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<?php declare(strict_types=1);
/*
* This file is part of sebastian/type.
*
* (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 SebastianBergmann\Type;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\Attributes\Small;
use PHPUnit\Framework\TestCase;
#[CoversClass(NullType::class)]
#[CoversClass(Type::class)]
#[Small]
final class NullTypeTest extends TestCase
{
private NullType $type;
/**
* @return non-empty-list<array{0: Type}>
*/
public static 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],
];
}
/**
* @return non-empty-array<non-empty-string, array{0: Type}>
*/
public static function notAssignableTypes(): array
{
return [
'void' => [new VoidType],
];
}
protected function setUp(): void
{
$this->type = new NullType;
}
#[DataProvider('assignableTypes')]
public function testIsAssignable(Type $assignableType): void
{
$this->assertTrue($this->type->isAssignable($assignableType));
}
#[DataProvider('notAssignableTypes')]
public function testIsNotAssignable(Type $assignedType): void
{
$this->assertFalse($this->type->isAssignable($assignedType));
}
public function testAllowsNull(): void
{
$this->assertTrue($this->type->allowsNull());
}
public function testHasName(): void
{
$this->assertSame('null', $this->type->name());
}
public function testCanBeRepresentedAsString(): void
{
$this->assertSame('null', $this->type->asString());
}
public function testCanBeQueriedForType(): void
{
/** @phpstan-ignore method.alreadyNarrowedType */
$this->assertTrue($this->type->isNull());
$this->assertFalse($this->type->isCallable());
$this->assertFalse($this->type->isFalse());
$this->assertFalse($this->type->isGenericObject());
$this->assertFalse($this->type->isIntersection());
$this->assertFalse($this->type->isIterable());
$this->assertFalse($this->type->isMixed());
$this->assertFalse($this->type->isNever());
$this->assertFalse($this->type->isObject());
$this->assertFalse($this->type->isSimple());
$this->assertFalse($this->type->isStatic());
$this->assertFalse($this->type->isTrue());
$this->assertFalse($this->type->isUnion());
$this->assertFalse($this->type->isUnknown());
$this->assertFalse($this->type->isVoid());
}
}
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