1 files changed, 33 insertions, 0 deletions
diff --git a/browser/components/newtab/test/browser/browser_enabled_newtabpage.js b/browser/components/newtab/test/browser/browser_enabled_newtabpage.js
new file mode 100644
index 0000000000..8762160cb1
--- /dev/null
+++ b/browser/components/newtab/test/browser/browser_enabled_newtabpage.js
@@ -0,0 +1,33 @@
+function getSpec(uri) {
+  const { spec } = NetUtil.newChannel({
+    loadUsingSystemPrincipal: true,
+    uri,
+  }).URI;
+
+  info(`got ${spec} for ${uri}`);
+  return spec;
+}
+
+add_task(async function test_newtab_enabled() {
+  ok(
+    !getSpec("about:newtab").endsWith("/blanktab.html"),
+    "did not get blank for default about:newtab"
+  );
+  ok(
+    !getSpec("about:home").endsWith("/blanktab.html"),
+    "did not get blank for default about:home"
+  );
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.newtabpage.enabled", false]],
+  });
+
+  ok(
+    getSpec("about:newtab").endsWith("/blanktab.html"),
+    "got special blank page when newtab is not enabled"
+  );
+  ok(
+    !getSpec("about:home").endsWith("/blanktab.html"),
+    "got special blank page for about:home"
+  );
+});