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package index
import (	"testing")import "gotest.tools/v3/assert"
func TestCodec(t *testing.T) {
	var encoded = []string{"[1,[2,null,null],[3,[4,null,null],[5,null,null]]]", "null", "[1,null,null]", "[1,[2,null,null],null]"}	var decoded = []*TreeNode{
		{Val: 1, Left: &TreeNode{Val: 2, Left: nil, Right: nil}, Right: &TreeNode{Val: 3, Left: &TreeNode{Val: 4, Left: nil, Right: nil}, Right: &TreeNode{Val: 5, Left: nil, Right: nil}}},		nil,		{Val: 1, Left: nil, Right: nil},		{Val: 1, Left: &TreeNode{Val: 2, Left: nil, Right: nil}, Right: nil}}	for index, data := range encoded {		ser := Constructor()		deser := Constructor()
		ans := deser.deserialize(data)		result := ser.serialize(ans)		assert.Assert(t, result == data)		assert.DeepEqual(t, ans, decoded[index])	}
}