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/*
*
* Copyright 2020 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package testutils
import (
"context"
"net/http"
"time"
)
// DefaultHTTPRequestTimeout is the default timeout value for the amount of time
// this client waits for a response to be pushed on RespChan before it fails the
// Do() call.
const DefaultHTTPRequestTimeout = 1 * time.Second
// FakeHTTPClient helps mock out HTTP calls made by the code under test. It
// makes HTTP requests made by the code under test available through a channel,
// and makes it possible to inject various responses.
type FakeHTTPClient struct {
// ReqChan exposes the HTTP.Request made by the code under test.
ReqChan *Channel
// RespChan is a channel on which this fake client accepts responses to be
// sent to the code under test.
RespChan *Channel
// Err, if set, is returned by Do().
Err error
// RecvTimeout is the amount of the time this client waits for a response to
// be pushed on RespChan before it fails the Do() call. If this field is
// left unspecified, DefaultHTTPRequestTimeout is used.
RecvTimeout time.Duration
}
// Do pushes req on ReqChan and returns the response available on RespChan.
func (fc *FakeHTTPClient) Do(req *http.Request) (*http.Response, error) {
fc.ReqChan.Send(req)
timeout := fc.RecvTimeout
if timeout == 0 {
timeout = DefaultHTTPRequestTimeout
}
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
val, err := fc.RespChan.Receive(ctx)
if err != nil {
return nil, err
}
return val.(*http.Response), fc.Err
}
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