test: add test for parseHeaders

lib/util/parseHeaders.js

@@ -18,7 +18,7 @@ const removeMarkdownToken = str => String(str)
   .replace(/(\\)(\*|_|`)/g, '$2')               // remove escape char '\'
 
 exports.removeTailHtml = (str) => {
-  return String(str).replace(/<.*>\s*$/g, '')
+  return String(str).replace(/\s*?<.*>\s*$/g, '')
 }
 
 // only remove some md tokens.

test/util/parseHeaders.spec.js

+import {
+  parseHeaders,
+  removeTailHtml
+} from '@/util/parseHeaders'
+
+describe('parseHeaders', () => {
+  test('should unescape html', () => {
+    const input = '<div>'
+    expect(parseHeaders(input)).toBe('<div>')
+  })
+
+  test('should remove markdown tokens correctly', () => {
+    const asserts = {
+      // #238
+      '[vue](vuejs.org)': 'vue',
+      '`vue`': 'vue',
+      '*vue*': 'vue',
+      '**vue**': 'vue',
+      '***vue***': 'vue',
+      '_vue_': 'vue',
+      '\\_vue\\_': '_vue_',
+      '\\*vue\\*': '*vue*',
+
+      // #564 For multiple markdown tokens
+      '`a` and `b`': 'a and b',
+      '***bold and italic***': 'bold and italic',
+      '**bold** and *italic*': 'bold and italic'
+    }
+    Object.keys(asserts).forEach(input => {
+      expect(parseHeaders(input)).toBe(asserts[input])
+    })
+  })
+
+  test('should remove tail html correctly', () => {
+    expect(removeTailHtml('# H1 <div></div>>')).toBe('# H1')
+  })
+})