83a6a6ea32
* chore: make aware eslint that we use jest By setting up the jest environment, we no longer need to declare the 'test' global in the configuration. * chore: don't need to import expect, it's a jest environment global * chore: don't need to import expect when creating undefined test
17 lines
552 B
JavaScript
17 lines
552 B
JavaScript
const {createEventHub} = require('./_30s.js');
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test('createEventHub is a Function', () => {
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expect(createEventHub).toBeInstanceOf(Function);
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});
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test('createEventHub returns an object', () => {
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let hub = createEventHub();
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expect(typeof hub).toBe('object');
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expect(typeof hub.hub).toBe('object');
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expect(hub.emit).toBeInstanceOf(Function);
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expect(hub.on).toBeInstanceOf(Function);
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expect(hub.off).toBeInstanceOf(Function);
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expect(hub.emit()).toBe(undefined);
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expect(hub.on()).toBe(undefined);
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expect(hub.off()).toBe(undefined);
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});
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