Merge pull request mongodb#1941 from divine/pr_1476

[Updated PR#1476] Add explanation for database migration resets

Author: Smolevich

Diff for: README.md

@@ -16,6 +16,7 @@ This package adds functionalities to the Eloquent model and Query builder for Mo
     - [Lumen](#lumen)
     - [Non-Laravel projects](#non-laravel-projects)
   - [Testing](#testing)
+  - [Database Testing](#database-testing)
   - [Configuration](#configuration)
   - [Eloquent](#eloquent)
     - [Extending the base model](#extending-the-base-model)
@@ -113,6 +114,25 @@ To run the test for this package, run:
 docker-compose up
 ```
 
+Database Testing
+-------
+
+To reset the database after each test, add:
+
+```php
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+```
+
+Also inside each test classes, add:
+
+```php
+use DatabaseMigrations;
+```
+
+Keep in mind that these traits are not yet supported:
+- `use Database Transactions;`
+- `use RefreshDatabase;`
+
 Configuration
 -------------
 You can use MongoDB either as the main database, either as a side database. To do so, add a new `mongodb` connection to `config/database.php`: