Gotta commit those moved files

internal/testhelper/testhelper.go

+package testhelper
+
+import (
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"regexp"
+	"testing"
+)
+
+func AssertResponseCode(t *testing.T, response *httptest.ResponseRecorder, expectedCode int) {
+	if response.Code != expectedCode {
+		t.Fatalf("for HTTP request expected to get %d, got %d instead", expectedCode, response.Code)
+	}
+}
+
+func AssertResponseBody(t *testing.T, response *httptest.ResponseRecorder, expectedBody string) {
+	if response.Body.String() != expectedBody {
+		t.Fatalf("for HTTP request expected to receive %q, got %q instead as body", expectedBody, response.Body.String())
+	}
+}
+
+func AssertResponseHeader(t *testing.T, response *httptest.ResponseRecorder, header string, expectedValue string) {
+	if response.Header().Get(header) != expectedValue {
+		t.Fatalf("for HTTP request expected to receive the header %q with %q, got %q", header, expectedValue, response.Header().Get(header))
+	}
+}
+
+func TestServerWithHandler(url *regexp.Regexp, handler http.HandlerFunc) *httptest.Server {
+	return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if url != nil && !url.MatchString(r.URL.Path) {
+			log.Println("UPSTREAM", r.Method, r.URL, "DENY")
+			w.WriteHeader(404)
+			return
+		}
+
+		if version := r.Header.Get("Gitlab-Workhorse"); version == "" {
+			log.Println("UPSTREAM", r.Method, r.URL, "DENY")
+			w.WriteHeader(403)
+			return
+		}
+
+		handler(w, r)
+	}))
+}