public function testCount() { $this->assertCount(0, $this->collection); $this->collection->add(new Command(new CommandConfig('ls'))); $this->assertCount(1, $this->collection); $this->collection->add(new Command(new CommandConfig('cd'))); $this->assertCount(2, $this->collection); $this->collection->remove('ls'); $this->assertCount(1, $this->collection); $this->collection->clear(); $this->assertCount(0, $this->collection); }