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react.html
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<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>React Demo</title>
<link rel="stylesheet" href="https://unpkg.com/[email protected]/mocha.css">
<style media="screen">
.messageBox {
border: 1px solid;
margin: 1em;
padding: 2em;
}
.error {
border-color: red;
background-color: #eebbbb;
}
.success {
border-color: blue;
background-color: #bbbbee;
}
.hidden {
display: none;
}
</style>
</head>
<body>
<main id="content"></main>
<div id="mocha"></div>
<script type="text/javascript" src="https://unpkg.com/[email protected]/babel.js"></script>
<script type="text/javascript" src="https://unpkg.com/[email protected]/umd/react.production.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/[email protected]/umd/react-dom.production.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/[email protected]/chai.js"></script>
<script type="text/javascript" src="https://unpkg.com/[email protected]/mocha.js"></script>
<script type="text/babel" data-presets="react">
class NameInput extends React.Component {
constructor(props) {
super(props);
this.state = {
message: {
type: undefined,
body: undefined
}
}
this.buttonClicked = this.buttonClicked.bind(this);
}
buttonClicked(evt) {
let name = this.refs.nameInput.value;
this.setState({
message: {
type: name ? "success" : "error",
body: name ? "Welcome to React, " + name : "You must enter a name!"
}
})
}
render() {
let msg = this.state.message;
return (
<div>
<label>Name: <input ref="nameInput" type="text"/></label>
<button id="inputButton" onClick={this.buttonClicked}>Click me!</button>
<MessageBox type={msg.type} message={msg.body}/>
</div>
)
}
}
class MessageBox extends React.Component {
render() {
return (
<div className={"messageBox " + (this.props.type || "hidden")}>
{this.props.message}
</div>
)
}
}
ReactDOM.render(<NameInput />, document.getElementById('content'));
</script>
<script type="text/babel" data-presets="react">
const assert = chai.assert;
mocha.ui("bdd");
mocha.reporter("html");
describe("Example tests", () => {
it("Prove that math works", () => {
assert.equal(5, 3 + 2, "Math works!");
assert.notEqual(3+2, 6, "Math still works.");
assert.closeTo(Math.PI, 3, .2, "PI is close to 3.");
});
it("Found our component", () => {
assert.isDefined(MessageBox, "Our MessageBox component is defined");
});
it("Let us test a function", () => {
let myName = "Robin";
const greet = (name) => "Hello, " + name;
assert.include(greet(myName), myName, "Greeting includes name");
});
});
describe("Document tests", () => {
it("Rendered an empty message box", () => {
let msgBox = document.querySelector(".messageBox");
assert.isDefined(msgBox, "Messagebox is defined");
assert.include(msgBox.classList.value, "hidden", "Message box is hidden");
assert.equal(msgBox.innerText, "", "Message box is empty.");
});
it("Rendered an error when name is empty", () => {
let msgBox = document.querySelector(".messageBox");
let button = document.querySelector("#inputButton");
button.click();
assert.include(msgBox.classList.value, "error", "We clicked the button");
})
});
mocha.run();
</script>
</body>
</html>