public function test_calculate_percentage()
{
$this->assertEquals(100.0, util::calculate_percentage(100, 100));
$this->assertEquals(50.0, util::calculate_percentage(50, 100));
$this->assertEquals(0.0, util::calculate_percentage(0, 100));
$this->assertEquals(200.0, util::calculate_percentage(200, 100));
$this->assertEquals(50, util::calculate_percentage(50, 100, 0));
$this->assertEquals(50.0, util::calculate_percentage(50, 100, 1));
$this->assertEquals(50.0, util::calculate_percentage(50, 100, 2));
$this->assertEquals(50.0, util::calculate_percentage(50, 100, 4));
$this->assertEquals(50, util::calculate_percentage(50, 100, 0, ','));
$this->assertEquals('50,0', util::calculate_percentage(50, 100, 1, ','));
$this->assertEquals('50,00', util::calculate_percentage(50, 100, 2, ','));
$this->assertEquals('50,0000', util::calculate_percentage(50, 100, 4, ','));
$this->assertEquals(50, util::calculate_percentage(50, 100, 0, ','));
$this->assertEquals('50,0', util::calculate_percentage(50, 100, 1, ','));
$this->assertEquals('50,00', util::calculate_percentage(50, 100, 2, ','));
$this->assertEquals('50,0000', util::calculate_percentage(50, 100, 4, ','));
}
