package main

import (
	"testing"

	"github.com/goccy/go-yaml"
	"github.com/stretchr/testify/require"
	"github.com/stretchr/testify/suite"
)

type DiffSuite struct {
	suite.Suite
}

func TestDiffSuite(t *testing.T) {
	suite.Run(t, new(DiffSuite))
}

func (s *DiffSuite) TestCompareIgnoresTopLevelMapKeyOrder() {
	diff1, diff2 := s.compareDocuments(`
first: 1
second: 2
`, `
second: 2
first: 1
`)

	require.Empty(s.T(), diff1)
	require.Empty(s.T(), diff2)
}

func (s *DiffSuite) TestCompareIgnoresMapKeyOrderInArray() {
	diff1, diff2 := s.compareDocuments(`
items:
  - name: alpha
    value: 1
  - name: beta
    value: 2
`, `
items:
  - value: 1
    name: alpha
  - value: 2
    name: beta
`)

	require.Empty(s.T(), diff1)
	require.Empty(s.T(), diff2)
}

func (s *DiffSuite) TestCompareStillDetectsChangedMapValue() {
	diff1, diff2 := s.compareDocuments(`
items:
  - name: alpha
    value: 1
`, `
items:
  - value: 2
    name: alpha
`)

	require.NotEmpty(s.T(), diff1)
	require.NotEmpty(s.T(), diff2)
}

func (s *DiffSuite) compareDocuments(yaml1Data, yaml2Data string) (yaml.MapSlice, yaml.MapSlice) {
	s.T().Helper()

	yaml1, err := parse([]byte(yaml1Data))
	require.NoError(s.T(), err)
	yaml2, err := parse([]byte(yaml2Data))
	require.NoError(s.T(), err)

	diff1, diff2 := compare(yaml1, yaml2)
	return diff1, diff2
}