10 lines
299 B
JavaScript
10 lines
299 B
JavaScript
const expect = require('expect');
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const coalesce = require('./coalesce.js');
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test('coalesce is a Function', () => {
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expect(coalesce).toBeInstanceOf(Function);
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});
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test('Returns the first non-null/undefined argument', () => {
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expect(coalesce(null, undefined, '', NaN, 'Waldo')).toEqual('');
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});
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