send_test.go

Documentation: google.golang.org/api/internal/gensupport

     1  // Copyright 2017 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package gensupport
     6  
     7  import (
     8  	"context"
     9  	"errors"
    10  	"fmt"
    11  	"net/http"
    12  	"testing"
    13  
    14  	"github.com/google/go-cmp/cmp"
    15  	"github.com/googleapis/gax-go/v2/callctx"
    16  )
    17  
    18  func TestSendRequest(t *testing.T) {
    19  	// Setting Accept-Encoding should give an error immediately.
    20  	req, _ := http.NewRequest("GET", "url", nil)
    21  	req.Header.Set("Accept-Encoding", "")
    22  	_, err := SendRequest(context.Background(), nil, req)
    23  	if err == nil {
    24  		t.Error("got nil, want error")
    25  	}
    26  }
    27  
    28  func TestSendRequestWithRetry(t *testing.T) {
    29  	// Setting Accept-Encoding should give an error immediately.
    30  	req, _ := http.NewRequest("GET", "url", nil)
    31  	req.Header.Set("Accept-Encoding", "")
    32  	_, err := SendRequestWithRetry(context.Background(), nil, req, nil)
    33  	if err == nil {
    34  		t.Error("got nil, want error")
    35  	}
    36  }
    37  
    38  type headerRoundTripper struct {
    39  	wantHeader http.Header
    40  }
    41  
    42  func (rt *headerRoundTripper) RoundTrip(r *http.Request) (*http.Response, error) {
    43  	// Ignore x-goog headers sent by SendRequestWithRetry
    44  	r.Header.Del("X-Goog-Api-Client")
    45  	r.Header.Del("X-Goog-Gcs-Idempotency-Token")
    46  	if diff := cmp.Diff(r.Header, rt.wantHeader); diff != "" {
    47  		return nil, fmt.Errorf("headers don't match: %v", diff)
    48  	}
    49  	return &http.Response{StatusCode: 200}, nil
    50  }
    51  
    52  // Ensure that headers set via the context are passed through to the request as expected.
    53  func TestSendRequestHeader(t *testing.T) {
    54  	ctx := context.Background()
    55  	ctx = callctx.SetHeaders(ctx, "foo", "100", "bar", "200")
    56  	client := http.Client{
    57  		Transport: &headerRoundTripper{
    58  			wantHeader: map[string][]string{"Foo": {"100"}, "Bar": {"200"}},
    59  		},
    60  	}
    61  	req, _ := http.NewRequest("GET", "url", nil)
    62  	if _, err := SendRequest(ctx, &client, req); err != nil {
    63  		t.Errorf("SendRequest: %v", err)
    64  	}
    65  	req2, _ := http.NewRequest("GET", "url", nil)
    66  	if _, err := SendRequestWithRetry(ctx, &client, req2, nil); err != nil {
    67  		t.Errorf("SendRequest: %v", err)
    68  	}
    69  }
    70  
    71  type brokenRoundTripper struct{}
    72  
    73  func (t *brokenRoundTripper) RoundTrip(r *http.Request) (*http.Response, error) {
    74  	return nil, errors.New("this should not happen")
    75  }
    76  
    77  func TestCanceledContextDoesNotPerformRequest(t *testing.T) {
    78  	client := http.Client{
    79  		Transport: &brokenRoundTripper{},
    80  	}
    81  	for i := 0; i < 1000; i++ {
    82  		req, _ := http.NewRequest("GET", "url", nil)
    83  		ctx, cancel := context.WithCancel(context.Background())
    84  		cancel()
    85  		_, err := SendRequestWithRetry(ctx, &client, req, nil)
    86  		if !errors.Is(err, context.Canceled) {
    87  			t.Fatalf("got %v, want %v", err, context.Canceled)
    88  		}
    89  	}
    90  }
    91
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