fix(cli): make tests independent of global git config (conventional-changelog#3190)

- Don't apply global changes
- Set $HOME to ensure default global settings aren't picked up

Author: jscheid

@commitlint/cli/src/cli.test.ts

@@ -352,7 +352,7 @@ test("it doesn't use parserOpts.commentChar when using edit mode", async () => {
 
 test('it uses core.commentChar git config when using edit mode', async () => {
 	const cwd = await gitBootstrap('fixtures/comment-char');
-	await execa('git', ['config', 'core.commentChar', '$'], {cwd});
+	await execa('git', ['config', '--local', 'core.commentChar', '$'], {cwd});
 	await fs.writeFile(
 		path.join(cwd, '.git', 'COMMIT_EDITMSG'),
 		'header: foo\n\n$body\n'
@@ -365,7 +365,6 @@ test('it uses core.commentChar git config when using edit mode', async () => {
 
 test('it falls back to # for core.commentChar when using edit mode', async () => {
 	const cwd = await gitBootstrap('fixtures/comment-char');
-	await execa('git', ['config', '--unset', 'core.commentChar'], {cwd});
 	await fs.writeFile(
 		path.join(cwd, '.git', 'COMMIT_EDITMSG'),
 		'header: foo\n\n#body\n'

package.json

@@ -19,8 +19,8 @@
     "publish": "lerna publish --conventional-commits",
     "reinstall": "yarn clean && yarn install",
     "start": "yarn watch",
-    "test": "jest",
-    "test-ci": "jest --runInBand",
+    "test": "HOME=$PWD jest",
+    "test-ci": "HOME=$PWD jest --runInBand",
     "postinstall": "yarn husky install"
   },
   "commitlint": {
@@ -106,4 +106,4 @@
   "resolutions": {
     "**/lodash": "^4.17.19"
   }
-}
+}