Created
February 7, 2018 03:37
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Testing a logic that returns a promise
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| const createPromise = (successful, arg) => { | |
| return new Promise((resolve, reject) => { | |
| successful ? resolve(arg) : reject(arg); | |
| }); | |
| }; | |
| describe('Testing a promise', () => { | |
| describe('Returning a Promise', () => { | |
| it('calls the resolve callback', () => { | |
| expect.assertions(1); | |
| return createPromise(true, 'ARG') | |
| .then((arg) => { expect(arg).toBe('ARG'); } ); | |
| }); | |
| it('calls the reject callback', () => { | |
| expect.assertions(1); | |
| return createPromise(false, 'ARG') | |
| .catch((arg) => { expect(arg).toBe('ARG'); }); | |
| }); | |
| }); | |
| }); |
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