/**
* This method tests the "signum" method.
*
* @dataProvider data_signum
*/
public function test_signum(array $provided, array $expected)
{
$p0 = IDouble\Module::signum(IDouble\Type::box($provided[0]), IDouble\Type::box($provided[1]));
$e0 = $expected[0];
$this->assertInstanceOf('\\Saber\\Data\\ITrit\\Type', $p0);
$this->assertSame($e0, $p0->unbox());
}