Props missing after passing to children when using draft-js

Question

I'm kinda new to react and thought that in the constructor function, using super(props) can fully receive the props that passed by parents. But however, I can't get the string test from my parent component.

So in the parent component, I pass the string "test" as props

import React from 'react';
import Post from '../components/post';
import "../components/css/post.css"
class Bulletin extends React.Component  {
  render()
  {
      console.log(this.props);
      return (
       <div>
           <Post test={"sent from parent"}/>
       </div>
      );
  }
}

export default Bulletin;

And then in Post.js, I print the props in two places:

import React, { Component } from 'react';
export default class Edit extends Component {
    constructor(props) {
        super(props);
        console.log(props);
    }
  render() {
    console.log(this.props);
    return (
      <div className="editor" onClick={this.focus}>

      </div>
    );
  }
}

The two outputs are both {className: "editor"} which is not what I need. I need the string {test: "sent from parent"} and don't know why this doesn't works for me.