/**
* Initializes a new instance of that class.
*
* @param IEnumerable $seq The inner sequence.
* @param callable $keySelector The key selector to use.
*
* @throws ArgumentException $keySelector is no valid callable / lambda expression.
* @throws ArgumentNullException $keySelector is (null).
*/
public function __construct(IEnumerable $seq, $keySelector)
{
if (null === $keySelector) {
throw new ArgumentNullException('keySelector');
}
$this->_keySelector = Object::asCallable($keySelector);
$this->_seq = $seq;
}
/**
* Initializes a new instance of that class.
*
* @param IEnumerable $seq The inner sequence.
* @param callable $keySelector The key selector to use.
* @param callable $valueSelector The value / item selector to use.
*
* @throws ArgumentNullException $keySelector is (null).
*/
public function __construct(IEnumerable $seq, $keySelector, $valueSelector)
{
if (null === $valueSelector) {
throw new ArgumentNullException('valueSelector');
}
$this->_valueSelector = Object::asCallable($valueSelector);
parent::__construct($seq, $keySelector);
}
public function testCallable()
{
$callableTypes = ['callable', 'function', \Closure::class];
foreach ($this->createSumFunctions() as $sumFunc) {
foreach ($callableTypes as $targetType) {
/* @var callable $func1 */
/* @var callable $func2 */
/* @var callable $func3 */
/* @var callable $func4 */
/* @var callable $func5 */
$obj1 = new ValueWrapper('1');
$obj2 = new ValueWrapper(2);
$obj3 = new ValueWrapper(3.0);
$obj4 = new ValueWrapper(4.5);
$obj5 = new ValueWrapper(Object::asCallable($sumFunc));
$this->assertSame('1', $obj1->getWrappedValue());
$this->assertSame(2, $obj2->getWrappedValue());
$this->assertSame(3.0, $obj3->getWrappedValue());
$this->assertSame(4.5, $obj4->getWrappedValue());
$this->assertTrue(is_callable($obj5->getWrappedValue()));
$func1 = $obj1->toType($targetType);
$func2 = $obj2->toType($targetType);
$func3 = $obj3->toType($targetType);
$func4 = $obj4->toType($targetType);
$func5 = $obj5->toType($targetType);
$this->assertTrue(is_callable($func1));
$this->assertTrue(is_callable($func2));
$this->assertTrue(is_callable($func3));
$this->assertTrue(is_callable($func4));
$this->assertTrue(is_callable($func5));
$this->assertSame($func1(), $obj1->getWrappedValue());
$this->assertSame($func2(), $obj2->getWrappedValue());
$this->assertSame($func3(), $obj3->getWrappedValue());
$this->assertSame($func4(), $obj4->getWrappedValue());
$this->assertSame(6.5, $func5(2, 4.5));
}
}
}
