Update testing documentation

TESTING.md

@@ -9,7 +9,39 @@ Before starting, follow the [instructions](README.md#installation) for installin
 Before attempting to run the test suite copy the example environment file for tests and update the values to match your environment:
 
 `cp .env.testing.example .env.testing`
-> Since the data in the database is flushed after each test it is recommended you create a separate mysql database for specifically for tests
+
+The following should work for running tests in memory with sqlite:
+```
+# --------------------------------------------
+# REQUIRED: BASIC APP SETTINGS
+# --------------------------------------------
+APP_ENV=testing
+APP_DEBUG=true
+APP_KEY=base64:glJpcM7BYwWiBggp3SQ/+NlRkqsBQMaGEOjemXqJzOU=
+APP_URL=http://localhost:8000
+APP_TIMEZONE='UTC'
+APP_LOCALE=en
+
+# --------------------------------------------
+# REQUIRED: DATABASE SETTINGS
+# --------------------------------------------
+DB_CONNECTION=sqlite_testing
+#DB_HOST=127.0.0.1
+#DB_PORT=3306
+#DB_DATABASE=null
+#DB_USERNAME=null
+#DB_PASSWORD=null
+```
+
+To use MySQL you should update the `DB_` variables to match your local test database:
+```
+DB_CONNECTION=mysql
+DB_HOST=127.0.0.1
+DB_PORT=3306
+DB_DATABASE={}
+DB_USERNAME={}
+DB_PASSWORD={}
+```
 
 Now you are ready to run the entire test suite from your terminal:
 
@@ -19,6 +51,10 @@ To run individual test files, you can pass the path to the test that you want to
 
 `php artisan test tests/Unit/AccessoryTest.php`
 
+You can also run the tests in parallel with:
+
+`php artisan test --parallel`
+
 ## Browser Tests 
 
 Browser tests are run via [Laravel Dusk](https://laravel.com/docs/8.x/dusk) and require Google Chrome to be installed.