public function testConstants()
{
$this->assertSame(\Test\TestInterface::C1, null);
$this->assertSame(\Test\TestInterface::C2, false);
$this->assertSame(\Test\TestInterface::C3, true);
$this->assertSame(\Test\TestInterface::C4, 10);
$this->assertSame(\Test\TestInterface::C5, 10.25);
$this->assertSame(\Test\TestInterface::C6, 'test');
}