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<?php

/*

 * Copyright 2016 Google Inc.

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

namespace Google\Auth\Tests;

use Google\Auth\Cache\MemoryCacheItemPool;

use Psr\Cache\InvalidArgumentException;

class MemoryCacheItemPoolTest extends \PHPUnit_Framework_TestCase

{

    private $pool;

    public function setUp()

    {

        $this->pool = new MemoryCacheItemPool();

    }

    public function saveItem($key, $value)

    {

        $item = $this->pool->getItem($key);

        $item->set($value);

        $this->assertTrue($this->pool->save($item));

        return $item;

    }

    public function testGetsFreshItem()

    {

        $item = $this->pool->getItem('item');

        $this->assertInstanceOf('Google\Auth\Cache\Item', $item);

        $this->assertNull($item->get());

        $this->assertFalse($item->isHit());

    }

    public function testGetsExistingItem()

    {

        $key = 'item';

        $value = 'value';

        $this->saveItem($key, $value);

        $item = $this->pool->getItem($key);

        $this->assertInstanceOf('Google\Auth\Cache\Item', $item);

        $this->assertEquals($value, $item->get());

        $this->assertTrue($item->isHit());

    }

    public function testGetsMultipleItems()

    {

        $keys = ['item1', 'item2'];

        $items = $this->pool->getItems($keys);

        $this->assertEquals($keys, array_keys($items));

        $this->assertContainsOnlyInstancesOf('Google\Auth\Cache\Item', $items);

    }

    public function testHasItem()

    {

        $existsKey = 'does-exist';

        $this->saveItem($existsKey, 'value');

        $this->assertTrue($this->pool->hasItem($existsKey));

        $this->assertFalse($this->pool->hasItem('does-not-exist'));

    }

    public function testClear()

    {

        $key = 'item';

        $this->saveItem($key, 'value');

        $this->assertTrue($this->pool->hasItem($key));

        $this->assertTrue($this->pool->clear());

        $this->assertFalse($this->pool->hasItem($key));

    }

    public function testDeletesItem()

    {

        $key = 'item';

        $this->saveItem($key, 'value');

        $this->assertTrue($this->pool->deleteItem($key));

        $this->assertFalse($this->pool->hasItem($key));

    }

    public function testDeletesItems()

    {

        $keys = ['item1', 'item2'];

        foreach ($keys as $key) {

            $this->saveItem($key, 'value');

        }

        $this->assertTrue($this->pool->deleteItems($keys));

        $this->assertFalse($this->pool->hasItem($keys[0]));

        $this->assertFalse($this->pool->hasItem($keys[1]));

    }

    public function testDoesNotDeleteItemsWithInvalidKey()

    {

        $keys = ['item1', '{item2}', 'item3'];

        $value = 'value';

        $this->saveItem($keys[0], $value);

        $this->saveItem($keys[2], $value);

        try {

            $this->pool->deleteItems($keys);

        } catch (InvalidArgumentException $ex) {

            // continue execution

        }

        $this->assertTrue($this->pool->hasItem($keys[0]));

        $this->assertTrue($this->pool->hasItem($keys[2]));

    }

    public function testSavesItem()

    {

        $key = 'item';

        $this->saveItem($key, 'value');

        $this->assertTrue($this->pool->hasItem($key));

    }

    public function testSavesDeferredItem()

    {

        $item = $this->pool->getItem('item');

        $this->assertTrue($this->pool->saveDeferred($item));

    }

    public function testCommitsDeferredItems()

    {

        $keys = ['item1', 'item2'];

        foreach ($keys as $key) {

            $item = $this->pool->getItem($key);

            $item->set('value');

            $this->pool->saveDeferred($item);

        }

        $this->assertTrue($this->pool->commit());

        $this->assertTrue($this->pool->hasItem($keys[0]));

        $this->assertTrue($this->pool->hasItem($keys[1]));

    }

    /**

     * @expectedException \Psr\Cache\InvalidArgumentException

     * @dataProvider invalidKeys

     */

    public function testCheckInvalidKeys($key)

    {

        $this->pool->getItem($key);

        $this->pool->getItems([$key]);

        $this->pool->hasItem($key);

        $this->pool->deleteItem($key);

        $this->pool->deleteItems([$key]);

    }

    public function invalidKeys()

    {

        return [

            [1],

            [true],

            [null],

            [new \DateTime()],

            ['{'],

            ['}'],

            ['('],

            [')'],

            ['/'],

            ['\\'],

            ['@'],

            [':'],

            [[]]

        ];

    }

}