public function testMap()
{
$array = ["a" => 1, "b" => 2, "c" => 3];
$map = new Map($array);
$highLevelFunction = function ($pow) {
return function ($item) use($pow) {
return pow($item, $pow);
};
};
$filtered = $map->map($highLevelFunction(2));
$this->assertTrue($filtered instanceof Map);
$this->assertEquals($array, $map->toArray());
$this->assertEquals(3, $filtered->count());
$this->assertEquals(1, $filtered->get("a"));
$this->assertEquals(4, $filtered->get("b"));
$this->assertEquals(9, $filtered->get("c"));
}
