<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

/**
 * \Magento\Framework\Cache\Core test case
 */
namespace Magento\Framework\Cache\Test\Unit;

class CoreTest extends \PHPUnit\Framework\TestCase
{
    /**
     * @var \Magento\Framework\Cache\Core
     */
    protected $_core;

    /**
     * @var array
     */
    protected static $_cacheStorage = [];

    /**
     * Selected mock of \Zend_Cache_Backend_File to have extended
     * \Zend_Cache_Backend and implemented \Zend_Cache_Backend_Interface
     *
     * @var \Zend_Cache_Backend_File
     */
    protected $_mockBackend;

    protected function setUp()
    {
        $this->_mockBackend = $this->createMock(\Zend_Cache_Backend_File::class);
    }

    protected function tearDown()
    {
        unset($this->_mockBackend);
    }

    public function testSetBackendDefault()
    {
        $core = new \Magento\Framework\Cache\Core();
        $core->setBackend($this->_mockBackend);

        $this->assertNotInstanceOf(
            \Magento\Framework\Cache\Backend\Decorator\AbstractDecorator::class,
            $core->getBackend()
        );
        $this->assertEquals($this->_mockBackend, $core->getBackend());
    }

    /**
     * @dataProvider setBackendExceptionProvider
     * @expectedException \Zend_Cache_Exception
     */
    public function testSetBackendException($decorators)
    {
        $core = new \Magento\Framework\Cache\Core(['backend_decorators' => $decorators]);
        $core->setBackend($this->_mockBackend);
    }

    /**
     * @return array
     */
    public function setBackendExceptionProvider()
    {
        return [
            'string' => ['string'],
            'decorator setting is not an array' => [['decorator' => 'string']],
            'decorator setting is empty array' => [['decorator' => []]],
            'no class index in array' => [['decorator' => ['somedata']]],
            'non-existing class passed' => [['decorator' => ['class' => 'NonExistingClass']]]
        ];
    }

    public function testSaveDisabled()
    {
        $backendMock = $this->createMock(\Zend_Cache_Backend_BlackHole::class);
        $backendMock->expects($this->never())->method('save');
        $frontend = new \Magento\Framework\Cache\Core(['disable_save' => true]);
        $frontend->setBackend($backendMock);
        $result = $frontend->save('data', 'id');
        $this->assertTrue($result);
    }

    public function testSaveNoCaching()
    {
        $backendMock = $this->createMock(\Zend_Cache_Backend_BlackHole::class);
        $backendMock->expects($this->never())->method('save');
        $frontend = new \Magento\Framework\Cache\Core(['disable_save' => false, 'caching' => false]);
        $frontend->setBackend($backendMock);
        $result = $frontend->save('data', 'id');
        $this->assertTrue($result);
    }

    public function testSave()
    {
        $data = 'data';
        $tags = ['abc', '!def', '_ghi'];
        $prefix = 'prefix_';
        $prefixedTags = ['prefix_abc', 'prefix__def', 'prefix__ghi'];

        $backendMock = $this->createMock(\Zend_Cache_Backend_BlackHole::class);
        $backendMock->expects($this->once())
            ->method('save')
            ->with($data, $this->anything(), $prefixedTags)
            ->will($this->returnValue(true));
        $frontend = new \Magento\Framework\Cache\Core([
            'disable_save'              => false,
            'caching'                   => true,
            'cache_id_prefix'           => $prefix,
            'automatic_cleaning_factor' => 0,
            'write_control'             => false,
        ]);
        $frontend->setBackend($backendMock);
        $result = $frontend->save($data, 'id', $tags);
        $this->assertTrue($result);
    }

    public function testClean()
    {
        $mode = 'all';
        $tags = ['abc', '!def', '_ghi'];
        $prefix = 'prefix_';
        $prefixedTags = ['prefix_abc', 'prefix__def', 'prefix__ghi'];
        $expectedResult = true;

        $backendMock = $this->createMock(\Zend_Cache_Backend_BlackHole::class);
        $backendMock->expects($this->once())
            ->method('clean')
            ->with($mode, $prefixedTags)
            ->will($this->returnValue($expectedResult));
        $frontend = new \Magento\Framework\Cache\Core([
            'caching'         => true,
            'cache_id_prefix' => $prefix,
        ]);
        $frontend->setBackend($backendMock);

        $result = $frontend->clean($mode, $tags);
        $this->assertEquals($expectedResult, $result);
    }

    public function testGetIdsMatchingTags()
    {
        $tags = ['abc', '!def', '_ghi'];
        $prefix = 'prefix_';
        $prefixedTags = ['prefix_abc', 'prefix__def', 'prefix__ghi'];
        $ids = ['id', 'id2', 'id3'];

        $backendMock = $this->createMock(\Magento\Framework\Cache\Test\Unit\CoreTestMock::class);
        $backendMock->expects($this->once())
            ->method('getIdsMatchingTags')
            ->with($prefixedTags)
            ->will($this->returnValue($ids));
        $backendMock->expects($this->any())
            ->method('getCapabilities')
            ->will($this->returnValue(['tags' => true]));
        $frontend = new \Magento\Framework\Cache\Core([
            'caching'         => true,
            'cache_id_prefix' => $prefix,
        ]);
        $frontend->setBackend($backendMock);

        $result = $frontend->getIdsMatchingTags($tags);
        $this->assertEquals($ids, $result);
    }

    public function testGetIdsNotMatchingTags()
    {
        $tags = ['abc', '!def', '_ghi'];
        $prefix = 'prefix_';
        $prefixedTags = ['prefix_abc', 'prefix__def', 'prefix__ghi'];
        $ids = ['id', 'id2', 'id3'];

        $backendMock = $this->createMock(\Magento\Framework\Cache\Test\Unit\CoreTestMock::class);
        $backendMock->expects($this->once())
            ->method('getIdsNotMatchingTags')
            ->with($prefixedTags)
            ->will($this->returnValue($ids));
        $backendMock->expects($this->any())
            ->method('getCapabilities')
            ->will($this->returnValue(['tags' => true]));
        $frontend = new \Magento\Framework\Cache\Core([
            'caching'         => true,
            'cache_id_prefix' => $prefix,
        ]);
        $frontend->setBackend($backendMock);

        $result = $frontend->getIdsNotMatchingTags($tags);
        $this->assertEquals($ids, $result);
    }
}
