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package martiantest
import (
"net/http"
"github.com/google/martian/proxyutil"
)
// Transport is an http.RoundTripper for testing.
type Transport struct {
rtfunc func(*http.Request) (*http.Response, error)
}
// NewTransport builds a new transport that will respond with a 200 OK
// response.
func NewTransport() *Transport {
tr := &Transport{}
tr.Respond(200)
return tr
}
// Respond sets the transport to respond with response with statusCode.
func (tr *Transport) Respond(statusCode int) {
tr.rtfunc = func(req *http.Request) (*http.Response, error) {
// Force CONNECT requests to 200 to test CONNECT with downstream proxy.
if req.Method == "CONNECT" {
statusCode = 200
}
res := proxyutil.NewResponse(statusCode, nil, req)
return res, nil
}
}
// RespondError sets the transport to respond with an error on round trip.
func (tr *Transport) RespondError(err error) {
tr.rtfunc = func(*http.Request) (*http.Response, error) {
return nil, err
}
}
// CopyHeaders sets the transport to respond with a 200 OK response with
// headers copied from the request to the response verbatim.
func (tr *Transport) CopyHeaders(names ...string) {
tr.rtfunc = func(req *http.Request) (*http.Response, error) {
res := proxyutil.NewResponse(200, nil, req)
for _, n := range names {
res.Header.Set(n, req.Header.Get(n))
}
return res, nil
}
}
// Func sets the transport to use the rtfunc.
func (tr *Transport) Func(rtfunc func(*http.Request) (*http.Response, error)) {
tr.rtfunc = rtfunc
}
// RoundTrip runs the stored round trip func and returns the response.
func (tr *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
return tr.rtfunc(req)
}
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