function it_calls_first_converter_in_chain_calls(ConverterInterface $first, ConverterInterface $second, ConverterInterface $third)
{
$first->convert('some_specific_value')->willReturn(false)->shouldBeCalled();
$second->convert('some_specific_value')->willReturn('expected_result')->shouldBeCalled();
$third->convert(Argument::any())->shouldNotBeCalled();
$this->beConstructedWith([$first, $second, $third]);
$this->convert('some_specific_value')->shouldReturn('expected_result');
}
/**
* Converts value into string for cache key
*
* In case if value is not convertible, it should return false
*
* @param mixed $value
*
* @return string|bool
*/
public function convert($value)
{
if (!is_array($value)) {
return false;
}
if (empty($value)) {
return false;
}
$result = '';
foreach ($value as $key => $item) {
if (!is_scalar($item)) {
return false;
}
if (empty($key) && !is_int($key) && empty($item) && !is_int($item)) {
return false;
}
$result .= $this->converter->convert($key) . '_' . $this->converter->convert($item) . '_';
}
return rtrim($result, '_');
}
