13 lines
347 B
JavaScript
13 lines
347 B
JavaScript
const expect = require('expect');
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const isNil = require('./isNil.js');
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test('isNil is a Function', () => {
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expect(isNil).toBeInstanceOf(Function);
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});
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t.equal(isNil(null), true, 'Returns true for null');
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t.equal(isNil(undefined), true, 'Returns true for undefined');
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t.equal(isNil(''), false, 'Returns false for an empty string');
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