package home import ( "io/ioutil" "net/http" "net/http/httptest" "strings" "testing" "github.com/AdguardTeam/AdGuardHome/internal/aghio" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) func TestLimitRequestBody(t *testing.T) { errReqLimitReached := &aghio.LimitReachedError{ Limit: defaultReqBodySzLim, } testCases := []struct { name string body string want []byte wantErr error }{{ name: "not_so_big", body: "somestr", want: []byte("somestr"), wantErr: nil, }, { name: "so_big", body: string(make([]byte, defaultReqBodySzLim+1)), want: make([]byte, defaultReqBodySzLim), wantErr: errReqLimitReached, }, { name: "empty", body: "", want: []byte(nil), wantErr: nil, }} makeHandler := func(t *testing.T, err *error) http.HandlerFunc { t.Helper() return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { var b []byte b, *err = ioutil.ReadAll(r.Body) _, werr := w.Write(b) require.Nil(t, werr) }) } for _, tc := range testCases { t.Run(tc.name, func(t *testing.T) { var err error handler := makeHandler(t, &err) lim := limitRequestBody(handler) req := httptest.NewRequest(http.MethodPost, "https://www.example.com", strings.NewReader(tc.body)) res := httptest.NewRecorder() lim.ServeHTTP(res, req) assert.Equal(t, tc.wantErr, err) assert.Equal(t, tc.want, res.Body.Bytes()) }) } }