feat: allow repositories input to be comma or newline-separated (#169)

Resolves https://github.com/actions/create-github-app-token/issues/106

- Fixes the parsing to cope with whitespace in the input string.
- Allows the input to be comma or newline-separated. (I've done this for
all array-type inputs in my own actions, but I'm happy to remove this if
you only want to support comma-separated.)
- Added tests for parsing comma and newline-separated inputs.

tests/main-token-get-owner-set-repo-set-to-many-newline.test.js

@@ -0,0 +1,9 @@
+import { test } from "./main.js";
+
+// Verify `main` successfully obtains a token when the `owner` and `repositories` inputs are set (and the latter is a list of repos).
+await test(() => {
+  process.env.INPUT_OWNER = process.env.GITHUB_REPOSITORY_OWNER;
+  const currentRepoName = process.env.GITHUB_REPOSITORY.split("/")[1];
+  // Intentional unnecessary whitespace to test parsing to array
+  process.env.INPUT_REPOSITORIES = `\n ${currentRepoName}\ntoolkit \n\n checkout \n`;
+});

tests/main-token-get-owner-set-repo-set-to-many.test.js

@@ -4,5 +4,6 @@ import { test } from "./main.js";
 await test(() => {
   process.env.INPUT_OWNER = process.env.GITHUB_REPOSITORY_OWNER;
   const currentRepoName = process.env.GITHUB_REPOSITORY.split("/")[1];
-  process.env.INPUT_REPOSITORIES = `${currentRepoName},toolkit`;
+  // Intentional unnecessary whitespace to test parsing to array
+  process.env.INPUT_REPOSITORIES = ` ${currentRepoName}, toolkit  ,checkout`;
 });

tests/snapshots/index.js.md

@@ -134,6 +134,25 @@ Generated by [AVA](https://avajs.dev).
     ::save-state name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a␊
     ::save-state name=expiresAt::2016-07-11T22:14:10Z`
 
+## main-token-get-owner-set-repo-set-to-many-newline.test.js
+
+> stderr
+
+    ''
+
+> stdout
+
+    `owner and repositories set, creating token for repositories "create-github-app-token,toolkit,checkout" owned by "actions"␊
+    ::add-mask::ghs_16C7e42F292c6912E7710c838347Ae178B4a␊
+    ␊
+    ::set-output name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a␊
+    ␊
+    ::set-output name=installation-id::123456␊
+    ␊
+    ::set-output name=app-slug::github-actions␊
+    ::save-state name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a␊
+    ::save-state name=expiresAt::2016-07-11T22:14:10Z`
+
 ## main-token-get-owner-set-repo-set-to-many.test.js
 
 > stderr
@@ -142,7 +161,7 @@ Generated by [AVA](https://avajs.dev).
 
 > stdout
 
-    `owner and repositories set, creating token for repositories "create-github-app-token,toolkit" owned by "actions"␊
+    `owner and repositories set, creating token for repositories "create-github-app-token,toolkit,checkout" owned by "actions"␊
     ::add-mask::ghs_16C7e42F292c6912E7710c838347Ae178B4a␊
     ␊
     ::set-output name=token::ghs_16C7e42F292c6912E7710c838347Ae178B4a␊