distribution/routes_test.go

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package registry
import (
"encoding/json"
"net/http"
"net/http/httptest"
"reflect"
"testing"
"github.com/gorilla/mux"
)
type routeInfo struct {
RequestURI string
Vars map[string]string
}
// TestRouter registers a test handler with all the routes and ensures that
// each route returns the expected path variables. Not method verification is
// present. This not meant to be exhaustive but as check to ensure that the
// expected variables are extracted.
//
// This may go away as the application structure comes together.
func TestRouter(t *testing.T) {
router := v2APIRouter()
testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
routeInfo := routeInfo{
RequestURI: r.RequestURI,
Vars: mux.Vars(r),
}
enc := json.NewEncoder(w)
if err := enc.Encode(routeInfo); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
})
// Startup test server
server := httptest.NewServer(router)
for _, testcase := range []struct {
routeName string
expectedRouteInfo routeInfo
}{
{
routeName: routeNameImageManifest,
expectedRouteInfo: routeInfo{
RequestURI: "/v2/foo/bar/image/tag",
Vars: map[string]string{
"name": "foo/bar",
"tag": "tag",
},
},
},
{
routeName: routeNameTags,
expectedRouteInfo: routeInfo{
RequestURI: "/v2/foo/bar/tags",
Vars: map[string]string{
"name": "foo/bar",
},
},
},
{
routeName: routeNameLayer,
expectedRouteInfo: routeInfo{
RequestURI: "/v2/foo/bar/layer/tarsum",
Vars: map[string]string{
"name": "foo/bar",
"tarsum": "tarsum",
},
},
},
{
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routeName: routeNameLayerUpload,
expectedRouteInfo: routeInfo{
RequestURI: "/v2/foo/bar/layer/tarsum/upload/",
Vars: map[string]string{
"name": "foo/bar",
"tarsum": "tarsum",
},
},
},
{
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routeName: routeNameLayerUploadResume,
expectedRouteInfo: routeInfo{
RequestURI: "/v2/foo/bar/layer/tarsum/upload/uuid",
Vars: map[string]string{
"name": "foo/bar",
"tarsum": "tarsum",
"uuid": "uuid",
},
},
},
} {
// Register the endpoint
router.GetRoute(testcase.routeName).Handler(testHandler)
u := server.URL + testcase.expectedRouteInfo.RequestURI
resp, err := http.Get(u)
if err != nil {
t.Fatalf("error issuing get request: %v", err)
}
dec := json.NewDecoder(resp.Body)
var actualRouteInfo routeInfo
if err := dec.Decode(&actualRouteInfo); err != nil {
t.Fatalf("error reading json response: %v", err)
}
if !reflect.DeepEqual(actualRouteInfo, testcase.expectedRouteInfo) {
t.Fatalf("actual does not equal expected: %v != %v", actualRouteInfo, testcase.expectedRouteInfo)
}
}
}