Allow database collation to be configurable via environment variables.

Signed-off-by: Mior Muhammad Zaki <crynobone@gmail.com>

src/Concerns/Database/HandlesConnections.php

@@ -25,6 +25,7 @@ final protected function usesDatabaseConnectionsEnvironmentVariables(Repository
             'database' => ['DB', 'DATABASE'],
             'username' => ['USER', 'USERNAME'],
             'password' => 'PASSWORD',
+            'collation' => 'COLLATION',
         ];
 
         foreach ($options as $key => $value) {

tests/Concerns/Database/HandlesConnectionsTest.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Orchestra\Testbench\Tests\Concerns\Database;
+
+use Illuminate\Contracts\Config\Repository;
+use Mockery as m;
+use Orchestra\Testbench\Concerns\Database\HandlesConnections;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+class HandlesConnectionsTest extends TestCase
+{
+    use HandlesConnections;
+
+    /**
+     * Teardown the test environment.
+     */
+    protected function tearDown(): void
+    {
+        m::close();
+    }
+
+    /** @test */
+    public function it_can_build_mysql_connection()
+    {
+        $config = m::mock(Repository::class);
+
+        $_ENV['MYSQL_URL'] = 'mysql://127.0.0.1:3306';
+
+        $config->shouldReceive('get')->never()->with('database.connections.mysql.url')->andReturnNull()
+            ->shouldReceive('get')->once()->with('database.connections.mysql.host')->andReturn('127.0.0.1')
+            ->shouldReceive('get')->once()->with('database.connections.mysql.port')->andReturn('3306')
+            ->shouldReceive('get')->once()->with('database.connections.mysql.database')->andReturn('laravel')
+            ->shouldReceive('get')->once()->with('database.connections.mysql.username')->andReturn('root')
+            ->shouldReceive('get')->once()->with('database.connections.mysql.password')->andReturn('secret')
+            ->shouldReceive('get')->once()->with('database.connections.mysql.collation')->andReturn('utf8mb4_0900_ai_ci')
+            ->shouldReceive('set')->once()->with([
+                'database.connections.mysql.url' => 'mysql://127.0.0.1:3306',
+                'database.connections.mysql.host' => '127.0.0.1',
+                'database.connections.mysql.port' => '3306',
+                'database.connections.mysql.database' => 'laravel',
+                'database.connections.mysql.username' => 'root',
+                'database.connections.mysql.password' => 'secret',
+                'database.connections.mysql.collation' => 'utf8mb4_0900_ai_ci',
+            ]);
+
+        $this->usesDatabaseConnectionsEnvironmentVariables($config, 'mysql', 'MYSQL');
+    }
+}