github.com/google/martian/v3@v3.3.3/martiantest/transport_test.go (about)

     1  package martiantest
     2  
     3  import (
     4  	"errors"
     5  	"net/http"
     6  	"testing"
     7  
     8  	"github.com/google/martian/v3/proxyutil"
     9  )
    10  
    11  func TestTransport(t *testing.T) {
    12  	req, err := http.NewRequest("GET", "http://example.com", nil)
    13  	if err != nil {
    14  		t.Fatalf("http.NewRequest(): got %v, want no error", err)
    15  	}
    16  
    17  	tr := NewTransport()
    18  
    19  	res, err := tr.RoundTrip(req)
    20  	if err != nil {
    21  		t.Fatalf("tr.Roundtrip(): got %v, want no error", err)
    22  	}
    23  	res.Body.Close()
    24  
    25  	if got, want := res.StatusCode, 200; got != want {
    26  		t.Errorf("res.StatusCode: got %d, want %d", got, want)
    27  	}
    28  
    29  	// Respond with 301 response.
    30  	tr.Respond(301)
    31  	res, err = tr.RoundTrip(req)
    32  	if err != nil {
    33  		t.Fatalf("tr.Roundtrip(): got %v, want no error", err)
    34  	}
    35  	res.Body.Close()
    36  
    37  	if got, want := res.StatusCode, 301; got != want {
    38  		t.Errorf("res.StatusCode: got %d, want %d", got, want)
    39  	}
    40  
    41  	// Respond with error.
    42  	trerr := errors.New("transport error")
    43  	tr.RespondError(trerr)
    44  
    45  	if _, err := tr.RoundTrip(req); err != trerr {
    46  		t.Fatalf("tr.Roundtrip(): got %v, want %v", err, trerr)
    47  	}
    48  
    49  	// Copy headers from request to response.
    50  	req.Header.Set("First-Header", "first")
    51  	req.Header.Set("Second-Header", "second")
    52  
    53  	tr.CopyHeaders("First-Header", "Second-Header")
    54  
    55  	res, err = tr.RoundTrip(req)
    56  	if err != nil {
    57  		t.Fatalf("tr.Roundtrip(): got %v, want no error", err)
    58  	}
    59  	res.Body.Close()
    60  
    61  	if got, want := res.StatusCode, 200; got != want {
    62  		t.Errorf("res.StatusCode: got %d, want %d", got, want)
    63  	}
    64  	if got, want := res.Header.Get("First-Header"), "first"; got != want {
    65  		t.Errorf("res.Header.Get(%q): got %q, want %q", "First-Header", got, want)
    66  	}
    67  	if got, want := res.Header.Get("Second-Header"), "second"; got != want {
    68  		t.Errorf("res.Header.Get(%q): got %q, want %q", "Second-Header", got, want)
    69  	}
    70  
    71  	// Custom round trip function.
    72  	tr.Func(func(req *http.Request) (*http.Response, error) {
    73  		res := proxyutil.NewResponse(200, nil, req)
    74  		res.Header.Set("Request-Method", req.Method)
    75  
    76  		return res, nil
    77  	})
    78  
    79  	res, err = tr.RoundTrip(req)
    80  	if err != nil {
    81  		t.Fatalf("tr.Roundtrip(): got %v, want no error", err)
    82  	}
    83  	res.Body.Close()
    84  
    85  	if got, want := res.StatusCode, 200; got != want {
    86  		t.Errorf("res.StatusCode: got %d, want %d", got, want)
    87  	}
    88  	if got, want := res.Header.Get("Request-Method"), "GET"; got != want {
    89  		t.Errorf("res.Header.Get(%q): got %q, want %q", "Request-Method", got, want)
    90  	}
    91  }