package feed

import (
  "encoding/json"
  "testing"
  "time"
)

func TestTimeUnmarshallInvalidData(t *testing.T) {
  test := []byte(`{}`)
  var val Time

  if err := json.Unmarshal(test, &val); err == nil {
    t.Errorf("got \"%v\", exp error", val)
  }
}

func TestTimeUnmarshallInvalidString(t *testing.T) {
  test := []byte(`"2020-"`)
  exp := "invalid time: \"2020-\""
  var val Time

  if err := json.Unmarshal(test, &val); err == nil {
    t.Errorf("got \"%v\", exp error", val)
  } else if err.Error() != exp {
    t.Errorf("got \"%s\", exp \"%s\"", err.Error(), exp)
  }
}

func TestTimeUnmarshallInvalidTime(t *testing.T) {
  test := []byte(`"2020-99-99T99:99Z"`)
  var val Time

  if err := json.Unmarshal(test, &val); err == nil {
    t.Errorf("got \"%v\", exp error", val)
  }
}

func TestTimeString(t *testing.T) {
  tests := []struct {
    val string
    exp string
  } {
    { "\"2021-06-09T20:15Z\"", "2021-06-09T20:15:00Z" },
  }

  for _, test := range(tests) {
    t.Run(test.val, func(t *testing.T) {
      var gotTime Time
      if err := json.Unmarshal([]byte(test.val), &gotTime); err != nil {
        t.Error(err)
        return
      }

      got, err := time.Time(gotTime).MarshalText()
      if err != nil {
        t.Error(err)
        return
      }

      if string(got) != test.exp {
        t.Errorf("got \"%s\", exp \"%s\"", string(got), test.exp)
      }
    })
  }
}