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NullTypeTest.php
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NullTypeTest.php
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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Framework\MockObject;
use PHPUnit\Framework\TestCase;
final class NullTypeTest extends TestCase
{
/**
* @dataProvider assignableTypes
*/
public function testIsAssignable(Type $assignableType): void
{
$type = new NullType();
$this->assertTrue($type->isAssignable($assignableType));
}
public function assignableTypes(): array
{
return [
[new SimpleType('int', false)],
[new SimpleType('int', true)],
[new ObjectType(TypeName::fromQualifiedName(self::class), false)],
[new ObjectType(TypeName::fromQualifiedName(self::class), true)],
[new UnknownType()],
];
}
/**
* @dataProvider notAssignable
*/
public function testIsNotAssignable(Type $assignedType): void
{
$type = new NullType();
$this->assertFalse($type->isAssignable($assignedType));
}
public function notAssignable(): array
{
return [
'void' => [new VoidType()],
];
}
public function testAllowsNull(): void
{
$type = new NullType();
$this->assertTrue($type->allowsNull());
}
public function testReturnTypeDeclaration(): void
{
$type = new NullType();
$this->assertEquals('', $type->getReturnTypeDeclaration());
}
}