1 files changed, 41 insertions, 0 deletions
diff --git a/browser/base/content/test/tabs/browser_openURI_background.js b/browser/base/content/test/tabs/browser_openURI_background.js
new file mode 100644
index 0000000000..53e329dd8f
--- /dev/null
+++ b/browser/base/content/test/tabs/browser_openURI_background.js
@@ -0,0 +1,41 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+add_task(async function () {
+  const tabCount = gBrowser.tabs.length;
+  const currentTab = gBrowser.selectedTab;
+
+  const tests = [
+    ["OPEN_NEWTAB", false],
+    ["OPEN_NEWTAB_BACKGROUND", true],
+  ];
+
+  for (const [flag, isBackground] of tests) {
+    window.browserDOMWindow.openURI(
+      makeURI("about:blank"),
+      null,
+      Ci.nsIBrowserDOMWindow[flag],
+      Ci.nsIBrowserDOMWindow.OPEN_NEW,
+      Services.scriptSecurityManager.getSystemPrincipal()
+    );
+
+    is(gBrowser.tabs.length, tabCount + 1, `${flag} opens a new tab`);
+
+    const openedTab = gBrowser.tabs[tabCount];
+
+    if (isBackground) {
+      is(
+        gBrowser.selectedTab,
+        currentTab,
+        `${flag} opens a new background tab`
+      );
+    } else {
+      is(gBrowser.selectedTab, openedTab, `${flag} opens a new foreground tab`);
+    }
+
+    gBrowser.removeTab(openedTab);
+  }
+});