commit 289b0a57dba1f06dd8f57e6e5297af770beb7811
author Frank Borden <frankborden@google.com> Fri Feb 24 14:47:02 2023 +0100
committer Frank Borden <frankborden@google.com> Fri Feb 24 14:47:02 2023 +0100
tree c99a8b270f1629af1a9066714650c8a89a7949b4
parent d9eabf573c5dd7a4f7af641f32a54a7d2cb9b487

Topic test #1a

Change-Id: If7ba061158cf91470095b73667b8513fb446d24c

src/main.js

diff --git a/src/main.js b/src/main.js
index 8d462ee..56035dc 100644
--- a/src/main.js
+++ b/src/main.js
@@ -2,4 +2,6 @@
   return a + b;
 }
 
-// TODO: subtraction
\ No newline at end of file
+export function subtract(a, b) {
+  return a - b;
+}

src/main.test.js

diff --git a/src/main.test.js b/src/main.test.js
index 7768201..aacdde3 100644
--- a/src/main.test.js
+++ b/src/main.test.js
@@ -1,7 +1,11 @@
-import { add } from "./main";
+import { add, subtract } from "./main";
 import { expect } from "@esm-bundle/chai";
 
 describe("main tests", () => {
+  it("subtracts two numbers", () => {
+    expect(subtract(3, 5)).to.equal(-2);
+  });
+
   it("adds two numbers", () => {
     expect(add(3, 5)).to.equal(8);
   });