Use var in lesson 17

17-unit-testing.html

@@ -30,7 +30,7 @@
 mocha.setup("bdd");
 
 // a simple component. It would normally be imported from another file
-const MyComponent = () => (
+var MyComponent = () => (
  <div>
  <span className="heading">Title</span>
  </div>
@@ -40,11 +40,11 @@
 describe("Component", () => {
  it("should render", () => {
  // a new renderer is created and used to render the component
- const renderer = new ReactShallowRenderer();
+ var renderer = new ReactShallowRenderer();
  renderer.render(<MyComponent />);
 
  // result here should look quiet familiar from lesson 00
- let result = renderer.getRenderOutput();
+ var result = renderer.getRenderOutput();
 
  // now you can traverse the result and check it for correctness
  expect(result.type).toBe("div");
@@ -62,15 +62,15 @@
 
 // here we use the mock part of Jest stand-alone
 // normally this is part of the global "jest" object
-const jest = window["jest-mock"];
+var jest = window["jest-mock"];
 
 // mocking a function to test callback behaviour
-const mockCallback = jest.fn();
+var mockCallback = jest.fn();
 
 describe("Callback", () => {
  it("should be called two times", () => {
  // a test function that calls a callback two times
- const callCallback = c => {
+ var callCallback = c => {
  c();
  c();
  };
@@ -84,4 +84,4 @@
 
 mocha.checkLeaks();
 mocha.run();
-</script>
+</script>