added chaining example (c8a4daea) · Commits · bsmrgo / playground

chaining/chaining.go

0 → 100644

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Original line number	Diff line number	Diff line
		package chaining

		const (
		defaultAddr = "127.0.0.1"
		defaultPort = 2000
		)

		type Service struct {
		addr string
		addrChanged bool
		port int
		portChanged bool
		}

		func New() *Service {
		return &Service{
		addr: defaultAddr,
		port: defaultPort,
		}
		}

		func (s Service) Addr(addr string) Service {
		s.addr = addr
		s.addrChanged = true
		return s
		}

		func (s Service) Port(port int) Service {
		s.port = port
		s.portChanged = true
		return s
		}

		func (s *Service) Run() error {
		return nil
		}

		func (s *Service) IsAddrChanged() bool {
		return s.addrChanged
		}

		func (s *Service) IsPortChanged() bool {
		return s.portChanged
		}

0 → 100644

+18 −0

Original line number	Diff line number	Diff line
		package chaining

		import "testing"

		func TestService(t *testing.T) {
		addr := "0.0.0.0"
		port := 3000
		svc := New().Addr(addr).Port(port)
		if err := svc.Run(); err != nil {
		t.Fatalf("svc.Run() failed with: %s", err)
		}
		if !svc.IsAddrChanged() {
		t.Errorf("service addr did not chang")
		}
		if !svc.IsPortChanged() {
		t.Errorf("service port did not change")
		}
		}