initial import

best-practices/project-structure/dependency-sample/cmd/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"net/http"
+
+	"golang.source-fellows.com/samples/applicationx/http/rest"
+	"golang.source-fellows.com/samples/applicationx/postgres"
+)
+
+func main() {
+
+	us := &postgres.UserService{}
+
+	http.HandleFunc("/", rest.Handler(us))
+	http.ListenAndServe(":8080", nil)
+
+}

best-practices/project-structure/dependency-sample/go.mod

@@ -0,0 +1,8 @@
+module golang.source-fellows.com/samples/applicationx
+
+go 1.14
+
+require (
+	github.com/golang/mock v1.4.4
+	rsc.io/quote/v3 v3.1.0 // indirect
+)

best-practices/project-structure/dependency-sample/go.sum

@@ -0,0 +1,14 @@
+github.com/golang/mock v1.4.3 h1:GV+pQPG/EUUbkh47niozDcADz6go/dUwhVzdUQHIVRw=
+github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
+github.com/golang/mock v1.4.4 h1:l75CXGRSwbaYNpl/Z2X1XIIAMSCquvXgpVZDhwEIJsc=
+github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20190425150028-36563e24a262 h1:qsl9y/CJx34tuA7QCPNp86JNJe4spst6Ff8MjvPUdPg=
+golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

best-practices/project-structure/dependency-sample/http/rest/handler.go

@@ -0,0 +1,16 @@
+package rest
+
+import (
+	"fmt"
+	"net/http"
+	"time"
+
+	"golang.source-fellows.com/samples/applicationx"
+)
+
+func Handler(us applicationx.UserService) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		us.CreateUser(&applicationx.User{})
+		fmt.Fprintf(w, "Hello World! %s", time.Now())
+	}
+}

best-practices/project-structure/dependency-sample/http/rest/handler_test.go

@@ -0,0 +1,29 @@
+package rest
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	"golang.source-fellows.com/samples/applicationx/mocks"
+)
+
+func TestHandler(t *testing.T) {
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	userService := mocks.NewMockUserService(ctrl)
+
+	handlerFunc := Handler(userService)
+
+	w := httptest.NewRecorder()
+	r, _ := http.NewRequest("GET", "/egal", nil)
+
+	//wird der Service überhaupt aufgerufen?
+	userService.EXPECT().CreateUser(gomock.Any()).MinTimes(1)
+
+	handlerFunc(w, r)
+
+}

best-practices/project-structure/dependency-sample/mocks/user_service.go

@@ -0,0 +1,77 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: user.go
+
+// Package mocks is a generated GoMock package.
+package mocks
+
+import (
+	gomock "github.com/golang/mock/gomock"
+	applicationx "golang.source-fellows.com/samples/applicationx"
+	reflect "reflect"
+)
+
+// MockUserService is a mock of UserService interface
+type MockUserService struct {
+	ctrl     *gomock.Controller
+	recorder *MockUserServiceMockRecorder
+}
+
+// MockUserServiceMockRecorder is the mock recorder for MockUserService
+type MockUserServiceMockRecorder struct {
+	mock *MockUserService
+}
+
+// NewMockUserService creates a new mock instance
+func NewMockUserService(ctrl *gomock.Controller) *MockUserService {
+	mock := &MockUserService{ctrl: ctrl}
+	mock.recorder = &MockUserServiceMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (m *MockUserService) EXPECT() *MockUserServiceMockRecorder {
+	return m.recorder
+}
+
+// CreateUser mocks base method
+func (m *MockUserService) CreateUser(u *applicationx.User) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "CreateUser", u)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// CreateUser indicates an expected call of CreateUser
+func (mr *MockUserServiceMockRecorder) CreateUser(u interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "CreateUser", reflect.TypeOf((*MockUserService)(nil).CreateUser), u)
+}
+
+// ReadUser mocks base method
+func (m *MockUserService) ReadUser(id int) (*applicationx.User, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "ReadUser", id)
+	ret0, _ := ret[0].(*applicationx.User)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// ReadUser indicates an expected call of ReadUser
+func (mr *MockUserServiceMockRecorder) ReadUser(id interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReadUser", reflect.TypeOf((*MockUserService)(nil).ReadUser), id)
+}
+
+// DeleteUser mocks base method
+func (m *MockUserService) DeleteUser(id int) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "DeleteUser", id)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// DeleteUser indicates an expected call of DeleteUser
+func (mr *MockUserServiceMockRecorder) DeleteUser(id interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DeleteUser", reflect.TypeOf((*MockUserService)(nil).DeleteUser), id)
+}

best-practices/project-structure/dependency-sample/postgres/user_service.go

@@ -0,0 +1,24 @@
+package postgres
+
+import (
+	"fmt"
+
+	"golang.source-fellows.com/samples/applicationx"
+)
+
+var _ applicationx.UserService = &UserService{}
+
+type UserService struct{}
+
+func (us *UserService) CreateUser(user *applicationx.User) error {
+	fmt.Println("Create User in Postgres Service")
+	return nil
+}
+
+func (us *UserService) DeleteUser(id int) error {
+	return nil
+}
+
+func (us *UserService) ReadUser(id int) (*applicationx.User, error) {
+	return nil, nil
+}

best-practices/project-structure/dependency-sample/user.go

@@ -0,0 +1,14 @@
+//go:generate mockgen -source=user.go -package mocks -destination mocks/user_service.go
+
+package applicationx
+
+type User struct {
+	ID   int
+	name string
+}
+
+type UserService interface {
+	CreateUser(u *User) error
+	ReadUser(id int) (*User, error)
+	DeleteUser(id int) error
+}