab crashes after a load has finished we shouldn't have an entry for about:tabcrashed"
+      );
+    }
+  );
+});