38 lines
1.7 KiB
JavaScript
38 lines
1.7 KiB
JavaScript
const repeatString = require('./repeatString')
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describe('repeatString', () => {
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test('repeats the string', () => {
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expect(repeatString('hey', 3)).toEqual('heyheyhey');
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});
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test.skip('repeats the string many times', () => {
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expect(repeatString('hey', 10)).toEqual('heyheyheyheyheyheyheyheyheyhey');
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});
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test.skip('repeats the string 1 times', () => {
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expect(repeatString('hey', 1)).toEqual('hey');
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});
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test.skip('repeats the string 0 times', () => {
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expect(repeatString('hey', 0)).toEqual('');
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});
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test.skip('returns ERROR with negative numbers', () => {
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expect(repeatString('hey', -1)).toEqual('ERROR');
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});
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test.skip('repeats the string a random amount of times', function () {
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/*The number is generated by using Math.random to get a value from between
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0 to 1, when this is multiplied by 1000 and rounded down with Math.floor it
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equals a number between 0 to 999 (this number will change everytime you run
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the test).*/
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// DO NOT use Math.floor(Math.random() * 1000) in your code,
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// this test generates a random number, then passes it into your code with a function parameter.
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// If this doesn't make sense, you should go read about functions here: https://www.theodinproject.com/paths/foundations/courses/foundations/lessons/fundamentals-part-3
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const number = Math.floor(Math.random() * 1000)
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/*The .match(/((hey))/g).length is a regex that will count the number of heys
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in the result, which if your function works correctly will equal the number that
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was randomaly generated. */
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expect(repeatString('hey', number).match(/((hey))/g).length).toEqual(number);
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});
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test.skip('works with blank strings', () => {
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expect(repeatString('', 10)).toEqual('');
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});
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});
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