$countries = Cache::get("countries", function() {{
expensive computation that returns a list of countries
return Country:all();
})
public static function get($key, $function = null)
{
if (!self::contains($key) && $function) {
self::put($key, call_user_func($function));
}
return Arrays::getValue(self::$_cache, $key);
} /**
* @test
*/
public function shouldCacheNullValues()
{
//given
$function = function () {
++CacheTest::$call_count;
return null;
};
//when
$result1 = Cache::get("id", $function);
$result2 = Cache::get("id", $function);
//then
$this->assertEquals(1, CacheTest::$call_count);
$this->assertNull($result1);
$this->assertNull($result2);
}
