test: add coverage (#58)

.gitignore

@@ -1,2 +1,3 @@
-node_modules/
 .env
+coverage
+node_modules/

lib/main.js

@@ -100,6 +100,7 @@ export async function main(
         authorization: `bearer ${appAuthentication.token}`,
       },
     }).catch((error) => {
+      /* c8 ignore next */
       if (error.status !== 404) throw error;
 
       // https://docs.github.com/rest/apps/apps?apiVersion=2022-11-28#get-a-user-installation-for-the-authenticated-app

main.js

@@ -33,6 +33,7 @@ main(
   }),
   skipTokenRevoke
 ).catch((error) => {
+  /* c8 ignore next 3 */
   console.error(error);
   core.setFailed(error.message);
 });

package.json

@@ -6,7 +6,9 @@
   "description": "GitHub Action for creating a GitHub App Installation Access Token",
   "scripts": {
     "build": "esbuild main.js post.js --bundle --outdir=dist --out-extension:.js=.cjs --platform=node --target=node16.16",
-    "test": "ava tests/index.js"
+    "test": "c8 --100 ava tests/index.js",
+    "coverage": "c8 report --reporter html",
+    "postcoverage": "open-cli coverage/index.html"
   },
   "license": "MIT",
   "dependencies": {
@@ -16,9 +18,11 @@
   },
   "devDependencies": {
     "ava": "^5.3.1",
+    "c8": "^8.0.1",
     "dotenv": "^16.3.1",
     "esbuild": "^0.19.4",
     "execa": "^8.0.1",
+    "open-cli": "^7.2.0",
     "undici": "^5.25.2"
   },
   "release": {

post.js

@@ -11,6 +11,7 @@ post(
     baseUrl: process.env["GITHUB_API_URL"],
   })
 ).catch((error) => {
+  /* c8 ignore next 3 */
   console.error(error);
   core.setFailed(error.message);
 });