Repository navigation
Expand file tree
/
Copy pathdiffPatch.test.js
More file actions
139 lines (113 loc) · 4.77 KB
/
Copy pathdiffPatch.test.js
File metadata and controls
139 lines (113 loc) · 4.77 KB
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
import { describe, it } from 'bun:test';
import { strict as assert } from 'bun:assert';
import * as Diff3 from '../src/diff3.mjs';
const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
const a0 = a;
const b0 = b;
describe('diffPatch', () => {
it('returns a patch-style diff of two arrays', () => {
const result = Diff3.diffPatch(a, b);
assert.deepEqual(result[0].buffer1.offset, 2);
assert.deepEqual(result[0].buffer1.length, 1);
assert.deepEqual(result[0].buffer1.chunk, ['b']);
assert.deepEqual(result[0].buffer2.offset, 2);
assert.deepEqual(result[0].buffer2.length, 1);
assert.deepEqual(result[0].buffer2.chunk, ['d']);
assert.deepEqual(result[1].buffer1.offset, 5);
assert.deepEqual(result[1].buffer1.length, 4);
assert.deepEqual(result[1].buffer1.chunk, ['new', '00', 'a', 'a']);
assert.deepEqual(result[1].buffer2.offset, 5);
assert.deepEqual(result[1].buffer2.length, 1);
assert.deepEqual(result[1].buffer2.chunk, ['11']);
assert.deepEqual(result[2].buffer1.offset, 10);
assert.deepEqual(result[2].buffer1.length, 0);
assert.deepEqual(result[2].buffer1.chunk, []);
assert.deepEqual(result[2].buffer2.offset, 7);
assert.deepEqual(result[2].buffer2.length, 2);
assert.deepEqual(result[2].buffer2.chunk, ['z', 'z']);
});
it('did not modify buffer1 or buffer2', () => {
assert.equal(a0, a);
assert.equal(b0, b);
});
});
describe('patch', () => {
it('applies a patch against buffer1 to get buffer2', () => {
const patch = Diff3.diffPatch(a, b);
const result = Diff3.patch(a, patch);
assert.deepEqual(result, b);
});
it('did not modify buffer1 or buffer2', () => {
assert.equal(a0, a);
assert.equal(b0, b);
});
});
describe('stripPatch', () => {
const patch = Diff3.diffPatch(a, b);
const strip = Diff3.stripPatch(patch);
it('removes extra information from the diffPatch result', () => {
assert.deepEqual(strip[0].buffer1.offset, 2);
assert.deepEqual(strip[0].buffer1.length, 1);
assert.deepEqual(strip[0].buffer1.chunk, undefined);
assert.deepEqual(strip[0].buffer2.offset, undefined);
assert.deepEqual(strip[0].buffer2.length, undefined);
assert.deepEqual(strip[0].buffer2.chunk, ['d']);
assert.deepEqual(strip[1].buffer1.offset, 5);
assert.deepEqual(strip[1].buffer1.length, 4);
assert.deepEqual(strip[1].buffer1.chunk, undefined);
assert.deepEqual(strip[1].buffer2.offset, undefined);
assert.deepEqual(strip[1].buffer2.length, undefined);
assert.deepEqual(strip[1].buffer2.chunk, ['11']);
assert.deepEqual(strip[2].buffer1.offset, 10);
assert.deepEqual(strip[2].buffer1.length, 0);
assert.deepEqual(strip[2].buffer1.chunk, undefined);
assert.deepEqual(strip[2].buffer2.offset, undefined);
assert.deepEqual(strip[2].buffer2.length, undefined);
assert.deepEqual(strip[2].buffer2.chunk, ['z', 'z']);
});
it('applies a stripped patch against buffer1 to get buffer2', () => {
const result = Diff3.patch(a, strip);
assert.deepEqual(result, b);
});
it('did not modify the original patch', () => {
assert.notEqual(patch, strip);
assert.notEqual(patch[0], strip[0]);
assert.notEqual(patch[1], strip[1]);
assert.notEqual(patch[2], strip[2]);
});
});
describe('invertPatch', () => {
const patch = Diff3.diffPatch(a, b);
const invert = Diff3.invertPatch(patch);
it('inverts the diffPatch result', () => {
assert.deepEqual(invert[0].buffer2.offset, 2);
assert.deepEqual(invert[0].buffer2.length, 1);
assert.deepEqual(invert[0].buffer2.chunk, ['b']);
assert.deepEqual(invert[0].buffer1.offset, 2);
assert.deepEqual(invert[0].buffer1.length, 1);
assert.deepEqual(invert[0].buffer1.chunk, ['d']);
assert.deepEqual(invert[1].buffer2.offset, 5);
assert.deepEqual(invert[1].buffer2.length, 4);
assert.deepEqual(invert[1].buffer2.chunk, ['new', '00', 'a', 'a']);
assert.deepEqual(invert[1].buffer1.offset, 5);
assert.deepEqual(invert[1].buffer1.length, 1);
assert.deepEqual(invert[1].buffer1.chunk, ['11']);
assert.deepEqual(invert[2].buffer2.offset, 10);
assert.deepEqual(invert[2].buffer2.length, 0);
assert.deepEqual(invert[2].buffer2.chunk, []);
assert.deepEqual(invert[2].buffer1.offset, 7);
assert.deepEqual(invert[2].buffer1.length, 2);
assert.deepEqual(invert[2].buffer1.chunk, ['z', 'z']);
});
it('applies an inverted patch against buffer2 to get buffer1', () => {
const result = Diff3.patch(b, invert);
assert.deepEqual(result, a);
});
it('did not modify the original patch', () => {
assert.notEqual(patch, invert);
assert.notEqual(patch[0], invert[0]);
assert.notEqual(patch[1], invert[1]);
assert.notEqual(patch[2], invert[2]);
});
});