IsNullConstraintTest.php

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<?php

declare(strict_types=1);

use ILIAS\Refinery\Factory as Refinery;
use ILIAS\Data\Factory as DataFactory;
use PHPUnit\Framework\TestCase;

class IsNullConstraintTest extends TestCase
{
    private DataFactory $df;
    private ilLanguage $lng;
    private Refinery $f;
    private \ILIAS\Refinery\Constraint $c;

    protected function setUp(): void
    {
        $this->df = new DataFactory();
        $this->lng = $this->createMock(ilLanguage::class);
        $this->f = new Refinery($this->df, $this->lng);

        $this->c = $this->f->null();
    }

    public function testAccepts(): void
    {
        $this->assertTrue($this->c->accepts(null));
    }

    public function testNotAccepts(): void
    {
        $this->assertFalse($this->c->accepts(2));
    }

    public function testCheckSucceed(): void
    {
        $this->c->check(null);
        $this->assertTrue(true); // does not throw
    }

    public function testCheckFails(): void
    {
        $this->expectException(UnexpectedValueException::class);
        $this->c->check(2);
    }

    public function testNoProblemWith(): void
    {
        $this->assertNull($this->c->problemWith(null));
    }

    public function testProblemWith(): void
    {
        $this->lng
            ->expects($this->once())
            ->method("txt")
            ->with("not_a_null")
            ->willReturn("-%s-");

        $this->assertEquals("-integer-", $this->c->problemWith(2));
    }

    public function testRestrictOk(): void
    {
        $ok = $this->df->ok(null);

        $res = $this->c->applyTo($ok);
        $this->assertTrue($res->isOk());
    }

    public function testRestrictNotOk(): void
    {
        $not_ok = $this->df->ok(2);

        $res = $this->c->applyTo($not_ok);
        $this->assertFalse($res->isOk());
    }

    public function testRestrictError(): void
    {
        $error = $this->df->error("error");

        $res = $this->c->applyTo($error);
        $this->assertSame($error, $res);
    }

    public function testWithProblemBuilder(): void
    {
        $new_c = $this->c->withProblemBuilder(static function (): string {
            return "This was a fault";
        });
        $this->assertEquals("This was a fault", $new_c->problemWith(2));
    }
}