describe("->key()", function () {
it("returns current key", function () {
$collection = new Collection(['data' => [1, 2, 3, 4, 5]]);
$value = $collection->key();
expect($value)->toBe(0);
});
it("returns null if non valid", function () {
$collection = new Collection();
$value = $collection->key();
expect($value)->toBe(null);
});
});
describe("->current()", function () {
it("returns the current value", function () {
$collection = new Collection(['data' => [1, 2, 3, 4, 5]]);
$value = $collection->current();
expect($value)->toBe(1);
});
});
describe("->next()", function () {
it("returns the next value", function () {
$collection = new Collection(['data' => [1, 2, 3, 4, 5]]);
$value = $collection->next();
expect($value)->toBe(2);
});
});
describe("->prev()", function () {
it("navigates through collection", function () {
$collection = new Collection(['data' => [1, 2, 3]]);
$collection->rewind();
expect($collection->next())->toBe(2);