assertThat()

assertThat()

More complex assertions can be formulated using the PHPUnit_Framework_Constraint classes. They can be evaluated using the assertThat() method. Example A.49 shows how the logicalNot() and equalTo() constraints can be used to express the same assertion as assertNotEquals().

assertThat(mixed $value, PHPUnit_Framework_Constraint $constraint[, $message = ''])

Reports an error identified by $message if the $value does not match the $constraint.

<?php
use PHPUnit\Framework\TestCase;

class BiscuitTest extends TestCase
{
    public function testEquals()
    {
        $theBiscuit = new Biscuit('Ginger');
        $myBiscuit  = new Biscuit('Ginger');

        $this->assertThat(
          $theBiscuit,
          $this->logicalNot(
            $this->equalTo($myBiscuit)
          )
        );
    }
}
?>

Table A.1 shows the available PHPUnit_Framework_Constraint classes.