Add basic tests for connection enums in models

Author: jnoordsij

tests/Database/DatabaseEloquentModelTest.php

@@ -56,6 +56,7 @@
 use InvalidArgumentException;
 use LogicException;
 use Mockery as m;
+use PHPUnit\Framework\Attributes\TestWith;
 use PHPUnit\Framework\TestCase;
 use ReflectionClass;
 use stdClass;
@@ -1317,6 +1318,23 @@ public function testConnectionManagement()
         $this->assertSame('bar', $model->getConnection());
     }
 
+    #[TestWith(['Foo'])]
+    #[TestWith([ConnectionName::Foo])]
+    #[TestWith([ConnectionNameBacked::Foo])]
+    public function testConnectionEnums(string|\UnitEnum $connectionName)
+    {
+        EloquentModelStub::setConnectionResolver($resolver = m::mock(ConnectionResolverInterface::class));
+        $model = new EloquentModelStub;
+
+        $retval = $model->setConnection($connectionName);
+        $this->assertEquals($retval, $model);
+        $this->assertSame('Foo', $model->getConnectionName());
+
+        $resolver->shouldReceive('connection')->once()->with('Foo')->andReturn('bar');
+
+        $this->assertSame('bar', $model->getConnection());
+    }
+
     public function testToArray()
     {
         $model = new EloquentModelStub;
@@ -4432,3 +4450,13 @@ public function __toString()
         return $this->cast;
     }
 }
+
+enum ConnectionName {
+    case Foo;
+    case Bar;
+}
+
+enum ConnectionNameBacked : string {
+    case Foo = 'Foo';
+    case Bar = 'Bar';
+}