'1x.png 1x, 1_5x.png 1.5x, 2x.png 2x',
'pixel depth keys may omit a trailing "x"'
],
+ [
+ [ '1' => 'small.png', '1.5' => 'large.png', '2' => 'large.png' ],
+ 'small.png 1x, large.png 1.5x',
+ 'omit larger duplicates'
+ ],
+ [
+ [ '1' => 'small.png', '2' => 'large.png', '1.5' => 'large.png' ],
+ 'small.png 1x, large.png 1.5x',
+ 'omit larger duplicates in irregular order'
+ ],
];
}