1 files changed, 61 insertions, 0 deletions
diff --git a/browser/base/content/test/plugins/browser_CTP_zoom.js b/browser/base/content/test/plugins/browser_CTP_zoom.js
new file mode 100644
index 0000000000..eee2ec1837
--- /dev/null
+++ b/browser/base/content/test/plugins/browser_CTP_zoom.js
@@ -0,0 +1,61 @@
+"use strict";
+
+var rootDir = getRootDirectory(gTestPath);
+const gTestRoot = rootDir.replace(
+  "chrome://mochitests/content/",
+  "http://127.0.0.1:8888/"
+);
+
+var gTestBrowser = null;
+
+add_task(async function() {
+  registerCleanupFunction(function() {
+    clearAllPluginPermissions();
+    Services.prefs.clearUserPref("extensions.blocklist.suppressUI");
+    FullZoom.reset(); // must be called before closing the tab we zoomed!
+    gBrowser.removeCurrentTab();
+    window.focus();
+    gTestBrowser = null;
+  });
+});
+
+add_task(async function() {
+  Services.prefs.setBoolPref("extensions.blocklist.suppressUI", true);
+
+  gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser);
+  gTestBrowser = gBrowser.selectedBrowser;
+
+  await promiseTabLoadEvent(
+    gBrowser.selectedTab,
+    gTestRoot + "plugin_zoom.html"
+  );
+
+  // Work around for delayed PluginBindingAttached
+  await promiseUpdatePluginBindings(gTestBrowser);
+});
+
+// Enlarges the zoom level 4 times and tests that the overlay is
+// visible after each enlargement.
+add_task(async function() {
+  for (let count = 0; count < 4; count++) {
+    FullZoom.enlarge();
+
+    // Reload the page
+    await promiseTabLoadEvent(
+      gBrowser.selectedTab,
+      gTestRoot + "plugin_zoom.html"
+    );
+    await promiseUpdatePluginBindings(gTestBrowser);
+    await SpecialPowers.spawn(gTestBrowser, [{ count }], async function(args) {
+      let doc = content.document;
+      let plugin = doc.getElementById("test");
+      let overlay = plugin.openOrClosedShadowRoot.getElementById("main");
+      Assert.ok(
+        overlay &&
+          !overlay.classList.contains("visible") &&
+          overlay.getAttribute("blockall") == "blockall",
+        "Overlay should be present for zoom change count " + args.count
+      );
+    });
+  }
+});