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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yiiunit\framework\di;
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use Yii;
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use yii\base\Component;
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use yii\db\Connection;
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use yii\di\Container;
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use yii\di\Instance;
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use yiiunit\TestCase;
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/**
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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* @group di
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*/
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class InstanceTest extends TestCase
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{
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protected function tearDown()
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{
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parent::tearDown();
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Yii::$container = new Container();
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}
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public function testOf()
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{
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$container = new Container();
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$className = Component::className();
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$instance = Instance::of($className);
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$this->assertInstanceOf('\\yii\\di\\Instance', $instance);
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$this->assertInstanceOf(Component::className(), $instance->get($container));
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$this->assertInstanceOf(Component::className(), Instance::ensure($instance, $className, $container));
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$this->assertNotSame($instance->get($container), Instance::ensure($instance, $className, $container));
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}
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public function testEnsure()
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{
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$container = new Container();
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$container->set('db', [
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'class' => 'yii\db\Connection',
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'dsn' => 'test',
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]);
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$this->assertInstanceOf(Connection::className(), Instance::ensure('db', 'yii\db\Connection', $container));
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$this->assertInstanceOf(Connection::className(), Instance::ensure(new Connection, 'yii\db\Connection', $container));
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$this->assertInstanceOf('\\yii\\db\\Connection', Instance::ensure(['class' => 'yii\db\Connection', 'dsn' => 'test'], 'yii\db\Connection', $container));
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}
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/**
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* ensure an InvalidConfigException is thrown when a component does not exist.
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*/
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public function testEnsure_NonExistingComponentException()
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{
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$container = new Container();
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$this->expectException('yii\base\InvalidConfigException');
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$this->expectExceptionMessageRegExp('/^Failed to instantiate component or class/i');
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Instance::ensure('cache', 'yii\cache\Cache', $container);
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}
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/**
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* ensure an InvalidConfigException is thrown when a class does not exist.
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*/
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public function testEnsure_NonExistingClassException()
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{
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$container = new Container();
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$this->expectException('yii\base\InvalidConfigException');
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$this->expectExceptionMessageRegExp('/^Failed to instantiate component or class/i');
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Instance::ensure('yii\cache\DoesNotExist', 'yii\cache\Cache', $container);
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}
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public function testEnsure_WithoutType()
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{
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$container = new Container();
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$container->set('db', [
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'class' => 'yii\db\Connection',
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'dsn' => 'test',
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]);
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$this->assertInstanceOf(Connection::className(), Instance::ensure('db', null, $container));
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$this->assertInstanceOf(Connection::className(), Instance::ensure(new Connection, null, $container));
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$this->assertInstanceOf('\\yii\\db\\Connection', Instance::ensure(['class' => 'yii\db\Connection', 'dsn' => 'test'], null, $container));
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}
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public function testEnsure_MinimalSettings()
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{
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Yii::$container->set('db', [
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'class' => 'yii\db\Connection',
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'dsn' => 'test',
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]);
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$this->assertInstanceOf(Connection::className(), Instance::ensure('db'));
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$this->assertInstanceOf(Connection::className(), Instance::ensure(new Connection));
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$this->assertInstanceOf(Connection::className(), Instance::ensure(['class' => 'yii\db\Connection', 'dsn' => 'test']));
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Yii::$container = new Container;
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}
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public function testExceptionRefersTo()
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{
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$container = new Container;
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$container->set('db', [
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'class' => 'yii\db\Connection',
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'dsn' => 'test',
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]);
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$this->expectException('yii\base\InvalidConfigException');
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$this->expectExceptionMessage('"db" refers to a yii\db\Connection component. yii\base\Widget is expected.');
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Instance::ensure('db', 'yii\base\Widget', $container);
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}
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public function testExceptionInvalidDataType()
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{
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$this->expectException('yii\base\InvalidConfigException');
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$this->expectExceptionMessage('Invalid data type: yii\db\Connection. yii\base\Widget is expected.');
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Instance::ensure(new Connection, 'yii\base\Widget');
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}
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public function testExceptionComponentIsNotSpecified()
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{
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$this->expectException('yii\base\InvalidConfigException');
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$this->expectExceptionMessage('The required component is not specified.');
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Instance::ensure('');
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}
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public function testGet()
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{
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$this->mockApplication([
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'components' => [
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'db' => [
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'class' => 'yii\db\Connection',
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'dsn' => 'test',
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]
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]
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]);
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$container = Instance::of('db');
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$this->assertInstanceOf(Connection::className(), $container->get());
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$this->destroyApplication();
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}
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/**
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* This tests the usage example given in yii\di\Instance class PHPdoc
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*/
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public function testLazyInitializationExample()
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{
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Yii::$container = new Container;
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Yii::$container->set('cache', [
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'class' => 'yii\caching\DbCache',
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'db' => Instance::of('db')
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]);
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Yii::$container->set('db', [
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'class' => 'yii\db\Connection',
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'dsn' => 'sqlite:path/to/file.db',
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]);
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$this->assertInstanceOf('yii\caching\DbCache', $cache = Yii::$container->get('cache'));
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$this->assertInstanceOf('yii\db\Connection', $db = $cache->db);
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$this->assertEquals('sqlite:path/to/file.db', $db->dsn);
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}
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public function testRestoreAfterVarExport()
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{
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$instance = Instance::of('something');
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$export = var_export($instance, true);
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$this->assertRegExp(<<<'PHP'
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@yii\\di\\Instance::__set_state\(array\(
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\s+'id' => 'something',
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\)\)@
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PHP
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, $export);
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$this->assertEquals($instance, Instance::__set_state([
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'id' => 'something',
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]));
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}
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public function testRestoreAfterVarExportRequiresId()
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{
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$this->expectException('yii\base\InvalidConfigException');
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$this->expectExceptionMessage('Failed to instantiate class "Instance". Required parameter "id" is missing');
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Instance::__set_state([]);
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}
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public function testExceptionInvalidDataTypeInArray()
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{
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$this->setExpectedException('yii\base\InvalidConfigException', 'Invalid data type: yii\db\Connection. yii\base\Widget is expected.');
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Instance::ensure([
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'class' => Connection::className(),
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], 'yii\base\Widget');
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}
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}
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