mirror of https://github.com/thangisme/notes.git
103 lines
4.0 KiB
JavaScript
103 lines
4.0 KiB
JavaScript
/* eslint-disable max-nested-callbacks */
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import {
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expect
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} from 'chai';
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import chalk from 'chalk';
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import alignString from './../src/alignString';
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describe('alignString', () => {
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context('subject parameter value is not a string', () => {
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it('throws an error', () => {
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expect(() => {
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alignString();
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}).to.throw(Error, 'Subject parameter value must be a string.');
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});
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});
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context('container width parameter value is not a string', () => {
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it('throws an error', () => {
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expect(() => {
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alignString('');
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}).to.throw(Error, 'Container width parameter value must be a number.');
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});
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});
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context('subject parameter value width is greater than the container width', () => {
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it('throws an error', () => {
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expect(() => {
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alignString('aa', 1, 'left');
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}).to.throw(Error, 'Subject parameter value width cannot be greater than the container width.');
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});
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});
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context('container alignment parameter value is not a string', () => {
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it('throws an error', () => {
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expect(() => {
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alignString('', 1);
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}).to.throw(Error, 'Alignment parameter value must be a string.');
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});
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});
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context('container alignment parameter value is not a known alignment parameter value', () => {
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it('throws an error', () => {
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expect(() => {
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alignString('', 1, 'foo');
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}).to.throw(Error, 'Alignment parameter value must be a known alignment parameter value (left, right, center).');
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});
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});
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context('subject parameter value', () => {
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context('0 width', () => {
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it('produces a string consisting of container width number of whitespace characters', () => {
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expect(alignString('', 5, 'left')).to.equal(' ', 'left');
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expect(alignString('', 5, 'center')).to.equal(' ', 'center');
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expect(alignString('', 5, 'right')).to.equal(' ', 'right');
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});
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});
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context('plain text', () => {
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context('alignment', () => {
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context('left', () => {
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it('pads the string on the right side using a whitespace character', () => {
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expect(alignString('aa', 6, 'left')).to.equal('aa ');
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});
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});
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context('right', () => {
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it('pads the string on the left side using a whitespace character', () => {
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expect(alignString('aa', 6, 'right')).to.equal(' aa');
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});
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});
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context('center', () => {
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it('pads the string on both sides using a whitespace character', () => {
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expect(alignString('aa', 6, 'center')).to.equal(' aa ');
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});
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context('uneven number of available with', () => {
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it('floors the available width; adds extra space to the end of the string', () => {
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expect(alignString('aa', 7, 'center')).to.equal(' aa ');
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});
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});
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});
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});
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});
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context('text containing ANSI escape codes', () => {
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context('alignment', () => {
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context('left', () => {
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it('pads the string on the right side using a whitespace character', () => {
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expect(alignString(chalk.red('aa'), 6, 'left')).to.equal(chalk.red('aa') + ' ');
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});
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});
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context('right', () => {
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it('pads the string on the left side using a whitespace character', () => {
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expect(alignString(chalk.red('aa'), 6, 'right')).to.equal(' ' + chalk.red('aa'));
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});
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});
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context('center', () => {
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it('pads the string on both sides using a whitespace character', () => {
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expect(alignString(chalk.red('aa'), 6, 'center')).to.equal(' ' + chalk.red('aa') + ' ');
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});
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context('uneven number of available with', () => {
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it('floors the available width; adds extra space to the end of the string', () => {
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expect(alignString(chalk.red('aa'), 7, 'center')).to.equal(' ' + chalk.red('aa') + ' ');
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});
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});
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});
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});
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});
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});
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});
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