13 lines
350 B
JavaScript
13 lines
350 B
JavaScript
const expect = require('expect');
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const {isFunction} = require('./_30s.js');
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test('isFunction is a Function', () => {
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expect(isFunction).toBeInstanceOf(Function);
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});
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test('passed value is a function', () => {
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expect(isFunction(x => x)).toBeTruthy();
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});
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test('passed value is not a function', () => {
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expect(isFunction('x')).toBeFalsy();
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});
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