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Pattern_19.test.js
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const hollowDiamondStarPattern = require('../Pattern_19/Pattern_19');
test('hollowDiamondStarPattern for n=5', () => {
const expectedOutput = [
'**********',
'**** ****',
'*** ***',
'** **',
'* *',
'* *',
'** **',
'*** ***',
'**** ****',
'**********',
];
const consoleSpy = jest.spyOn(console, 'log').mockImplementation();
hollowDiamondStarPattern(5);
expect(consoleSpy.mock.calls.map((args) => args[0])).toEqual(expectedOutput);
consoleSpy.mockRestore();
});
test('hollowDiamondStarPattern for n=10', () => {
const expectedOutput = [
'********************',
'********* *********',
'******** ********',
'******* *******',
'****** ******',
'***** *****',
'**** ****',
'*** ***',
'** **',
'* *',
'* *',
'** **',
'*** ***',
'**** ****',
'***** *****',
'****** ******',
'******* *******',
'******** ********',
'********* *********',
'********************',
];
const consoleSpy = jest.spyOn(console, 'log').mockImplementation();
hollowDiamondStarPattern(10);
expect(consoleSpy.mock.calls.map((args) => args[0])).toEqual(expectedOutput);
consoleSpy.mockRestore();
});
test('hollowDiamondStarPattern for n=15', () => {
const expectedOutput = [
'******************************',
'************** **************',
'************* *************',
'************ ************',
'*********** ***********',
'********** **********',
'********* *********',
'******** ********',
'******* *******',
'****** ******',
'***** *****',
'**** ****',
'*** ***',
'** **',
'* *',
'* *',
'** **',
'*** ***',
'**** ****',
'***** *****',
'****** ******',
'******* *******',
'******** ********',
'********* *********',
'********** **********',
'*********** ***********',
'************ ************',
'************* *************',
'************** **************',
'******************************',
];
const consoleSpy = jest.spyOn(console, 'log').mockImplementation();
hollowDiamondStarPattern(15);
expect(consoleSpy.mock.calls.map((args) => args[0])).toEqual(expectedOutput);
consoleSpy.mockRestore();
});