/**
* This method tests the "nvl" method.
*/
public function test_nvl()
{
$x = IArrayList\Type::make(array(1, 2, 3), '\\Saber\\Data\\IInt32\\Type');
$y = IArrayList\Type::empty_();
$z = IArrayList\Module::nvl($x, $y);
$this->assertInstanceOf('\\Saber\\Data\\IArrayList\\Type', $z);
$this->assertSame(array(1, 2, 3), $z->unbox(1));
$z = IArrayList\Module::nvl(null, $x);
$this->assertInstanceOf('\\Saber\\Data\\IArrayList\\Type', $z);
$this->assertSame(array(1, 2, 3), $z->unbox(1));
$z = IArrayList\Module::nvl(null, null);
$this->assertInstanceOf('\\Saber\\Data\\IArrayList\\Type', $z);
$this->assertSame(array(), $z->unbox(1));
}
/**
* This method returns the either as an array.
*
* @access public
* @final
* @return IArrayList\Type the either as an array list
*/
public final function toArrayList() : IArrayList\Type
{
return $this->either->__isLeft() ? IArrayList\Type::box(array($this->either->item())) : IArrayList\Type::empty_();
}
/**
* This method returns the latter value should the former value evaluates
* to null.
*
* @access public
* @static
* @param IArrayList\Type $xs the value to be evaluated
* @param IArrayList\Type $ys the default value
* @return IArrayList\Type the result
*/
public static function nvl(IArrayList\Type $xs = null, IArrayList\Type $ys = null) : IArrayList\Type
{
return $xs ?? $ys ?? IArrayList\Type::empty_();
}
/**
* This method tests the "empty" method.
*/
public function test_empty()
{
$p0 = IArrayList\Type::empty_();
$this->assertInstanceOf('\\Saber\\Data\\IArrayList\\Type', $p0);
$this->assertCount(0, $p0->unbox());
}
/**
* This method returns the list as an array.
*
* @access public
* @static
* @param ILinkedList\Type $xs the operand
* @return IArrayList\Type the list as an array list
*/
public static function toArrayList(ILinkedList\Type $xs) : IArrayList\Type
{
return ILinkedList\Module::foldLeft($xs, function (IArrayList\Type $c, Core\Type $x) {
return IArrayList\Module::append($c, $x);
}, IArrayList\Type::empty_());
}
