package meta

import (
	"testing"

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

func TestChangedFields(t *testing.T) {
	t.Run("#SetChanged", func(t *testing.T) {
		changedFields := NewChangedFields(3)

		expectedFieldsMap := map[string]struct{}{
			"a": {},
			"b": {},
			"c": {},
		}

		changedFields.SetChanged("a", "b", "c", "a")

		assert.Equal(t, expectedFieldsMap, changedFields.fieldNames)
	})

	t.Run("#GetFieldsKey", func(t *testing.T) {
		changedFields := NewChangedFields(3)
		changedFields.SetChanged("b", "c", "a")
		expectedKey := "bca"

		actualKey := changedFields.GetFieldsKey()

		assert.Equal(t, expectedKey, actualKey)
	})
}