1 files changed, 18 insertions, 0 deletions
diff --git a/testing/web-platform/tests/web-locks/query-empty.tentative.https.any.js b/testing/web-platform/tests/web-locks/query-empty.tentative.https.any.js
new file mode 100644
index 0000000000..88ffdb7f81
--- /dev/null
+++ b/testing/web-platform/tests/web-locks/query-empty.tentative.https.any.js
@@ -0,0 +1,18 @@
+// META: title=Web Locks API: navigator.locks.query method - no locks held
+// META: script=resources/helpers.js
+// META: global=window,dedicatedworker,sharedworker,serviceworker
+
+'use strict';
+
+promise_test(async t => {
+  const state = await navigator.locks.query();
+
+  assert_own_property(state, 'pending', 'State has `pending` property');
+  assert_true(Array.isArray(state.pending),
+              'State `pending` property is an array');
+  assert_array_equals(state.pending, [], 'Pending array is empty');
+
+  assert_own_property(state, 'held', 'State has `held` property');
+  assert_true(Array.isArray(state.held), 'State `held` property is an array');
+  assert_array_equals(state.held, [], 'Held array is empty');
+}, 'query() returns dictionary with empty arrays when no locks are held');