if got := c.instance.Validate(); (got == nil) != c.valid {
				t.Fatalf("%s failed: got valid=%v but wanted valid=%v: %v", c.name, got == nil, c.valid, got)
			}
		})
	}
}

func TestServiceValidate(t *testing.T) {
	ports := PortList{
		{Name: "http", Port: 80, Protocol: protocol.HTTP},
		{Name: "http-alt", Port: 8080, Protocol: protocol.HTTP},
	}
	badPorts := PortList{