package middleware

import (
	"io/ioutil"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestAppInfo(t *testing.T) {
	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, err := w.Write([]byte("resp"))
		require.NoError(t, err)
	})

	server := httptest.NewServer(AppInfo("tapp", "tversion")(handler))
	defer server.Close()

	res, err := http.Get(server.URL)
	require.Nil(t, err)
	defer res.Body.Close()
	assert.Equal(t, http.StatusOK, res.StatusCode)
	assert.Equal(t, "tapp", res.Header.Get("App-Name"))
	assert.Equal(t, "tversion", res.Header.Get("App-Version"))

	b, err := ioutil.ReadAll(res.Body)
	assert.NoError(t, err)
	assert.Equal(t, "resp", string(b))
}