/**
* Tests Arr::previous_by_key()
*
* @test
*/
public function test_previous_by_key()
{
// our test array
$arr = array(2 => 'A', 4 => 'B', 6 => 'C');
// test: key not found in array
$expected = false;
$test = \Arr::previous_by_key($arr, 1);
$this->assertTrue($expected === $test);
// test: no previous key
$expected = null;
$test = \Arr::previous_by_key($arr, 2);
$this->assertTrue($expected === $test);
// test: strict key comparison
$expected = false;
$test = \Arr::previous_by_key($arr, '2', false, true);
$this->assertTrue($expected === $test);
// test: get previous key
$expected = 2;
$test = \Arr::previous_by_key($arr, 4);
$this->assertTrue($expected === $test);
// test: get previous value
$expected = 'A';
$test = \Arr::previous_by_key($arr, 4, true);
$this->assertTrue($expected === $test);
}
public static function convert_img_size_down($size, $type = 'm')
{
$size = strtoupper($size);
$sizes = conf('upload.types.img.types.' . $type . '.sizes');
if (!array_key_exists($size, $sizes)) {
return false;
}
return Arr::previous_by_key($sizes, $size);
}