package repository
import (
"crypto/sha1"
"fmt"
"github.com/MichaelMure/git-bug/util"
"github.com/pkg/errors"
)
// mockRepoForTest defines an instance of Repo that can be used for testing.
type mockRepoForTest struct {
blobs map[util.Hash][]byte
trees map[util.Hash]string
commits map[util.Hash]commit
refs map[string]util.Hash
}
type commit struct {
treeHash util.Hash
parent util.Hash
}
func NewMockRepoForTest() Repo {
return &mockRepoForTest{
blobs: make(map[util.Hash][]byte),
trees: make(map[util.Hash]string),
commits: make(map[util.Hash]commit),
refs: make(map[string]util.Hash),
}
}
// GetPath returns the path to the repo.
func (r *mockRepoForTest) GetPath() string {
return "~/mockRepo/"
}
func (r *mockRepoForTest) GetUserName() (string, error) {
return "René Descartes", nil
}
// GetUserEmail returns the email address that the user has used to configure git.
func (r *mockRepoForTest) GetUserEmail() (string, error) {
return "user@example.com", nil
}
// GetCoreEditor returns the name of the editor that the user has used to configure git.
func (r *mockRepoForTest) GetCoreEditor() (string, error) {
return "vi", nil
}
// PushRefs push git refs to a remote
func (r *mockRepoForTest) PushRefs(remote string, refPattern string) error {
return nil
}
func (r *mockRepoForTest) PullRefs(remote string, refPattern string, remoteRefPattern string) error {
return nil
}
func (r *mockRepoForTest) StoreData(data []byte) (util.Hash, error) {
rawHash := sha1.Sum(data)
hash := util.Hash(fmt.Sprintf("%x", rawHash))
r.blobs[hash] = data
return hash, nil
}
func (r *mockRepoForTest) ReadData(hash util.Hash) ([]byte, error) {
data, ok := r.blobs[hash]
if !ok {
return nil, errors.New("unknown hash")
}
return data, nil
}
func (r *mockRepoForTest) StoreTree(entries []TreeEntry) (util.Hash, error) {
buffer := prepareTreeEntries(entries)
rawHash := sha1.Sum(buffer.Bytes())
hash := util.Hash(fmt.Sprintf("%x", rawHash))
r.trees[hash] = buffer.String()
return hash, nil
}
func (r *mockRepoForTest) StoreCommit(treeHash util.Hash) (util.Hash, error) {
rawHash := sha1.Sum([]byte(treeHash))
hash := util.Hash(fmt.Sprintf("%x", rawHash))
r.commits[hash] = commit{
treeHash: treeHash,
}
return hash, nil
}
func (r *mockRepoForTest) StoreCommitWithParent(treeHash util.Hash, parent util.Hash) (util.Hash, error) {
rawHash := sha1.Sum([]byte(treeHash + parent))
hash := util.Hash(fmt.Sprintf("%x", rawHash))
r.commits[hash] = commit{
treeHash: treeHash,
parent: parent,
}
return hash, nil
}
func (r *mockRepoForTest) UpdateRef(ref string, hash util.Hash) error {
r.refs[ref] = hash
return nil
}
func (r *mockRepoForTest) ListRefs(refspec string) ([]string, error) {
keys := make([]string, len(r.refs))
i := 0
for k := range r.refs {
keys[i] = k
i++
}
return keys, nil
}
func (r *mockRepoForTest) ListCommits(ref string) ([]util.Hash, error) {
var hashes []util.Hash
hash := r.refs[ref]
for {
commit, ok := r.commits[hash]
if !ok {
break
}
hashes = append([]util.Hash{hash}, hashes...)
hash = commit.parent
}
return hashes, nil
}
func (r *mockRepoForTest) ListEntries(hash util.Hash) ([]TreeEntry, error) {
var data string
data, ok := r.trees[hash]
if !ok {
// Git will understand a commit hash to reach a tree
commit, ok := r.commits[hash]
if !ok {
return nil, errors.New("unknown hash")
}
data, ok = r.trees[commit.treeHash]
if !ok {
return nil, errors.New("unknown hash")
}
}
return readTreeEntries(data)
}
