1 files changed, 78 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/test/browser/imageCacheWorker.js b/toolkit/components/antitracking/test/browser/imageCacheWorker.js
new file mode 100644
index 0000000000..d11221112c
--- /dev/null
+++ b/toolkit/components/antitracking/test/browser/imageCacheWorker.js
@@ -0,0 +1,78 @@
+/* import-globals-from head.js */
+/* import-globals-from antitracking_head.js */
+/* import-globals-from browser_imageCache4.js */
+
+AntiTracking.runTest(
+  "Image cache - should load the image three times.",
+  // blocking callback
+  async _ => {
+    // Let's load the image twice here.
+    let img = document.createElement("img");
+    document.body.appendChild(img);
+    img.src =
+      "https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/image.sjs";
+    await new Promise(resolve => {
+      img.onload = resolve;
+    });
+    ok(true, "Image 1 loaded");
+
+    img = document.createElement("img");
+    document.body.appendChild(img);
+    img.src =
+      "https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/image.sjs";
+    await new Promise(resolve => {
+      img.onload = resolve;
+    });
+    ok(true, "Image 2 loaded");
+  },
+
+  // non-blocking callback
+  {
+    runExtraTests: false,
+    cookieBehavior,
+    blockingByAllowList,
+    expectedBlockingNotifications,
+    callback: async _ => {
+      // Let's load the image twice here as well.
+      let img = document.createElement("img");
+      document.body.appendChild(img);
+      img.src =
+        "https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/image.sjs";
+      await new Promise(resolve => {
+        img.onload = resolve;
+      });
+      ok(true, "Image 3 loaded");
+
+      img = document.createElement("img");
+      document.body.appendChild(img);
+      img.src =
+        "https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/image.sjs";
+      await new Promise(resolve => {
+        img.onload = resolve;
+      });
+      ok(true, "Image 4 loaded");
+    },
+  },
+  null, // cleanup function
+  null, // no extra prefs
+  false, // no window open test
+  false, // no user-interaction test
+  expectedBlockingNotifications
+);
+
+// We still want to see just expected requests.
+add_task(async _ => {
+  await fetch(
+    "https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/image.sjs?result"
+  )
+    .then(r => r.text())
+    .then(text => {
+      is(text, "2", "The image should be loaded correctly.");
+    });
+
+  await new Promise(resolve => {
+    Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value =>
+      resolve()
+    );
+  });
+});