13 lines
337 B
JavaScript
13 lines
337 B
JavaScript
const expect = require('expect');
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const {isNumber} = require('./_30s.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)).toBeTruthy();
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});
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test('passed argument is not a number', () => {
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expect(isNumber('1')).toBeFalsy();
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});
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