29 lines
1.1 KiB
TypeScript
29 lines
1.1 KiB
TypeScript
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import { capitalizeFirstLetter } from './string';
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describe('capitalize first letter', () => {
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test('should return the same string with the first letter capitalized', () => {
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const result = capitalizeFirstLetter('classroom');
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expect(result).toEqual('Classroom');
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});
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test('should return an empty string when given an empty string', () => {
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const result = capitalizeFirstLetter('');
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expect(result).toEqual('');
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});
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test('should return the same string when given a string with all uppercase letters', () => {
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const result = capitalizeFirstLetter('UPPERCASE');
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expect(result).toEqual('UPPERCASE');
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});
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test('should return the same string when given a string with a non-alphabetical first character', () => {
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const result = capitalizeFirstLetter('123abc');
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expect(result).toEqual('123abc');
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});
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test('should return the first letter of the first word capitalized when given a sentence', () => {
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const result = capitalizeFirstLetter('classroomio is an open source project');
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expect(result).toEqual('Classroomio is an open source project');
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});
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});
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