<?php
/**
 * Flight: An extensible micro-framework.
 *
 * @copyright   Copyright (c) 2012, Mike Cao <mike@mikecao.com>
 * @license     MIT, http://flightphp.com/license
 */
class CollectionTest extends PHPUnit\Framework\TestCase
{
	/**
	 * @var \flight\util\Collection
	 */
	private $collection;

	protected function setUp(): void
	{
		$this->collection = new \flight\util\Collection(['a' => 1, 'b' => 2]);
	}

	// Get an item
	public function testGet()
	{
		$this->assertEquals(1, $this->collection->a);
	}

	// Set an item
	public function testSet()
	{
		$this->collection->c = 3;
		$this->assertEquals(3, $this->collection->c);
	}

	// Check if an item exists
	public function testExists()
	{
		$this->assertTrue(isset($this->collection->a));
	}

	// Unset an item
	public function testUnset()
	{
		unset($this->collection->a);
		$this->assertFalse(isset($this->collection->a));
	}

	// Count items
	public function testCount()
	{
		$this->assertEquals(2, count($this->collection));
	}

	// Iterate through items
	public function testIterate()
	{
		$items = [];
		foreach ($this->collection as $key => $value) {
			$items[$key] = $value;
		}

		$this->assertEquals(['a' => 1, 'b' => 2], $items);
	}

	public function testJsonSerialize()
	{
		$this->assertEquals(['a' => 1, 'b' => 2], $this->collection->jsonSerialize());
	}

	public function testOffsetSetWithNullOffset() {
		$this->collection->offsetSet(null, 3);
		$this->assertEquals(3, $this->collection->offsetGet(0));
	}

	public function testOffsetExists() {
		$this->collection->a = 1;
		$this->assertTrue($this->collection->offsetExists('a'));
	}

	public function testOffsetUnset() {
		$this->collection->a = 1;
		$this->assertTrue($this->collection->offsetExists('a'));
		$this->collection->offsetUnset('a');
		$this->assertFalse($this->collection->offsetExists('a'));
	}

	public function testKeys() {
		$this->collection->a = 1;
		$this->collection->b = 2;
		$this->assertEquals(['a', 'b'], $this->collection->keys());
	}

	public function testClear() {
		$this->collection->a = 1;
		$this->collection->b = 2;
		$this->assertEquals(['a', 'b'], $this->collection->keys());
		$this->collection->clear();
		$this->assertEquals(0, $this->collection->count());
	}
}