adding basic jest tests

2026-01-26 14:56:42 +08:00 · 2019-02-15 20:23:26 -08:00
parent 988aea6c1d
commit f019207dba
4 changed files with 28 additions and 0 deletions
--- a/step2-04/index.html
+++ b/step2-04/index.html
@@ -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>
--- a/step2-04/index.spec.ts
+++ b/step2-04/index.spec.ts
@@ -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);
+  });
+});
--- a/step2-04/index.ts
+++ b/step2-04/index.ts
@@ -0,0 +1,3 @@
+export function square(x: number) {
+  return x * x;
+}