public function testMultipleBackendProviders()
{
$service = new BackendService($this->config, $this->l10n);
$backend1a = $this->getBackendMock('\\Foo\\Bar');
$backend1b = $this->getBackendMock('\\Bar\\Foo');
$backend2 = $this->getBackendMock('\\Dead\\Beef');
$provider1Mock = $this->getMock('\\OCA\\Files_External\\Lib\\Config\\IBackendProvider');
$provider1Mock->expects($this->once())->method('getBackends')->willReturn([$backend1a, $backend1b]);
$service->registerBackendProvider($provider1Mock);
$provider2Mock = $this->getMock('\\OCA\\Files_External\\Lib\\Config\\IBackendProvider');
$provider2Mock->expects($this->once())->method('getBackends')->willReturn([$backend2]);
$service->registerBackendProvider($provider2Mock);
$this->assertEquals($backend1a, $service->getBackend('identifier:\\Foo\\Bar'));
$this->assertEquals($backend1b, $service->getBackend('identifier:\\Bar\\Foo'));
$this->assertEquals($backend2, $service->getBackend('identifier:\\Dead\\Beef'));
$this->assertCount(3, $service->getBackends());
}
