1 files changed, 34 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/claim_worker_2.js b/dom/serviceworkers/test/claim_worker_2.js
new file mode 100644
index 0000000000..4293873da7
--- /dev/null
+++ b/dom/serviceworkers/test/claim_worker_2.js
@@ -0,0 +1,34 @@
+onactivate = function (e) {
+  var result = {
+    resolve_value: false,
+    match_count_before: -1,
+    match_count_after: -1,
+    message: "claim_worker_2",
+  };
+
+  self.clients
+    .matchAll()
+    .then(function (matched) {
+      // should be 0
+      result.match_count_before = matched.length;
+    })
+    .then(function () {
+      return clients.claim();
+    })
+    .then(function (ret) {
+      result.resolve_value = ret;
+      return clients.matchAll();
+    })
+    .then(function (matched) {
+      // should be 1
+      result.match_count_after = matched.length;
+      if (result.match_count_after === 1) {
+        matched[0].postMessage(result);
+      } else {
+        dump("ERROR: claim_worker_2 failed to capture clients.\n");
+        for (let i = 0; i < matched.length; ++i) {
+          dump("### ### matched[" + i + "]: " + matched[i].url + "\n");
+        }
+      }
+    });
+};