Added more tests for when property or mutator is null

Author: siamak2

tests/MetableTest.php

@@ -32,6 +32,7 @@ public static function setUpBeforeClass(): void {
 			$table->string( 'email' )->default( '[email protected]' );
 			$table->string( 'password' )->nullable();
 			$table->string( 'state' )->nullable();
+			$table->string( 'null_value' )->nullable();
 			$table->integer( 'user_test_id' )->unsigned()->nullable();
 			$table->foreign( 'user_test_id' )->references( 'id' )->on( 'user_tests' );
 			$table->timestamps();
@@ -113,6 +114,21 @@ public function testFluentMeta() {
 		$this->assertTrue( $user->isMetaDirty( 'foo', 'bar' ), 'isMetaDirty should return true even if one of metas has changed' );
 		$this->assertTrue( $user->isMetaDirty( 'foo,bar' ), 'isMetaDirty should return true even if one of metas has changed' );
 
+		//re retrieve user from database
+		/** @var UserTest $user */
+		$user = UserTest::find( $user->id );
+		
+		$this->assertNull( $user->null_value, 'null_value property should be null' );
+		$this->assertNull( $user->null_cast, 'null_cast property should be null' );
+		
+		$user->setMeta( 'null_value', true );
+		$user->setMeta( 'null_cast', true );
+		
+		$this->assertTrue( $user->getMeta( 'null_value' ), 'Meta should be set' );
+		$this->assertTrue( $user->getMeta( 'null_cast' ), 'Meta should be set' );
+		$this->assertNull( $user->null_value, 'null_value property should be null' );
+		$this->assertNull( $user->null_cast, 'null_cast property should be null' );
+		
 		$user->delete();
 
 		$this->assertEquals( 0, $metaData->count(), 'Meta should be deleted from database after deleting user.' );

tests/Models/UserTest.php

@@ -21,11 +21,15 @@ class UserTest extends Model
 	public $hideMeta = false;
 
 	public $disableFluentMeta = false;
-
+	
 	protected $casts = [
 		'state' => UserCastedObject::class,
 	];
 
+	public function getNullCastAttribute() {
+		return null;
+	}
+	
 	/**
 	 * This is dummy relation to itself.
 	 *