aboutsummaryrefslogtreecommitdiffstats
path: root/repository/mock_repo.go
blob: eb48f85f7494bcdbeb357701bc7b4329a83606c1 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
package repository

import (
	"crypto/sha1"
	"fmt"
	"strings"

	"github.com/MichaelMure/git-bug/util"
)

// 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
	createClock util.LamportClock
	editClock   util.LamportClock
}

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),
		createClock: util.NewLamportClock(),
		editClock:   util.NewLamportClock(),
	}
}

// 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, refSpec string) error {
	return nil
}

func (r *mockRepoForTest) FetchRefs(remote string, refSpec 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, fmt.Errorf("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) RefExist(ref string) (bool, error) {
	_, exist := r.refs[ref]
	return exist, nil
}

func (r *mockRepoForTest) CopyRef(source string, dest string) error {
	hash, exist := r.refs[source]

	if !exist {
		return fmt.Errorf("Unknown ref")
	}

	r.refs[dest] = 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
}

// ListIds will return a list of Git ref matching the given refspec,
// stripped to only the last part of the ref
func (r *mockRepoForTest) ListIds(refspec string) ([]string, error) {
	keys := make([]string, len(r.refs))

	i := 0
	for k := range r.refs {
		splitted := strings.Split(k, "/")
		keys[i] = splitted[len(splitted)-1]
		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, fmt.Errorf("unknown hash")
		}

		data, ok = r.trees[commit.treeHash]

		if !ok {
			return nil, fmt.Errorf("unknown hash")
		}
	}

	return readTreeEntries(data)
}

func (r *mockRepoForTest) FindCommonAncestor(hash1 util.Hash, hash2 util.Hash) (util.Hash, error) {
	panic("implement me")
}

func (r *mockRepoForTest) GetTreeHash(commit util.Hash) (util.Hash, error) {
	panic("implement me")
}

func (r *mockRepoForTest) LoadClocks() error {
	return nil
}

func (r *mockRepoForTest) WriteClocks() error {
	return nil
}

func (r *mockRepoForTest) CreateTimeIncrement() (util.LamportTime, error) {
	return r.createClock.Increment(), nil
}

func (r *mockRepoForTest) EditTimeIncrement() (util.LamportTime, error) {
	return r.editClock.Increment(), nil
}

func (r *mockRepoForTest) CreateWitness(time util.LamportTime) error {
	r.createClock.Witness(time)
	return nil
}

func (r *mockRepoForTest) EditWitness(time util.LamportTime) error {
	r.editClock.Witness(time)
	return nil
}