chore: remove old parser

tools/challenge-parser/parser/plugins/add-frontmatter.test.js

@@ -0,0 +1,72 @@
+/* global describe it expect beforeEach */
+
+const { isObject } = require('lodash');
+
+const mockAST = require('../__fixtures__/ast-yaml-challenge.json');
+const processFrontmatter = require('./add-frontmatter');
+
+describe('process-frontmatter plugin', () => {
+  const plugin = processFrontmatter();
+  let file = { data: {} };
+  beforeEach(() => {
+    file = { data: {} };
+  });
+
+  it('should return a plugin which is a function', () => {
+    expect(typeof plugin).toEqual('function');
+  });
+
+  it('should maintain an object for the `file.data` property', () => {
+    plugin(mockAST, file);
+    expect(isObject(file.data)).toBe(true);
+  });
+
+  // And no others. The AST includes some yaml code, and this also
+  // checks that none of those keys get parsed
+  it('should add all keys from frontmatter to the `file.data` property', () => {
+    const expectedKeys = [
+      'id',
+      'title',
+      'challengeType',
+      'videoUrl',
+      'forumTopicId'
+    ];
+    plugin(mockAST, file);
+    const actualKeys = Object.keys(file.data);
+    expect(actualKeys).toEqual(expectedKeys);
+  });
+
+  it('should not mutate any type held in the frontmatter', () => {
+    expect.assertions(5);
+    plugin(mockAST, file);
+    const { id, title, challengeType, videoUrl, forumTopicId } = file.data;
+    expect(typeof id).toEqual('string');
+    expect(typeof title).toEqual('string');
+    expect(typeof challengeType).toEqual('number');
+    expect(typeof videoUrl).toEqual('string');
+    expect(typeof forumTopicId).toEqual('number');
+  });
+
+  it('should trim extra whitespace from keys and values', () => {
+    expect.assertions(8);
+    plugin(mockAST, file);
+    const whitespaceRE = /(^\s\S+|\S\s$)/;
+    const keys = Object.keys(file.data);
+    keys.forEach(key => expect(whitespaceRE.test(key)).toBe(false));
+    const values = keys.map(key => file.data[key]);
+    values
+      .filter(value => typeof value === 'string')
+      .forEach(value => expect(whitespaceRE.test(value)).toBe(false));
+  });
+
+  it('should not mutate url strings', () => {
+    const expectedUrl = 'https://scrimba.com/p/pVMPUv/cE8Gpt2';
+    plugin(mockAST, file);
+    expect(file.data.videoUrl).toEqual(expectedUrl);
+  });
+
+  it('should have an output to match the snapshot', () => {
+    plugin(mockAST, file);
+    expect(file.data).toMatchSnapshot();
+  });
+});