-
Notifications
You must be signed in to change notification settings - Fork 1.1k
/
test-helpers.ts
147 lines (129 loc) · 3.94 KB
/
test-helpers.ts
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
// Copyright IBM Corp. 2020. All Rights Reserved.
// Node module: @loopback/express
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
import {
Binding,
createProxyWithInterceptors,
intercept,
InterceptorOrKey,
} from '@loopback/core';
import {Client, givenHttpServerConfig, supertest} from '@loopback/testlab';
import bodyParser from 'body-parser';
import {NextFunction, Request, Response} from 'express';
import {ExpressApplication} from '../../express.application';
import {ExpressRequestHandler} from '../../types';
import {SpyAction, SpyConfig} from '../fixtures/spy-config';
export {default as spy} from '../fixtures/spy.middleware';
export {SpyConfig} from '../fixtures/spy-config';
function runAsyncWrapper(
callback: (req: Request, res: Response, next: NextFunction) => Promise<void>,
): ExpressRequestHandler {
return function (req: Request, res: Response, next: NextFunction) {
callback(req, res, next).catch(next);
};
}
export type TestFunction = (
spyBinding: Binding<unknown>,
path?: string,
) => Promise<unknown>;
export class TestHelper {
readonly app: ExpressApplication;
client: Client;
constructor() {
this.app = new ExpressApplication({
express: {
...givenHttpServerConfig(),
settings: {
env: 'test',
},
},
});
this.app.expressServer.expressMiddleware(
bodyParser.json,
{strict: false},
{key: 'middleware.bodyParser'},
);
}
async start() {
await this.app.start();
this.client = supertest(this.app.expressServer.url);
}
stop() {
return this.app.stop();
}
bindController(interceptor?: InterceptorOrKey) {
const interceptors: InterceptorOrKey[] = [];
if (interceptor) interceptors.push(interceptor);
class MyController {
@intercept(...interceptors)
hello(msg: string) {
return `Hello, ${msg}`;
}
}
const binding = this.app.controller(MyController);
const handler: ExpressRequestHandler = runAsyncWrapper(
async (req, res, next) => {
try {
const controller = await this.app.get<MyController>(binding.key);
const proxy = createProxyWithInterceptors(
controller,
this.app.expressServer.getMiddlewareContext(req),
undefined,
{
type: 'route',
value: controller,
},
);
res.send(await proxy.hello(req.body));
} catch (err) {
next(err);
}
},
);
this.app.expressServer.expressApp.post('/hello', handler);
this.app.expressServer.expressApp.post('/greet', handler);
}
private configureSpy(
spyBinding: Binding<unknown>,
action: SpyAction = 'log',
) {
this.app.configure<SpyConfig>(spyBinding.key).to({action});
}
async testSpyLog(spyBinding: Binding<unknown>, path = '/hello') {
this.configureSpy(spyBinding);
await this.assertSpyLog(path);
}
async assertSpyLog(path = '/hello') {
await this.client
.post(path)
.send('"World"')
.set('content-type', 'application/json')
.expect(200, 'Hello, World')
.expect('x-spy-log', `POST ${path}`);
}
async testSpyMock(spyBinding: Binding<unknown>, path = '/hello') {
this.configureSpy(spyBinding, 'mock');
await this.assertSpyMock(path);
}
async assertSpyMock(path = '/hello') {
await this.client
.post(path)
.send('"World"')
.set('content-type', 'application/json')
.expect(200, 'Hello, Spy')
.expect('x-spy-mock', `POST ${path}`);
}
async testSpyReject(spyBinding: Binding<unknown>, path = '/hello') {
this.configureSpy(spyBinding, 'reject');
await this.assertSpyReject(path);
}
private async assertSpyReject(path = '/hello') {
await this.client
.post(path)
.send('"World"')
.set('content-type', 'application/json')
.expect(400)
.expect('x-spy-reject', `POST ${path}`);
}
}