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
|
'use strict';
const Grafn = require('..');
const Tap = require('tap');
Tap.beforeEach((done, t) => {
t.graph = new Grafn();
t.verticesRan = 0;
done();
});
Tap.test(async (t) => {
await t.rejects(t.graph.run('nonExisting'), 'It throws an error if you try to run a non-existing vertex');
});
Tap.test(async (t) => {
t.graph.vertex({
name: 'root',
action() {
t.verticesRan++;
}
});
await t.graph.run('root');
t.equal(t.verticesRan, 1, 'It runs a vertex if no dependencies are defined');
});
Tap.test(async (t) => {
t.graph.vertex({
name: 'unfulfilled',
dependencies: ['nonExisting'],
action() {
t.verticesRan++;
}
});
await t.graph.run('unfulfilled');
t.equal(t.verticesRan, 0, 'It does not run a vertex if it has unfulfilled dependencies');
});
Tap.test(async (t) => {
t.graph.vertex({
name: 'root',
action() { }
});
t.graph.vertex({
name: 'firstDependent',
dependencies: ['root'],
action() {
t.verticesRan++;
}
});
t.graph.vertex({
name: 'secondDependent',
dependencies: ['root'],
action() {
t.verticesRan += 2;
}
});
await t.graph.run('root');
t.equal(t.verticesRan, 3, 'It runs dependent vertices on completion of a vertex\'s action');
});
Tap.test(async (t) => {
t.graph.vertex({
name: 'root',
action() { }
});
t.graph.vertex({
name: 'firstDependent',
dependencies: ['root'],
action() {
return 1;
}
});
t.graph.vertex({
name: 'secondDependent',
dependencies: ['root'],
action() {
return 2;
}
});
t.graph.vertex({
name: 'final',
dependencies: ['firstDependent', 'secondDependent'],
action(state) {
t.verticesRan = state.firstDependent + state.secondDependent;
}
});
await t.graph.run('root');
t.equal(t.verticesRan, 3, 'It ensures dependencies state is available before running dependents');
});
Tap.test(async (t) => {
t.graph.vertex({
name: 'root',
action() {
return 101;
}
});
t.graph.vertex({
name: 'stateDependent',
dependencies: ['root'],
action(state) {
t.verticesRan = state.root;
}
});
await t.graph.run('root');
t.equal(t.verticesRan, 101, 'It gives dependent vertices a state including their dependencies\' results');
});
Tap.test(async (t) => {
t.graph.vertex({
name: 'root',
action() {
throw new Error('Unexpected root problem');
}
});
await t.rejects(t.graph.run('root'), 'It throws an error if a vertex throws an error');
});
Tap.test(async (t) => {
t.graph.vertex({
name: 'root',
action() {
t.verticesRan++;
return 1;
}
});
await t.graph.run('root');
await t.graph.run('root');
t.equal(t.verticesRan, 1, 'It runs a vertex only once');
});
Tap.test( (t) => {
t.graph.vertex({
name: 'root',
action() {}
});
t.graph.vertex({
name: 'firstDependent',
dependencies: ['root'],
action() {}
});
t.graph.vertex({
name: 'secondDependent',
dependencies: ['root'],
action() {}
});
t.graph.vertex({
name: 'final',
dependencies: ['firstDependent', 'secondDependent'],
action() {}
});
t.matchSnapshot(t.graph.toString(), 'It can convert to a string representing the graph in graphviz format');
t.end();
});
Tap.test('It colorizes the graph based on execution results', async (t) => {
t.graph.vertex({
name: 'root',
action() {}
});
t.graph.vertex({
name: 'firstDependent',
dependencies: ['root'],
action() {}
});
t.graph.vertex({
name: 'secondDependent',
dependencies: ['root'],
action() {
throw new Error('Second dependent has failed');
}
});
t.graph.vertex({
name: 'final',
dependencies: ['firstDependent', 'secondDependent'],
action() {}
});
await t.rejects(t.graph.run('root'), 'It throws an error if a sub-step fails');
t.matchSnapshot(t.graph.toString(), 'It adds the right colors according to execution');
});
|
