Add the controversial gorillize()

Co-authored-by: Roberto Abdelkader Martínez Pérez <robertomartinezp@gmail.com>

internal/server/user/mux/gorillize.go

@@ -0,0 +1,18 @@
+package mux
+
+import (
+	"net/http"
+
+	"github.com/BBVA/kapow/internal/server/model"
+	"github.com/gorilla/mux"
+)
+
+func gorillize(rs []model.Route, f func(*model.Handler) http.Handler) *mux.Router {
+	m := mux.NewRouter()
+
+	for _, r := range rs {
+		m.Handle(r.Pattern, f(nil)).Methods(r.Method)
+	}
+
+	return m
+}

internal/server/user/mux/gorillize_test.go

@@ -0,0 +1,106 @@
+package mux
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"reflect"
+	"testing"
+
+	"github.com/BBVA/kapow/internal/server/model"
+	"github.com/gorilla/mux"
+)
+
+func handlerStatusOK(h *model.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	})
+}
+
+func TestGorillizeReturnsAnEmptyMuxWhenAnEmptyRouteList(t *testing.T) {
+	m := gorillize([]model.Route{}, handlerStatusOK)
+
+	if !reflect.DeepEqual(*m, *mux.NewRouter()) {
+		t.Error("Returned mux not empty")
+	}
+}
+
+func TestGorillizeReturnsAMuxThat404sWhenEmptyRouteList(t *testing.T) {
+	m := *gorillize([]model.Route{}, handlerStatusOK)
+
+	req := httptest.NewRequest("GET", "/", nil)
+	w := httptest.NewRecorder()
+
+	m.ServeHTTP(w, req)
+
+	res := w.Result()
+
+	if res.StatusCode != http.StatusNotFound {
+		t.Errorf("status mismatch, got %d, want 404", res.StatusCode)
+	}
+
+}
+
+func TestGorillizeReturnsAMuxThatMatchesByRoute(t *testing.T) {
+	var rs []model.Route
+	rs = append(rs, model.Route{
+		Pattern: "/foo",
+		Method:  "GET",
+	})
+
+	m := *gorillize(rs, handlerStatusOK)
+
+	req := httptest.NewRequest("GET", "/foo", nil)
+	w := httptest.NewRecorder()
+
+	m.ServeHTTP(w, req)
+
+	res := w.Result()
+
+	if res.StatusCode != http.StatusOK {
+		t.Errorf("status mismatch, got %d, want 200", res.StatusCode)
+	}
+}
+
+func TestGorillizeReturnsAMuxThat405sWhenMethodMismatch(t *testing.T) {
+	var rs []model.Route
+	rs = append(rs, model.Route{
+		Pattern: "/foo",
+		Method:  "GET",
+	})
+
+	m := *gorillize(rs, handlerStatusOK)
+
+	req := httptest.NewRequest("POST", "/foo", nil)
+	w := httptest.NewRecorder()
+
+	m.ServeHTTP(w, req)
+
+	res := w.Result()
+
+	if res.StatusCode != http.StatusMethodNotAllowed {
+		t.Errorf("status mismatch, got %d, want 405", res.StatusCode)
+	}
+}
+
+func TestGorillizeReturnsAMuxThatMatchesByMethod(t *testing.T) {
+	var rs []model.Route
+	rs = append(rs, model.Route{
+		Pattern: "/foo",
+		Method:  "UNORTHODOX",
+	})
+
+	m := *gorillize(rs, handlerStatusOK)
+
+	req := httptest.NewRequest("UNORTHODOX", "/foo", nil)
+	w := httptest.NewRecorder()
+
+	m.ServeHTTP(w, req)
+
+	res := w.Result()
+
+	if res.StatusCode != http.StatusOK {
+		t.Errorf("status mismatch, got %d, want 200", res.StatusCode)
+	}
+}
+
+// TODO: TestGorillizeReturnsAMuxThatRespectsRouteOrder