Added tests

internal/contracts/http_test.go

@@ -18,16 +18,15 @@ func TestCastToHTTPHandler(t *testing.T) {
 		sfmt.Fprint(w, expectedBody)
 	})
 
+	request := httptest.NewRequest(http.MethodGet, "/data", nil)
 	httpHandler := contracts.CastToHTTPHandler(uncorsHandler)
 
-	req := httptest.NewRequest(http.MethodGet, "/data", nil)
-
 	t.Run("cast correctly", func(t *testing.T) {
 		recirder := httptest.NewRecorder()
 		responceWriter := contracts.WrapResponseWriter(recirder)
 
 		assert.NotPanics(t, func() {
-			httpHandler.ServeHTTP(responceWriter, req)
+			httpHandler.ServeHTTP(responceWriter, request)
 			assert.Equal(t, expectedBody, testutils.ReadBody(t, recirder))
 		})
 	})
@@ -36,7 +35,23 @@ func TestCastToHTTPHandler(t *testing.T) {
 		recirder := httptest.NewRecorder()
 
 		assert.PanicsWithValue(t, contracts.ErrResponceNotCasted, func() {
-			httpHandler.ServeHTTP(recirder, req)
+			httpHandler.ServeHTTP(recirder, request)
 		})
 	})
 }
+
+func TestHandlerFunc(t *testing.T) {
+	const expectedBody = `{ "OK": true }`
+	uncorsHandler := contracts.HandlerFunc(func(w *contracts.ResponseWriter, r *contracts.Request) {
+		w.WriteHeader(http.StatusOK)
+		sfmt.Fprint(w, expectedBody)
+	})
+
+	recirder := httptest.NewRecorder()
+	responceWriter := contracts.WrapResponseWriter(recirder)
+	request := httptest.NewRequest(http.MethodGet, "/data", nil)
+
+	uncorsHandler.ServeHTTP(responceWriter, request)
+
+	assert.Equal(t, expectedBody, testutils.ReadBody(t, recirder))
+}

internal/server/server_test.go

@@ -20,7 +20,7 @@ func TestNewUncorsServer(t *testing.T) {
 	ctx := context.Background()
 	expectedResponse := "UNCORS OK!"
 
-	var handler contracts.HandlerFunc = func(w *contracts.ResponseWriter, _r *contracts.Request) {
+	var handler contracts.HandlerFunc = func(w *contracts.ResponseWriter, _ *contracts.Request) {
 		w.WriteHeader(http.StatusOK)
 		sfmt.Fprint(w, expectedResponse)
 	}