1 files changed, 90 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/test/browser/browser_blockingSharedWorkers.js b/toolkit/components/antitracking/test/browser/browser_blockingSharedWorkers.js
new file mode 100644
index 0000000000..bb405b8701
--- /dev/null
+++ b/toolkit/components/antitracking/test/browser/browser_blockingSharedWorkers.js
@@ -0,0 +1,90 @@
+/* import-globals-from antitracking_head.js */
+
+requestLongerTimeout(4);
+
+AntiTracking.runTestInNormalAndPrivateMode(
+  "SharedWorkers",
+  async _ => {
+    try {
+      new SharedWorker("a.js", "foo");
+      ok(false, "SharedWorker cannot be used!");
+    } catch (e) {
+      ok(true, "SharedWorker cannot be used!");
+      is(e.name, "SecurityError", "We want a security error message.");
+    }
+  },
+  async _ => {
+    new SharedWorker("a.js", "foo");
+    ok(true, "SharedWorker is allowed");
+  },
+  async _ => {
+    await new Promise(resolve => {
+      Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value =>
+        resolve()
+      );
+    });
+  }
+);
+
+AntiTracking.runTestInNormalAndPrivateMode(
+  "SharedWorkers and Storage Access API",
+  async _ => {
+    /* import-globals-from storageAccessAPIHelpers.js */
+    await noStorageAccessInitially();
+
+    try {
+      new SharedWorker("a.js", "foo");
+      ok(false, "SharedWorker cannot be used!");
+    } catch (e) {
+      ok(true, "SharedWorker cannot be used!");
+      is(e.name, "SecurityError", "We want a security error message.");
+    }
+
+    /* import-globals-from storageAccessAPIHelpers.js */
+    await callRequestStorageAccess();
+
+    if (
+      [
+        SpecialPowers.Ci.nsICookieService.BEHAVIOR_REJECT,
+        SpecialPowers.Ci.nsICookieService.BEHAVIOR_REJECT_FOREIGN,
+      ].includes(
+        SpecialPowers.Services.prefs.getIntPref("network.cookie.cookieBehavior")
+      )
+    ) {
+      try {
+        new SharedWorker("a.js", "foo");
+        ok(false, "SharedWorker cannot be used!");
+      } catch (e) {
+        ok(true, "SharedWorker cannot be used!");
+        is(e.name, "SecurityError", "We want a security error message.");
+      }
+    } else {
+      new SharedWorker("a.js", "foo");
+      ok(true, "SharedWorker is allowed");
+    }
+  },
+  async _ => {
+    /* import-globals-from storageAccessAPIHelpers.js */
+    await hasStorageAccessInitially();
+
+    new SharedWorker("a.js", "foo");
+    ok(true, "SharedWorker is allowed");
+
+    /* import-globals-from storageAccessAPIHelpers.js */
+    await callRequestStorageAccess();
+
+    // For non-tracking windows, calling the API is a no-op
+    new SharedWorker("a.js", "bar");
+    ok(true, "SharedWorker is allowed");
+  },
+  async _ => {
+    await new Promise(resolve => {
+      Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value =>
+        resolve()
+      );
+    });
+  },
+  null,
+  false,
+  false
+);