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index.test.js
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index.test.js
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'use strict';
const RqrsEmitter = require('./index');
test('new object', () => {
const rre = new RqrsEmitter();
expect(rre).toBeDefined();
});
test('successful call - with request', async () => {
const rre = new RqrsEmitter();
rre.handler('test', async req => {
expect(req.a).toBe(1);
return 'ok';
});
const res = await rre.request('test', { a: 1 });
expect(res).toBe('ok');
});
test('successful call - empty request', async () => {
const rre = new RqrsEmitter();
rre.handler('test', async () => 'ok');
const res = await rre.request('test');
expect(res).toBe('ok');
});
test('no handler error', async () => {
const rre = new RqrsEmitter();
try {
await rre.request('test')
} catch (e) {
expect(e.toString()).toBe('Error: no handler found for [test]');
}
});
test('remove handler', async() => {
const rre = new RqrsEmitter();
rre.handler('test', async () => 'ok');
const res = await rre.request('test');
expect(res).toBe('ok');
rre.removeHandler('test');
try {
await rre.request('test')
expect(null).toBe('exception not thrown');
} catch (e) {
expect(e.toString()).toBe('Error: no handler found for [test]');
}
});
test('handler already exists error', async () => {
const rre = new RqrsEmitter();
rre.handler('test', async () => 'ok');
try {
rre.handler('test', async () => 'ok');
expect(null).toBe('exception not thrown');
} catch (e) {
expect(e.toString()).toBe('Error: handler already exists for [test]');
}
});
test('handler throwing exception', async () => {
const rre = new RqrsEmitter();
rre.handler('test', async () => {
throw new Error('error in handler');
});
try {
await rre.request('test');
expect(null).toBe('exception not thrown');
} catch (e) {
expect(e.toString()).toBe('Error: error in handler');
}
});