📝 add informations about mock system

website/docs/shallow/constructor.md

@@ -11,4 +11,32 @@ The option object is a way to passing property or some other informations to bui
 
 Here is the list of available options:
 
-- {Object} `props` The key is the property name, and the value his value.
+- {Object} `mocks` The key is the property name, and the value his value.
+
+### Examples
+
+#### react
+
+```jsx
+const ChildComponent = ({nbLikes}) => {
+  return <button type="button">{nbLikes}</button>;
+};
+
+const Component = () => {
+  return (
+    <section id="post">
+      <ChildComponent nbLikes={0} />
+    </section>
+  );
+};
+
+const cmp = shallow(<Component />, {
+  mock: {
+    ChildComponent
+  }
+});
+
+expect(cmp.html()).toBe(
+  '<section id="post"><ChildComponent nbLikes="0"><button type="button">0</button></ChildComponent></section>'
+);
+```