text: // META: global=window,worker
  // META: title=Request consume empty bodies
  
  function checkBodyText(test, request) {
    return request.text().then(function(bodyAsText) {
      assert_equals(bodyAsText, "", "Resolved value should be empty");
      assert_false(request.bodyUsed);
    });
  }
  
  function checkBodyBlob(test, request) {
    return request.blob().then(function(bodyAsBlob) {
      var promise = new Promise(function(resolve, reject) {
        var reader = new FileReader();
        reader.onload = function(evt) {
          resolve(reader.result)
        };
        reader.onerror = function() {
          reject("Blob's reader failed");
        };
        reader.readAsText(bodyAsBlob);
      });
      return promise.then(function(body) {
        assert_equals(body, "", "Resolved value should be empty");
        assert_false(request.bodyUsed);
      });
    });
  }
  
  function checkBodyArrayBuffer(test, request) {
    return request.arrayBuffer().then(function(bodyAsArrayBuffer) {
      assert_equals(bodyAsArrayBuffer.byteLength, 0, "Resolved value should be empty");
      assert_false(request.bodyUsed);
    });
  }
  
  function checkBodyJSON(test, request) {
    return request.json().then(
      function(bodyAsJSON) {
        assert_unreached("JSON parsing should fail");
      },
      function() {
        assert_false(request.bodyUsed);
      });
  }
  
  function checkBodyFormData(test, request) {
    return request.formData().then(function(bodyAsFormData) {
      assert_true(bodyAsFormData instanceof FormData, "Should receive a FormData");
      assert_false(request.bodyUsed);
    });
  }
  
  function checkBodyFormDataError(test, request) {
    return promise_rejects_js(test, TypeError, request.formData()).then(function() {
      assert_false(request.bodyUsed);
    });
  }
  
  function checkRequestWithNoBody(bodyType, checkFunction, headers = []) {
    promise_test(function(test) {
      var request = new Request("", {"method": "POST", "headers": headers});
      assert_false(request.bodyUsed);
      return checkFunction(test, request);
    }, "Consume request's body as " + bodyType);
  }
  
  checkRequestWithNoBody("text", checkBodyText);
  checkRequestWithNoBody("blob", checkBodyBlob);
  checkRequestWithNoBody("arrayBuffer", checkBodyArrayBuffer);
  checkRequestWithNoBody("json (error case)", checkBodyJSON);
  checkRequestWithNoBody("formData with correct multipart type (error case)", checkBodyFormDataError, [["Content-Type", 'multipart/form-data; boundary="boundary"']]);
  checkRequestWithNoBody("formData with correct urlencoded type", checkBodyFormData, [["Content-Type", "application/x-www-form-urlencoded;charset=UTF-8"]]);
  checkRequestWithNoBody("formData without correct type (error case)", checkBodyFormDataError);
  
  function checkRequestWithEmptyBody(bodyType, body, asText) {
    promise_test(function(test) {
      var request = new Request("", {"method": "POST", "body": body});
      assert_false(request.bodyUsed, "bodyUsed is false at init");
      if (asText) {
        return request.text().then(function(bodyAsString) {
          assert_equals(bodyAsString.length, 0, "Resolved value should be empty");
          assert_true(request.bodyUsed, "bodyUsed is true after being consumed");
        });
      }
      return request.arrayBuffer().then(function(bodyAsArrayBuffer) {
        assert_equals(bodyAsArrayBuffer.byteLength, 0, "Resolved value should be empty");
        assert_true(request.bodyUsed, "bodyUsed is true after being consumed");
      });
    }, "Consume empty " + bodyType + " request body as " + (asText ? "text" : "arrayBuffer"));
  }
  
  // FIXME: Add BufferSource, FormData and URLSearchParams.
  checkRequestWithEmptyBody("blob", new Blob([], { "type" : "text/plain" }), false);
  checkRequestWithEmptyBody("text", "", false);
  checkRequestWithEmptyBody("blob", new Blob([], { "type" : "text/plain" }), true);
  checkRequestWithEmptyBody("text", "", true);
  checkRequestWithEmptyBody("URLSearchParams", new URLSearchParams(""), true);
  // FIXME: This test assumes that the empty string be returned but it is not clear whether that is right. See https://github.com/web-platform-tests/wpt/pull/3950.
  checkRequestWithEmptyBody("FormData", new FormData(), true);
  checkRequestWithEmptyBody("ArrayBuffer", new ArrayBuffer(), true);
  