1 files changed, 77 insertions, 0 deletions
diff --git a/browser/components/resistfingerprinting/test/browser/browser_bug1369357_site_specific_zoom_level.js b/browser/components/resistfingerprinting/test/browser/browser_bug1369357_site_specific_zoom_level.js
new file mode 100644
index 0000000000..f549c71bf0
--- /dev/null
+++ b/browser/components/resistfingerprinting/test/browser/browser_bug1369357_site_specific_zoom_level.js
@@ -0,0 +1,77 @@
+"use strict";
+
+const PATH_NET = TEST_PATH + "file_dummy.html";
+const PATH_ORG = PATH_NET.replace("example.net", "example.org");
+
+add_task(async function () {
+  let tab1, tab1Zoom, tab2, tab2Zoom, tab3, tab3Zoom;
+
+  tab1 = await BrowserTestUtils.openNewForegroundTab(gBrowser, PATH_NET);
+  await FullZoom.enlarge();
+  tab1Zoom = ZoomManager.getZoomForBrowser(tab1.linkedBrowser);
+
+  tab2 = await BrowserTestUtils.openNewForegroundTab(gBrowser, PATH_NET);
+  tab2Zoom = ZoomManager.getZoomForBrowser(tab2.linkedBrowser);
+
+  is(
+    tab2Zoom,
+    tab1Zoom,
+    "privacy.resistFingerprinting is false, site-specific zoom level should be enabled"
+  );
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.resistFingerprinting", true]],
+  });
+
+  tab3 = await BrowserTestUtils.openNewForegroundTab(gBrowser, PATH_NET);
+  tab3Zoom = ZoomManager.getZoomForBrowser(tab3.linkedBrowser);
+
+  isnot(
+    tab3Zoom,
+    tab1Zoom,
+    "privacy.resistFingerprinting is true, site-specific zoom level should be disabled"
+  );
+
+  await FullZoom.reset();
+
+  BrowserTestUtils.removeTab(tab1);
+  BrowserTestUtils.removeTab(tab2);
+  BrowserTestUtils.removeTab(tab3);
+
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function exempt_domain() {
+  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, PATH_NET);
+  await FullZoom.enlarge();
+  const netZoomOriginal = ZoomManager.getZoomForBrowser(tab.linkedBrowser);
+  is(netZoomOriginal, 1.1, "Initial zoom is 110%");
+  await BrowserTestUtils.removeTab(tab);
+
+  tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, PATH_ORG);
+  await FullZoom.enlarge();
+  const orgZoomOriginal = ZoomManager.getZoomForBrowser(tab.linkedBrowser);
+  is(orgZoomOriginal, 1.1, "Initial zoom is 110%");
+  await BrowserTestUtils.removeTab(tab);
+
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["privacy.resistFingerprinting.exemptedDomains", "example.net"],
+      ["privacy.resistFingerprinting", true],
+    ],
+  });
+
+  tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, PATH_NET);
+  const netZoom = ZoomManager.getZoomForBrowser(tab.linkedBrowser);
+  is(netZoom, 1.1, "exempted example.net tab should have kept zoom level");
+  await FullZoom.reset();
+  await BrowserTestUtils.removeTab(tab);
+
+  tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, PATH_ORG);
+  const orgZoom = ZoomManager.getZoomForBrowser(tab.linkedBrowser);
+  is(orgZoom, 1.0, "example.org tab has its zoom reset to default 100%");
+  await FullZoom.reset();
+  await BrowserTestUtils.removeTab(tab);
+
+  await SpecialPowers.popPrefEnv();
+});