46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
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import guid from './guid';
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describe('guid', () => {
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Math.random = jest.fn(() => 0.4677647565236618);
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const guidValue = guid();
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afterAll(() => {
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jest.clearAllMocks();
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});
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test('should return 77bf77bf-77bf-77bf-77bf-77bf77bf77bf when the random value is fixed on 0.4677647565236618', () => {
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expect(guidValue).toBe('77bf77bf-77bf-77bf-77bf-77bf77bf77bf');
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});
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test('should always return a guid of size 36', () => {
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expect(guidValue.length).toBe(36);
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});
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test('should always return a guid with five sequences', () => {
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expect(guidValue.split('-').length).toBe(5);
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});
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test('should always return a guid with four dashes', () => {
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expect(guidValue.split('-').length - 1).toBe(4);
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});
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test('should return the first sequence with length of eigth', () => {
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expect(guidValue.split('-')[0].length).toBe(8);
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});
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test('should return the second sequence with length of four', () => {
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expect(guidValue.split('-')[1].length).toBe(4);
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});
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test('should return the third sequence with length of four', () => {
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expect(guidValue.split('-')[2].length).toBe(4);
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});
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test('should return the fourth sequence with length of four', () => {
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expect(guidValue.split('-')[3].length).toBe(4);
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});
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test('should return the last sequence with length of twelve', () => {
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expect(guidValue.split('-')[4].length).toBe(12);
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});
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});
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