test(parser): add posthtml integration test

packages/bbob-parser/test/posthtml.test.js

@@ -0,0 +1,13 @@
+const render = require('posthtml-render');
+const parse = require('../lib');
+
+describe('posthtml-render', () => {
+
+  it('render AST to html', () => {
+    const ast = parse('[size=150][b]PostHTML render test[/b][/size]');
+    const html = render(ast);
+
+    expect(html).toBe('<size size="150"><b>PostHTML render test</b></size>')
+  })
+
+});