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package dag
import (
"encoding/json"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/MichaelMure/git-bug/entity"
"github.com/MichaelMure/git-bug/identity"
"github.com/MichaelMure/git-bug/repository"
)
// SerializeRoundTripTest realize a marshall/unmarshall round-trip in the same condition as with OperationPack,
// and check if the recovered operation is identical.
func SerializeRoundTripTest[OpT Operation](t *testing.T, maker func(author identity.Interface, unixTime int64) OpT) {
repo := repository.NewMockRepo()
rene, err := identity.NewIdentity(repo, "René Descartes", "rene@descartes.fr")
require.NoError(t, err)
op := maker(rene, time.Now().Unix())
// enforce having an id
op.Id()
rdt := &roundTripper[OpT]{Before: op, author: rene}
data, err := json.Marshal(rdt)
require.NoError(t, err)
err = json.Unmarshal(data, &rdt)
require.NoError(t, err)
require.Equal(t, op, rdt.after)
}
type roundTripper[OpT Operation] struct {
Before OpT
author identity.Interface
after OpT
}
func (r *roundTripper[OpT]) MarshalJSON() ([]byte, error) {
return json.Marshal(r.Before)
}
func (r *roundTripper[OpT]) UnmarshalJSON(data []byte) error {
if err := json.Unmarshal(data, &r.after); err != nil {
return err
}
// Set the id from the serialized data
r.after.setId(entity.DeriveId(data))
// Set the author, as OperationPack would do
r.after.setAuthor(r.author)
return nil
}
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