Небольшой рефаткоринг

Удалил мусор
Добавил моки
Добавил тест

conf.go

@@ -4,11 +4,11 @@ import (
 	"time"
 )
 
-type Configuration struct {
-	Stdout struct {
+type ConfigurationStdout struct {
 	Level string `yaml:"level"`
-	} `yaml:"console"`
-	File struct {
+}
+
+type ConfigurationFile struct {
 	Enabled    bool   `yaml:"enabled"`
 	Level      string `yaml:"level"`
 	Filename   string `yaml:"filename"`
@@ -17,10 +17,16 @@ type Configuration struct {
 	MaxBackups int    `yaml:"maxbackups"`
 	LocalTime  bool   `yaml:"localtime"`
 	Compress   bool   `yaml:"compress"`
-	}
-	Sentry struct {
+}
+
+type ConfigurationSentry struct {
 	Level   string        `yaml:"level"`
 	DSN     string        `yaml:"dsn"`
 	Timeout time.Duration `yaml:"timeout"`
-	} `yaml:"sentry"`
+}
+
+type Configuration struct {
+	Stdout ConfigurationStdout `yaml:"console"`
+	File   ConfigurationFile   `yaml:"file"`
+	Sentry ConfigurationSentry `yaml:"sentry"`
 }

data/test.log

@@ -0,0 +1,4 @@
+{"level":"debug","ts":"1974-05-19T01:02:03.000000004Z","msg":"Debug message"}
+{"level":"info","ts":"1974-05-19T01:02:03.000000004Z","msg":"info message"}
+{"level":"warn","ts":"1974-05-19T01:02:03.000000004Z","msg":"Warn message"}
+{"level":"error","ts":"1974-05-19T01:02:03.000000004Z","msg":"Error message"}

go.mod

@@ -8,6 +8,7 @@ require (
 )
 
 require (
+	bou.ke/monkey v1.0.2 // indirect
 	github.com/certifi/gocertifi v0.0.0-20210507211836-431795d63e8d // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/getsentry/raven-go v0.2.0 // indirect

go.sum

@@ -1,3 +1,5 @@
+bou.ke/monkey v1.0.2 h1:kWcnsrCNUatbxncxR/ThdYqbytgOIArtYWqcQLQzKLI=
+bou.ke/monkey v1.0.2/go.mod h1:OqickVX3tNx6t33n1xvtTtu85YN5s6cKwVug+oHMaIA=
 github.com/certifi/gocertifi v0.0.0-20210507211836-431795d63e8d h1:S2NE3iHSwP0XV47EEXL8mWmRdEfGscSJ+7EgePNgt0s=
 github.com/certifi/gocertifi v0.0.0-20210507211836-431795d63e8d/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=

logger.go

@@ -17,7 +17,7 @@ import (
 	"gopkg.in/natefinch/lumberjack.v2"
 )
 
-var zapLogger *zap.Logger
+var zapLogger = zap.New(nil)
 
 func Named(name string) *zap.Logger {
 	return zapLogger.Named(name)
@@ -89,8 +89,6 @@ func Init(conf *Configuration) {
 			},
 		)
 		cores = append(cores, zapcore.NewCore(zapcore.NewJSONEncoder(cfg), writer, fileLevelEnabler))
-
-		redirectStderrToFile(conf)
 	}
 
 	// sentry

logger_test.go

@@ -0,0 +1,41 @@
+package gol
+
+import (
+	"bou.ke/monkey"
+	"github.com/stretchr/testify/assert"
+	"os"
+	"testing"
+	"time"
+)
+
+func TestLog(t *testing.T) {
+	now := time.Date(1974, time.May, 19, 1, 2, 3, 4, time.UTC)
+	patch := monkey.Patch(time.Now, func() time.Time { return now })
+	defer patch.Unpatch()
+
+	t.Run("TestNilLog", func(t *testing.T) {
+		Info("info message")
+		//assert.Equal(t, test.expectedFileName, buildErrorsFilename(test.logFileName), "result")
+	})
+
+	t.Run("TestFileLog", func(t *testing.T) {
+		configPath := "test.log"
+		Init(&Configuration{
+			File: ConfigurationFile{
+				Enabled:  true,
+				Level:    "debug",
+				Filename: configPath,
+			},
+		})
+
+		Debug("Debug message")
+		Info("info message")
+		Warn("Warn message")
+		Error("Error message")
+
+		expectedFile, _ := os.ReadFile("data/test.log")
+		actualFile, _ := os.ReadFile("test.log")
+		assert.Equal(t, string(expectedFile), string(actualFile), "result")
+		os.Remove(configPath)
+	})
+}

stderrtofile.go

@@ -1,20 +0,0 @@
-//go:build !windows
-
-package gol
-
-import (
-	"log"
-	"os"
-	"syscall"
-)
-
-func redirectStderrToFile(conf *Configuration) {
-	fileName := buildErrorsFilename(conf.File.Filename)
-	f, err := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
-	if err != nil {
-		log.Fatalf("open %s: %s", fileName, err)
-	}
-	if err = syscall.Dup2(int(f.Fd()), int(os.Stderr.Fd())); err != nil {
-		log.Fatalf("Failed to redirect stderr to file: %s", err)
-	}
-}

stderrtofile_windows.go

@@ -1,6 +0,0 @@
-//go:build windows
-
-package gol
-
-func redirectStderrToFile(conf *Configuration) {
-}