snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

internal/testutils/http_client.go

@@ -0,0 +1,63 @@
+/*
+ *
+ * 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
+}