expect($result->data())->toBe([1, 2, 3, 4, 5]);
});
it("sorts a collection using a compare function", function () {
$collection = new Collection(['data' => ['Alan', 'Dave', 'betsy', 'carl']]);
$result = $collection->sort('strcasecmp');
expect($result->data())->toBe(['Alan', 'betsy', 'carl', 'Dave']);
});
it("sorts a collection by keys", function () {
$collection = new Collection(['data' => [5 => 6, 3 => 7, 4 => 8, 1 => 9, 2 => 10]]);
$result = $collection->sort(null, 'ksort');
expect($result->keys())->toBe([1, 2, 3, 4, 5]);
});
it("throws an exception if the sort function is not callable", function () {
$closure = function () {
$collection = new Collection(['data' => [1, 2, 3, 4, 5]]);
$collection->sort(null, 'mysort');
};
expect($closure)->toThrow(new InvalidArgumentException("The passed parameter is not a valid sort function."));
});
});
describe("->offsetExists()", function () {
it("returns true if a element exist", function () {
$collection = new Collection();
$collection[] = 'foo';
$collection[] = null;
expect(isset($collection[0]))->toBe(true);
expect(isset($collection[1]))->toBe(true);
});
it("returns false if a element doesn't exist", function () {
$collection = new Collection();
expect(isset($collection[0]))->toBe(false);
