public function testNotAvailableThenAvailable()
{
$this->reader->expects($this->at(0))->method('load')->willReturn([]);
$this->reader->expects($this->at(1))->method('load')->willReturn(['a' => 1]);
$object = new DeploymentConfig($this->reader);
$this->assertFalse($object->isAvailable());
$this->assertTrue($object->isAvailable());
}