/**
*/
public function testTwips()
{
$value = rand(1, 100);
// Centimeters
$this->assertEquals(0, Drawing::centimetersToTwips());
$this->assertEquals($value * 566.928, Drawing::centimetersToTwips($value));
$this->assertEquals(0, Drawing::twipsToCentimeters());
$this->assertEquals($value / 566.928, Drawing::twipsToCentimeters($value));
// Inches
$this->assertEquals(0, Drawing::inchesToTwips());
$this->assertEquals($value * 1440, Drawing::inchesToTwips($value));
$this->assertEquals(0, Drawing::twipsToInches());
$this->assertEquals($value / 1440, Drawing::twipsToInches($value));
// Pixels
$this->assertEquals(0, Drawing::twipsToPixels());
$this->assertEquals(round($value / 15.873984), Drawing::twipsToPixels($value));
}