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adding basic jest tests

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This commit is contained in:
Ken
2019-02-15 20:23:26 -08:00
parent 988aea6c1d
commit f019207dba
4 changed files with 28 additions and 0 deletions
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1
step2-01/src/async/index.ts
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@@ -3,6 +3,7 @@ async function fetchSomething() {
return await response.text(); return await response.text();
} }
// Async functions always returns Promise
fetchSomething().then(text => { fetchSomething().then(text => {
console.log('hello ' + text); console.log('hello ' + text);
}); });

8
step2-04/index.html Normal file
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@@ -0,0 +1,8 @@
<!DOCTYPE html>
<html>
<body>
For this step, we look at unit testing. Run
<pre>npm test</pre>
in the command line.
</body>
</html>

16
step2-04/index.spec.ts Normal file
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@@ -0,0 +1,16 @@
import { square } from '.';
describe('square', () => {
beforeEach(() => {
console.log('this happens before each test');
});
afterEach(() => {
console.log('this happens after each test');
});
it('should be able to give the square of two numbers', () => {
console.log('test');
expect(square(5)).toBe(25);
});
});

3
step2-04/index.ts Normal file
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@@ -0,0 +1,3 @@
export function square(x: number) {
return x * x;
}