Port form chai to jest

client/coral-framework/components/__tests__/Markdown.spec.js

@@ -1,6 +1,5 @@
 import React from 'react';
 import {shallow} from 'enzyme';
-import {expect} from 'chai';
 import Markdown from '../Markdown';
 
 const render = (props) => shallow(<Markdown {...props} />);
@@ -9,12 +8,12 @@ describe('Markdown', () => {
   it('should convert Markdown to html', () => {
     const wrapper = render({content: '*test*'});
     const html = wrapper.html();
-    expect(html).to.contain('<em>');
+    expect(html).toMatch('<em>');
   });
 
   it('should set target="_parent" for links', () => {
     const wrapper = render({content: '[link](https://coralproject.net)'});
     const html = wrapper.html();
-    expect(html).to.contain('target="_parent"');
+    expect(html).toMatch('target="_parent"');
   });
 });

client/talk-plugin-infobox/__tests__/__snapshots__/InfoBox.spec.js.snap

@@ -0,0 +1,16 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`InfoBox renders correctly 1`] = `
+<div
+  className="talk-plugin-infobox-info "
+>
+  <div
+    dangerouslySetInnerHTML={
+      Object {
+        "__html": "<p>test</p>
+",
+      }
+    }
+  />
+</div>
+`;