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package httprp_test
import (
"context"
"io/ioutil"
"net/http"
"net/http/httptest"
"net/url"
"testing"
httptransport "github.com/go-kit/kit/transport/httprp"
)
func TestServerHappyPathSingleServer(t *testing.T) {
originServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
w.Write([]byte("hey"))
}))
defer originServer.Close()
originURL, _ := url.Parse(originServer.URL)
handler := httptransport.NewServer(
originURL,
)
proxyServer := httptest.NewServer(handler)
defer proxyServer.Close()
resp, _ := http.Get(proxyServer.URL)
if want, have := http.StatusOK, resp.StatusCode; want != have {
t.Errorf("want %d, have %d", want, have)
}
responseBody, _ := ioutil.ReadAll(resp.Body)
if want, have := "hey", string(responseBody); want != have {
t.Errorf("want %q, have %q", want, have)
}
}
func TestServerHappyPathSingleServerWithServerOptions(t *testing.T) {
const (
headerKey = "X-TEST-HEADER"
headerVal = "go-kit-proxy"
)
originServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if want, have := headerVal, r.Header.Get(headerKey); want != have {
t.Errorf("want %q, have %q", want, have)
}
w.WriteHeader(http.StatusOK)
w.Write([]byte("hey"))
}))
defer originServer.Close()
originURL, _ := url.Parse(originServer.URL)
handler := httptransport.NewServer(
originURL,
httptransport.ServerBefore(func(ctx context.Context, r *http.Request) context.Context {
r.Header.Add(headerKey, headerVal)
return ctx
}),
)
proxyServer := httptest.NewServer(handler)
defer proxyServer.Close()
resp, _ := http.Get(proxyServer.URL)
if want, have := http.StatusOK, resp.StatusCode; want != have {
t.Errorf("want %d, have %d", want, have)
}
responseBody, _ := ioutil.ReadAll(resp.Body)
if want, have := "hey", string(responseBody); want != have {
t.Errorf("want %q, have %q", want, have)
}
}
func TestServerOriginServerNotFoundResponse(t *testing.T) {
originServer := httptest.NewServer(http.NotFoundHandler())
defer originServer.Close()
originURL, _ := url.Parse(originServer.URL)
handler := httptransport.NewServer(
originURL,
)
proxyServer := httptest.NewServer(handler)
defer proxyServer.Close()
resp, _ := http.Get(proxyServer.URL)
if want, have := http.StatusNotFound, resp.StatusCode; want != have {
t.Errorf("want %d, have %d", want, have)
}
}
func TestServerOriginServerUnreachable(t *testing.T) {
// create a server, then promptly shut it down
originServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
}))
originURL, _ := url.Parse(originServer.URL)
originServer.Close()
handler := httptransport.NewServer(
originURL,
)
proxyServer := httptest.NewServer(handler)
defer proxyServer.Close()
resp, _ := http.Get(proxyServer.URL)
switch resp.StatusCode {
case http.StatusBadGateway: // go1.7 and beyond
break
case http.StatusInternalServerError: // to go1.7
break
default:
t.Errorf("want %d or %d, have %d", http.StatusBadGateway, http.StatusInternalServerError, resp.StatusCode)
}
}
func TestMultipleServerBefore(t *testing.T) {
const (
headerKey = "X-TEST-HEADER"
headerVal = "go-kit-proxy"
)
originServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if want, have := headerVal, r.Header.Get(headerKey); want != have {
t.Errorf("want %q, have %q", want, have)
}
w.WriteHeader(http.StatusOK)
w.Write([]byte("hey"))
}))
defer originServer.Close()
originURL, _ := url.Parse(originServer.URL)
handler := httptransport.NewServer(
originURL,
httptransport.ServerBefore(func(ctx context.Context, r *http.Request) context.Context {
r.Header.Add(headerKey, headerVal)
return ctx
}),
httptransport.ServerBefore(func(ctx context.Context, r *http.Request) context.Context {
return ctx
}),
)
proxyServer := httptest.NewServer(handler)
defer proxyServer.Close()
resp, _ := http.Get(proxyServer.URL)
if want, have := http.StatusOK, resp.StatusCode; want != have {
t.Errorf("want %d, have %d", want, have)
}
responseBody, _ := ioutil.ReadAll(resp.Body)
if want, have := "hey", string(responseBody); want != have {
t.Errorf("want %q, have %q", want, have)
}
}
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