Bug 1444166 [wpt PR 9931] - Add used body replacement test for Reques…

…t constructor, a=testonly

Automatic update from web-platform-testsFetch: add used body replacement test for Request constructor

See Fetch change whatwg/fetch#675.

Specifically, that PR allows Requests with disturbed bodies to be used as the first parameter to the Request constructor, as long as the RequestInit dictionary contains a body member with which to replace the used body.

As of this writing, no browser implements this change.

wpt-commits: e87f38097902e16348d4e17f4fe3bc2d0112bff1
wpt-pr: 9931
wpt-commits: e87f38097902e16348d4e17f4fe3bc2d0112bff1
wpt-pr: 9931

testing/web-platform/meta/MANIFEST.json

@@ -550837,7 +550837,7 @@
    "testharness"
   ],
   "fetch/api/request/request-disturbed.html": [
-   "47a1771e5ce32b63cf4b378a87c5d53ee486c246",
+   "62d53aaa3cefd7f76f315ab3f3aa1cd5d5a4e4a0",
    "testharness"
   ],
   "fetch/api/request/request-error.html": [

testing/web-platform/tests/fetch/api/request/request-disturbed.html

@@ -48,6 +48,17 @@
         assert_throws(new TypeError(), function() { new Request(bodyConsumed); });
       }, "Check creating a new request from a disturbed request");
 
+      promise_test(function() {
+        assert_true(bodyConsumed.bodyUsed , "bodyUsed is true when request is disturbed");
+        const originalBody = bodyConsumed.body;
+        const bodyReplaced = new Request(bodyConsumed, { body: "Replaced body" });
+        assert_not_equals(bodyReplaced.body, originalBody, "new request's body is new");
+        assert_false(bodyReplaced.bodyUsed, "bodyUsed is false when request is not disturbed");
+        return bodyReplaced.text().then(text => {
+          assert_equals(text, "Replaced body");
+        });
+      }, "Check creating a new request with a new body from a disturbed request");
+
       promise_test(function() {
         var bodyRequest = new Request("", initValuesDict);
         const originalBody = bodyRequest.body;
@@ -58,7 +69,7 @@
         assert_not_equals(originalBody, undefined, "body should not be undefined");
         assert_not_equals(originalBody, null, "body should not be null");
         assert_not_equals(requestFromRequest.body, originalBody, "new request's body is new");
-        return requestFromRequest.text(text => {
+        return requestFromRequest.text().then(text => {
           assert_equals(text, "Request's body");
         });
       }, "Input request used for creating new request became disturbed");
@@ -74,7 +85,7 @@
         assert_not_equals(originalBody, null, "body should not be null");
         assert_not_equals(requestFromRequest.body, originalBody, "new request's body is new");
 
-        return requestFromRequest.text(text => {
+        return requestFromRequest.text().then(text => {
           assert_equals(text, "init body");
         });
       }, "Input request used for creating new request became disturbed even if body is not used");