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ReverseString.test.js

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import {

ReverseStringIterative,

ReverseStringIterativeInplace

} from '../ReverseString'

describe('ReverseStringIterative', () => {

it('expects to reverse a simple string', () => {

expect(ReverseStringIterative('reverse')).toEqual('esrever')

expect(ReverseStringIterative('some')).toEqual('emos')

expect(ReverseStringIterative('string')).toEqual('gnirts')

expect(ReverseStringIterative('The Algorithms Javascript')).toEqual(

'tpircsavaJ smhtiroglA ehT'

)

})

it('expects to reverse a string with spaces in between', () => {

expect(ReverseStringIterative('reverse me')).toEqual('em esrever')

})

it('expects to reverse a simple string without capitalizing the first letter', () => {

expect(ReverseStringIterative('Javascript')).toEqual('tpircsavaJ')

})

it.each`

input

${123456}

${[1, 2, 3, 4, 5, 6]}

${{ test: 'test' }}

${null}

'expects to throw a type error given a value that is $input',

({ input }) => {

expect(() => ReverseStringIterative(input)).toThrow(

'The given value is not a string'

)

}

)

it('expects to return a empty string with an empty string is given', () => {

expect(ReverseStringIterative('')).toEqual('')

})

describe('ReverseStringIterativeInplace', () => {

it.each([

['hello', 'olleh'],

['word', 'drow']

])('reverse of %s is %s', (value, expected) => {

expect(ReverseStringIterativeInplace(value)).toBe(expected)

})