/**
* returns sequence of parameters of a function or method
*
* @param string|object|array|\ReflectionFunctionAbstract $classOrFunction something that references a function or a class
* @param string $methodName optional name of method in case first param references a class
* @return \stubbles\sequence\Sequence
* @throws \InvalidArgumentException
* @since 5.3.0
*/
function parametersOf($classOrFunction, string $methodName = null) : Sequence
{
if (!$classOrFunction instanceof \ReflectionFunctionAbstract) {
$function = reflect($classOrFunction, $methodName);
if (!$function instanceof \ReflectionFunctionAbstract) {
throw new \InvalidArgumentException('Given function must be a function name, a method' . ' reference or an instance of \\ReflectionFunctionAbstract');
}
} else {
$function = $classOrFunction;
}
return Sequence::of($function->getParameters())->mapKeys(function ($key, \ReflectionParameter $parameter) {
return $parameter->getName();
});
}
/**
* @test
*/
public function toMapPassesKeyAndValueWhenNoSelectorProvided()
{
assert(Sequence::of($this->people)->collect()->inMap(), equals($this->people));
}
/**
* @test
*/
public function exportsSequenceAsStringRepresentation()
{
assert(Provides::values([1])->describeValue(exporter(), Sequence::of([])), equals(Sequence::class . ' of array'));
}
/**
* @test
*/
public function partitioningByWithSum()
{
assert(Sequence::of($this->people)->collect()->inPartitions(function (Employee $e) {
return $e->years() > 10;
}, Collector::forSum(function (Employee $e) {
return $e->years();
})), equals([true => 29, false => 4]));
}
/**
* @test
* @since 5.3.2
*/
public function canBeSerializedToJson()
{
assert(json_encode(Sequence::of(['one' => 1, 2, 'three' => 3, 4])), equals('{"one":1,"0":2,"three":3,"1":4}'));
}
/**
* @test
*/
public function containsReferenceToBothLimitAndSkippedElements()
{
assert((string) Sequence::infinite(1, function ($i) {
return ++$i;
})->skip(2)->limit(3), equals(Sequence::class . ' starting at 1 continued by a lambda function' . ' skipped until offset 2 limited to 3 elements'));
}
