learning/go-patterns/patterns/construction/construction_test.go

package construction

import (
	"fmt"
	"testing"
)

func TestNewServerUsesDefaults(t *testing.T) {
	server := NewServer()

	if got, want := server.Address(), "127.0.0.1:8080"; got != want {
		t.Fatalf("Address() = %q, want %q", got, want)
	}
	if got := server.Config(); got != (Config{Host: "127.0.0.1", Port: 8080}) {
		t.Fatalf("Config() = %#v, want defaults", got)
	}
}

func TestNewServerAppliesOptions(t *testing.T) {
	server := NewServer(
		WithHost("api.example.test"),
		WithPort(8443),
		WithSecure(true),
	)

	want := Config{Host: "api.example.test", Port: 8443, Secure: true}
	if got := server.Config(); got != want {
		t.Fatalf("Config() = %#v, want %#v", got, want)
	}
	if got, want := server.Address(), "api.example.test:8443"; got != want {
		t.Fatalf("Address() = %q, want %q", got, want)
	}
}

func ExampleNewServer() {
	server := NewServer(WithHost("example.test"), WithPort(443), WithSecure(true))
	fmt.Println(server.Address(), server.Config().Secure)
	// Output: example.test:443 true
}