public function testFnCacheResult()
{
$data = array(1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3);
$count = 0;
$scale = 2;
$fn = FnGen::fnCacheResult(function ($value) use(&$count, $scale) {
$count += 1;
return $value * $scale;
});
foreach ($data as $value) {
$this->assertEquals($value * $scale, $fn($value));
}
$this->assertEquals(count(array_unique($data)), $count);
$data = array('one', 'One', 'oNe', 'onE', 'two', 'tWo');
$count = 0;
$scale = 2;
$fnToUpper = FnString::fnToUpper();
$fn = FnGen::fnCacheResult(function ($value) use(&$count, $scale, $fnToUpper) {
$count += 1;
return $fnToUpper($value);
}, $fnToUpper);
foreach ($data as $value) {
$this->assertEquals($fnToUpper($value), $fn($value));
}
$this->assertEquals(count(array_unique(array_map($fnToUpper, $data))), $count);
}
