/** @test */
function it_is_dead_if_no_units_are_alive()
{
$unit1 = $this->getMock(Army\Unit\Unit::class);
$unit2 = $this->getMock(Army\Unit\Unit::class);
$unit1->method('isDead')->willReturn(true);
$unit2->method('isDead')->willReturn(true);
$this->army->add($unit1);
$this->army->add($unit2);
$this->assertTrue($this->army->isDead());
}