1 files changed, 36 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_test_offline_tab.js b/netwerk/test/browser/browser_test_offline_tab.js
new file mode 100644
index 0000000000..bf60b4f462
--- /dev/null
+++ b/netwerk/test/browser/browser_test_offline_tab.js
@@ -0,0 +1,36 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function test_set_tab_offline() {
+  await BrowserTestUtils.withNewTab("https://example.com", async browser => {
+    // Set the tab to offline
+    gBrowser.selectedBrowser.browsingContext.forceOffline = true;
+
+    await SpecialPowers.spawn(browser, [], async () => {
+      try {
+        await content.fetch("https://example.com/empty.html");
+        ok(false, "Should not load since tab is offline");
+      } catch (err) {
+        is(err.name, "TypeError", "Should fail since tab is offline");
+      }
+    });
+  });
+});
+
+add_task(async function test_set_tab_online() {
+  await BrowserTestUtils.withNewTab("https://example.com", async browser => {
+    // Set the tab to online
+    gBrowser.selectedBrowser.browsingContext.forceOffline = false;
+
+    await SpecialPowers.spawn(browser, [], async () => {
+      try {
+        await content.fetch("https://example.com/empty.html");
+        ok(true, "Should load since tab is online");
+      } catch (err) {
+        ok(false, "Should not fail since tab is online");
+      }
+    });
+  });
+});