15 lines
345 B
JavaScript
15 lines
345 B
JavaScript
const expect = require('expect');
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const isNumber = require('./isNumber.js');
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test('isNumber is a Function', () => {
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expect(isNumber).toBeInstanceOf(Function);
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});
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test('passed argument is a number', () => {
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expect(isNumber(1)).toBe(true)
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});
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test('passed argument is not a number', () => {
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expect(isNumber('1')).toBe(false)
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});
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