Исправил лайаут. Починил интеграционные тесты. Еще что-то сделал...

Makefile

@@ -1,11 +1,11 @@
 build:
-	go build -o bin ./previewer/main.go
+	go build -o bin ./cmd/main.go
 
 test:
-	go test -race ./previewer/...
+	go test -race ./cmd/... ./internal/...
 
 lint: install-lint-deps
-	golangci-lint run ./previewer/...
+	golangci-lint run ./previewer/... ./internal/...
 
 install-lint-deps:
 	rm -rf $(shell go env GOPATH)/bin/golangci-lint

cmd/main.go

@@ -6,8 +6,8 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/tiburon-777/OTUS_Project/previewer/application"
-	"github.com/tiburon-777/OTUS_Project/previewer/config"
+	"github.com/tiburon-777/OTUS_Project/internal/application"
+	"github.com/tiburon-777/OTUS_Project/internal/config"
 )
 
 var ConfigFile = flag.String("config", "/etc/previewer.conf", "Path to configuration file")

cmd/main_test.go

@@ -6,15 +6,24 @@ import (
 	"io/ioutil"
 	"log"
 	"net/http"
+	"strconv"
 	"sync"
 	"testing"
 	"time"
 )
 
+const testPortBase = 3000
+
 func TestIntegrationPositive(t *testing.T) {
+	testPort := strconv.Itoa(testPortBase + 1)
 	wg := sync.WaitGroup{}
-	server := &http.Server{Addr: ":3000", Handler: http.FileServer(http.Dir("../examples"))}
-	go server.ListenAndServe()
+	server := &http.Server{Addr: "localhost:" + testPort, Handler: http.FileServer(http.Dir("../assets"))}
+	go func() {
+		err := server.ListenAndServe()
+		if err != nil {
+			log.Println(err.Error())
+		}
+	}()
 	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
 	go func(ctx context.Context) {
 		main()
@@ -24,10 +33,10 @@ func TestIntegrationPositive(t *testing.T) {
 	wg.Add(2)
 	t.Run("remote server return jpeg", func(t *testing.T) {
 		defer wg.Done()
-		body, _, err := request("http://localhost:8080/fill/1024/504/localhost:3000/gopher_original_1024x504.jpg", 15*time.Second)
+		body, resp, err := request("http://localhost:8080/fill/1024/504/localhost:"+testPort+"/gopher_original_1024x504.jpg", 15*time.Second)
 		require.NoError(t, err)
 		require.NotNil(t, body)
-		//require.Equal(t, 200, resp.StatusCode)
+		require.Equal(t, 200, resp.StatusCode)
 	})
 	t.Run("found pic in cache", func(t *testing.T) {
 		defer wg.Done()
@@ -42,10 +51,15 @@ func TestIntegrationPositive(t *testing.T) {
 }
 
 func TestIntegrationNegative(t *testing.T) {
-	// Развернуть веб сервис со статическими картинками
+	testPort := strconv.Itoa(testPortBase + 2)
 	wg := sync.WaitGroup{}
-	server := &http.Server{Addr: ":3000", Handler: http.FileServer(http.Dir("../examples"))}
-	go server.ListenAndServe()
+	server := &http.Server{Addr: "localhost:" + testPort, Handler: http.FileServer(http.Dir("../assets"))}
+	go func() {
+		err := server.ListenAndServe()
+		if err != nil {
+			log.Println(err.Error())
+		}
+	}()
 	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
 	// Запустить наше приложение
 	go func(ctx context.Context) {

internal/application/application.go

@@ -5,9 +5,9 @@ import (
 	"net"
 	"net/http"
 
-	"github.com/tiburon-777/OTUS_Project/previewer/cache"
-	"github.com/tiburon-777/OTUS_Project/previewer/config"
-	"github.com/tiburon-777/OTUS_Project/previewer/logger"
+	"github.com/tiburon-777/OTUS_Project/internal/cache"
+	"github.com/tiburon-777/OTUS_Project/internal/config"
+	"github.com/tiburon-777/OTUS_Project/internal/logger"
 )
 
 type App struct {

internal/application/handlers.go

@@ -5,10 +5,10 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/tiburon-777/OTUS_Project/previewer/cache"
-	"github.com/tiburon-777/OTUS_Project/previewer/config"
-	"github.com/tiburon-777/OTUS_Project/previewer/converter"
-	"github.com/tiburon-777/OTUS_Project/previewer/logger"
+	"github.com/tiburon-777/OTUS_Project/internal/cache"
+	"github.com/tiburon-777/OTUS_Project/internal/config"
+	"github.com/tiburon-777/OTUS_Project/internal/converter"
+	"github.com/tiburon-777/OTUS_Project/internal/logger"
 )
 
 func handler(c cache.Cache, conf config.Config) http.Handler {

internal/application/query.go

@@ -46,7 +46,7 @@ func (q Query) fromOrigin(timeout time.Duration) ([]byte, *http.Response, error)
 	client := &http.Client{}
 	ctx, cancel := context.WithTimeout(context.Background(), timeout)
 	defer cancel()
-	req, err := http.NewRequestWithContext(ctx, "GET", "http://"+q.URL.Host+"/"+q.URL.Path, nil)
+	req, err := http.NewRequestWithContext(ctx, "GET", "http://"+q.URL.Host+q.URL.Path, nil)
 	if err != nil {
 		return nil, nil, err
 	}