/
buffered-worker-pool.spec.js
185 lines (160 loc) · 5.25 KB
/
buffered-worker-pool.spec.js
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
'use strict';
const rewiremock = require('rewiremock/node');
const {createSandbox} = require('sinon');
describe('class BufferedWorkerPool', function() {
let BufferedWorkerPool;
let sandbox;
let pool;
let stats;
let serializeJavascript;
let serializer;
let result;
beforeEach(function() {
sandbox = createSandbox();
stats = {totalWorkers: 10, busyWorkers: 8, idleWorkers: 2, pendingTasks: 3};
result = {failures: 0, events: []};
pool = {
terminate: sandbox.stub().resolves(),
exec: sandbox.stub().resolves(result),
stats: sandbox.stub().returns(stats)
};
serializer = {
deserialize: sandbox.stub()
};
serializeJavascript = sandbox.spy(require('serialize-javascript'));
BufferedWorkerPool = rewiremock.proxy(
require.resolve('../../lib/nodejs/buffered-worker-pool'),
{
workerpool: {
pool: sandbox.stub().returns(pool)
},
'../../lib/nodejs/serializer': serializer,
'serialize-javascript': serializeJavascript
}
).BufferedWorkerPool;
// reset cache
BufferedWorkerPool.resetOptionsCache();
});
afterEach(function() {
sandbox.restore();
});
describe('static method', function() {
describe('create()', function() {
it('should return a BufferedWorkerPool instance', function() {
expect(
BufferedWorkerPool.create({foo: 'bar'}),
'to be a',
BufferedWorkerPool
);
});
describe('when passed no arguments', function() {
it('should not throw', function() {
expect(BufferedWorkerPool.create, 'not to throw');
});
});
});
describe('serializeOptions()', function() {
describe('when passed no arguments', function() {
it('should not throw', function() {
expect(BufferedWorkerPool.serializeOptions, 'not to throw');
});
});
it('should return a serialized string', function() {
expect(
BufferedWorkerPool.serializeOptions({foo: 'bar'}),
'to be a',
'string'
);
});
describe('when called multiple times with the same object', function() {
it('should not perform serialization twice', function() {
const obj = {foo: 'bar'};
BufferedWorkerPool.serializeOptions(obj);
BufferedWorkerPool.serializeOptions(obj);
expect(serializeJavascript, 'was called once');
});
it('should return the same value', function() {
const obj = {foo: 'bar'};
expect(
BufferedWorkerPool.serializeOptions(obj),
'to be',
BufferedWorkerPool.serializeOptions(obj)
);
});
});
});
});
describe('constructor', function() {
it('should apply defaults', function() {
expect(new BufferedWorkerPool(), 'to satisfy', {
options: {
workerType: 'process',
forkOpts: {execArgv: process.execArgv},
maxWorkers: expect.it('to be greater than or equal to', 1)
}
});
});
});
describe('instance method', function() {
let workerPool;
beforeEach(function() {
workerPool = BufferedWorkerPool.create();
});
describe('stats()', function() {
it('should return the object returned by `workerpool.Pool#stats`', function() {
expect(workerPool.stats(), 'to be', stats);
});
});
describe('run()', function() {
describe('when passed no arguments', function() {
it('should reject', async function() {
return expect(workerPool.run(), 'to be rejected with', {
code: 'ERR_MOCHA_INVALID_ARG_TYPE'
});
});
});
describe('when passed a non-string filepath', function() {
it('should reject', async function() {
return expect(workerPool.run(123), 'to be rejected with', {
code: 'ERR_MOCHA_INVALID_ARG_TYPE'
});
});
});
it('should serialize the options object', async function() {
await workerPool.run('file.js', {foo: 'bar'});
expect(pool.exec, 'to have a call satisfying', [
'run',
['file.js', '{"foo":"bar"}']
]).and('was called once');
});
it('should deserialize the result', async function() {
await workerPool.run('file.js', {foo: 'bar'});
expect(serializer.deserialize, 'to have a call satisfying', [
result
]).and('was called once');
});
});
describe('terminate()', function() {
describe('when called with `force`', function() {
beforeEach(async function() {
await workerPool.terminate(true);
});
it('should delegate to the underlying pool w/ "force" behavior', async function() {
expect(pool.terminate, 'to have a call satisfying', [true]).and(
'was called once'
);
});
});
describe('when called without `force`', function() {
beforeEach(async function() {
await workerPool.terminate();
});
it('should delegate to the underlying pool w/o "force" behavior', async function() {
expect(pool.terminate, 'to have a call satisfying', [false]).and(
'was called once'
);
});
});
});
});
});