package feed

import (
  "encoding/json"
  "testing"
)

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

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

func TestDataTypeUnmarshalUnknown(t *testing.T) {
  test := []byte(`"foo"`)
  exp := "unknown data type: foo"
  var val DataType

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

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

func TestDataTypeUnmarshalValid(t *testing.T) {
  test := []byte(`"CVE"`)
  exp := CveType
  var got DataType

  if err := json.Unmarshal(test, &got); err != nil {
    t.Error(err)
    return
  }

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

func TestDataTypeString(t *testing.T) {
  tests := []struct {
    val DataType
    exp string
  } {
    { CveType, "CVE" },
    { DataType(255), "DataType(255)" },
  }

  for _, test := range(tests) {
    t.Run(test.val.String(), func(t *testing.T) {
      got := test.val.String()
      if got != test.exp {
        t.Errorf("got \"%s\", exp \"%s\"", got, test.exp)
      }
    })
  }
}