1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/xhr/access-control-basic-allow-preflight-cache.any.js b/testing/web-platform/tests/xhr/access-control-basic-allow-preflight-cache.any.js
new file mode 100644
index 0000000000..0bdf955ad5
--- /dev/null
+++ b/testing/web-platform/tests/xhr/access-control-basic-allow-preflight-cache.any.js
@@ -0,0 +1,35 @@
+// META: title=Preflight cache should allow second request without preflight OPTIONS request
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+
+    const uuid = token();
+
+    async_test(function(test) {
+      const xhr = new XMLHttpRequest;
+      xhr.onerror = test.unreached_func("FAIL: Network error.");
+      xhr.onload = test.step_func(function() {
+        // Token reset.  We can start the test now.
+        assert_equals(xhr.responseText, "PASS");
+        firstRequest();
+      });
+
+      xhr.open("GET", get_host_info().HTTP_REMOTE_ORIGIN + "/xhr/resources/reset-token.py?token=" + uuid, true);
+      xhr.send();
+
+      function firstRequest() {
+        xhr.onload = test.step_func(function() {
+          assert_equals(xhr.responseText, "PASS: First PUT request.");
+          secondRequest();
+        });
+        xhr.open("PUT", get_host_info().HTTP_REMOTE_ORIGIN + "/xhr/resources/access-control-basic-preflight-cache.py?token=" + uuid, true);
+        xhr.send();
+      }
+
+      function secondRequest() {
+        xhr.onload = test.step_func_done(function() {
+          assert_equals(xhr.responseText, "PASS: Second PUT request. Preflight worked.");
+        });
+        xhr.open("PUT", get_host_info().HTTP_REMOTE_ORIGIN + "/xhr/resources/access-control-basic-preflight-cache.py?token=" + uuid, true);
+        xhr.send();
+      }
+    }, "Preflight cache should allow second request");