/**
* @test
*/
public function shouldNegate()
{
//given
$function = FluentFunctions::startsWith("start")->negate();
//when
$result = Functions::call($function, "starts with prefix");
//then
$this->assertFalse($result);
}
/**
* @test
*/
public function shouldReturnOrForAbsentMap()
{
//given
$optional = Optional::fromNullable(null);
$closure = FluentFunctions::extractField('myField')->append('!!!');
//when
$result = $optional->map($closure)->or('def');
//then
$this->assertEquals('def', $result);
}
/**
* @test
*/
public function shouldFilterIteratorElements()
{
//given
$iterator = new \ArrayIterator(array('a', 'pref_a', 'pref_b', 'b'));
//when
$result = FluentIterator::from($iterator)->filter(FluentFunctions::startsWith('pref'))->reindex();
//then
$this->assertEquals(array('pref_a', 'pref_b'), $result->toArray());
}
