63 lines
2.0 KiB
JavaScript
63 lines
2.0 KiB
JavaScript
/* global describe it expect beforeEach */
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const { isObject } = require('lodash');
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const mockAST = require('./fixtures/challenge-md-ast.json');
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const frontmatterToData = require('./frontmatter-to-data');
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describe('frontmatter-to-data plugin', () => {
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const plugin = frontmatterToData();
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let file = { data: {} };
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beforeEach(() => {
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file = { data: {} };
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});
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it('should return a plugin which is a function', () => {
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expect(typeof plugin).toEqual('function');
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});
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it('should maintain an object for the `file.data` property', () => {
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plugin(mockAST, file);
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expect(isObject(file.data)).toBe(true);
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});
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it('should add all keys from frontmatter to the `file.data` property', () => {
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const expectedKeys = ['id', 'title', 'challengeType', 'videoUrl'];
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plugin(mockAST, file);
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const actualKeys = Object.keys(file.data);
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expect(actualKeys).toEqual(expectedKeys);
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});
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it('should not mutate any type held in the frontmatter', () => {
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expect.assertions(4);
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plugin(mockAST, file);
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const { id, title, challengeType, videoUrl } = file.data;
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expect(typeof id).toEqual('string');
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expect(typeof title).toEqual('string');
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expect(typeof challengeType).toEqual('number');
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expect(typeof videoUrl).toEqual('string');
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});
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it('should trim extra whitespace from keys and values', () => {
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expect.assertions(7);
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plugin(mockAST, file);
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const whitespaceRE = /(^\s\S+|\S\s$)/;
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const keys = Object.keys(file.data);
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keys.forEach(key => expect(whitespaceRE.test(key)).toBe(false));
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const values = keys.map(key => file.data[key]);
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values
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.filter(value => typeof value === 'string')
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.forEach(value => expect(whitespaceRE.test(value)).toBe(false));
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});
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it('should not mutate url strings', () => {
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const expectedUrl = 'https://scrimba.com/p/pVMPUv/cE8Gpt2';
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plugin(mockAST, file);
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expect(file.data.videoUrl).toEqual(expectedUrl);
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});
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it('should have an output to match the snapshot', () => {
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plugin(mockAST, file);
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expect(file.data).toMatchSnapshot();
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});
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});
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