1 files changed, 88 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_history_triggeringprincipal_viewsource.js b/docshell/test/browser/browser_history_triggeringprincipal_viewsource.js
new file mode 100644
index 0000000000..d542ef892c
--- /dev/null
+++ b/docshell/test/browser/browser_history_triggeringprincipal_viewsource.js
@@ -0,0 +1,88 @@
+"use strict";
+
+const TEST_PATH = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com"
+);
+const HTML_URI = TEST_PATH + "dummy_page.html";
+const VIEW_SRC_URI = "view-source:" + HTML_URI;
+
+add_task(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.navigation.requireUserInteraction", false]],
+  });
+
+  info("load baseline html in new tab");
+  await BrowserTestUtils.withNewTab(HTML_URI, async function (aBrowser) {
+    is(
+      gBrowser.selectedBrowser.currentURI.spec,
+      HTML_URI,
+      "sanity check to make sure html loaded"
+    );
+
+    info("right-click -> view-source of html");
+    let vSrcCtxtMenu = document.getElementById("contentAreaContextMenu");
+    let popupPromise = BrowserTestUtils.waitForEvent(
+      vSrcCtxtMenu,
+      "popupshown"
+    );
+    BrowserTestUtils.synthesizeMouseAtCenter(
+      "body",
+      { type: "contextmenu", button: 2 },
+      aBrowser
+    );
+    await popupPromise;
+    let tabPromise = BrowserTestUtils.waitForNewTab(gBrowser, VIEW_SRC_URI);
+    let vSrcItem = vSrcCtxtMenu.querySelector("#context-viewsource");
+    vSrcCtxtMenu.activateItem(vSrcItem);
+    let tab = await tabPromise;
+    is(
+      gBrowser.selectedBrowser.currentURI.spec,
+      VIEW_SRC_URI,
+      "loading view-source of html succeeded"
+    );
+
+    info("load html file again before going .back()");
+    let loadPromise = BrowserTestUtils.browserLoaded(
+      tab.linkedBrowser,
+      false,
+      HTML_URI
+    );
+    await SpecialPowers.spawn(tab.linkedBrowser, [HTML_URI], HTML_URI => {
+      content.document.location = HTML_URI;
+    });
+    await loadPromise;
+    is(
+      gBrowser.selectedBrowser.currentURI.spec,
+      HTML_URI,
+      "loading html another time succeeded"
+    );
+
+    info(
+      "click .back() to view-source of html again and make sure the history entry has a triggeringPrincipal"
+    );
+    let backCtxtMenu = document.getElementById("contentAreaContextMenu");
+    popupPromise = BrowserTestUtils.waitForEvent(backCtxtMenu, "popupshown");
+    BrowserTestUtils.synthesizeMouseAtCenter(
+      "body",
+      { type: "contextmenu", button: 2 },
+      aBrowser
+    );
+    await popupPromise;
+    loadPromise = BrowserTestUtils.waitForContentEvent(
+      tab.linkedBrowser,
+      "pageshow"
+    );
+    let backItem = backCtxtMenu.querySelector("#context-back");
+    backCtxtMenu.activateItem(backItem);
+    await loadPromise;
+    is(
+      gBrowser.selectedBrowser.currentURI.spec,
+      VIEW_SRC_URI,
+      "clicking .back() to view-source of html succeeded"
+    );
+
+    BrowserTestUtils.removeTab(tab);
+  });
+});