/**
* @covers Symfony\Components\DependencyInjection\ContainerBuilder::setAlias
* @covers Symfony\Components\DependencyInjection\ContainerBuilder::hasAlias
* @covers Symfony\Components\DependencyInjection\ContainerBuilder::getAlias
*/
public function testAliases()
{
$builder = new ContainerBuilder();
$builder->register('foo', 'stdClass');
$builder->setAlias('bar', 'foo');
$this->assertTrue($builder->hasAlias('bar'), '->hasAlias() returns true if the alias exists');
$this->assertFalse($builder->hasAlias('foobar'), '->hasAlias() returns false if the alias does not exist');
$this->assertEquals('foo', $builder->getAlias('bar'), '->getAlias() returns the aliased service');
$this->assertTrue($builder->has('bar'), '->setAlias() defines a new service');
$this->assertTrue($builder->get('bar') === $builder->get('foo'), '->setAlias() creates a service that is an alias to another one');
try {
$builder->getAlias('foobar');
$this->fail('->getAlias() throws an InvalidArgumentException if the alias does not exist');
} catch (\Exception $e) {
$this->assertInstanceOf('\\InvalidArgumentException', $e, '->getAlias() throws an InvalidArgumentException if the alias does not exist');
$this->assertEquals('The service alias "foobar" does not exist.', $e->getMessage(), '->getAlias() throws an InvalidArgumentException if the alias does not exist');
}
}