1 files changed, 86 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/api/cors/cors-preflight-star.any.js b/testing/web-platform/tests/fetch/api/cors/cors-preflight-star.any.js
new file mode 100644
index 0000000000..f9fb20469c
--- /dev/null
+++ b/testing/web-platform/tests/fetch/api/cors/cors-preflight-star.any.js
@@ -0,0 +1,86 @@
+// META: script=../resources/utils.js
+// META: script=/common/get-host-info.sub.js
+
+const url = get_host_info().HTTP_REMOTE_ORIGIN + dirname(location.pathname) + RESOURCES_DIR + "preflight.py",
+      origin = location.origin // assuming an ASCII origin
+
+function preflightTest(succeeds, withCredentials, allowMethod, allowHeader, useMethod, useHeader) {
+  return promise_test(t => {
+    let testURL = url + "?",
+        requestInit = {}
+    if (withCredentials) {
+      testURL += "origin=" + origin + "&"
+      testURL += "credentials&"
+      requestInit.credentials = "include"
+    }
+    if (useMethod) {
+      requestInit.method = useMethod
+    }
+    if (useHeader.length > 0) {
+      requestInit.headers = [useHeader]
+    }
+    testURL += "allow_methods=" + allowMethod + "&"
+    testURL += "allow_headers=" + allowHeader + "&"
+
+    if (succeeds) {
+      return fetch(testURL, requestInit).then(resp => {
+        assert_equals(resp.headers.get("x-origin"), origin)
+      })
+    } else {
+      return promise_rejects_js(t, TypeError, fetch(testURL, requestInit))
+    }
+  }, "CORS that " + (succeeds ? "succeeds" : "fails") + " with credentials: " + withCredentials + "; method: " + useMethod + " (allowed: " + allowMethod + "); header: " + useHeader + " (allowed: " + allowHeader + ")")
+}
+
+// "GET" does not pass the case-sensitive method check, but in the safe list.
+preflightTest(true, false, "get", "x-test", "GET", ["X-Test", "1"])
+// Headers check is case-insensitive, and "*" works as any for method.
+preflightTest(true, false, "*", "x-test", "SUPER", ["X-Test", "1"])
+// "*" works as any only without credentials.
+preflightTest(true, false, "*", "*", "OK", ["X-Test", "1"])
+preflightTest(false, true, "*", "*", "OK", ["X-Test", "1"])
+preflightTest(false, true, "*", "", "PUT", [])
+preflightTest(false, true, "get", "*", "GET", ["X-Test", "1"])
+preflightTest(false, true, "*", "*", "GET", ["X-Test", "1"])
+// Exact character match works even for "*" with credentials.
+preflightTest(true, true, "*", "*", "*", ["*", "1"])
+
+// The following methods are upper-cased for init["method"] by
+// https://fetch.spec.whatwg.org/#concept-method-normalize
+// but not in Access-Control-Allow-Methods response.
+// But they are https://fetch.spec.whatwg.org/#cors-safelisted-method,
+// CORS anyway passes regardless of the cases.
+for (const METHOD of ['GET', 'HEAD', 'POST']) {
+  const method = METHOD.toLowerCase();
+  preflightTest(true, true, METHOD, "*", METHOD, [])
+  preflightTest(true, true, METHOD, "*", method, [])
+  preflightTest(true, true, method, "*", METHOD, [])
+  preflightTest(true, true, method, "*", method, [])
+}
+
+// The following methods are upper-cased for init["method"] by
+// https://fetch.spec.whatwg.org/#concept-method-normalize
+// but not in Access-Control-Allow-Methods response.
+// As they are not https://fetch.spec.whatwg.org/#cors-safelisted-method,
+// Access-Control-Allow-Methods should contain upper-cased methods,
+// while init["method"] can be either in upper or lower case.
+for (const METHOD of ['DELETE', 'PUT']) {
+  const method = METHOD.toLowerCase();
+  preflightTest(true, true, METHOD, "*", METHOD, [])
+  preflightTest(true, true, METHOD, "*", method, [])
+  preflightTest(false, true, method, "*", METHOD, [])
+  preflightTest(false, true, method, "*", method, [])
+}
+
+// "PATCH" is NOT upper-cased in both places because it is not listed in
+// https://fetch.spec.whatwg.org/#concept-method-normalize.
+// So Access-Control-Allow-Methods value and init["method"] should match
+// case-sensitively.
+preflightTest(true, true, "PATCH", "*", "PATCH", [])
+preflightTest(false, true, "PATCH", "*", "patch", [])
+preflightTest(false, true, "patch", "*", "PATCH", [])
+preflightTest(true, true, "patch", "*", "patch", [])
+
+// "Authorization" header can't be wildcarded.
+preflightTest(false, false, "*", "*", "POST", ["Authorization", "123"])
+preflightTest(true, false, "*", "*, Authorization", "POST", ["Authorization", "123"])