From 07f1bf0e63512fbf9c7d7984d235a399eb916244 Mon Sep 17 00:00:00 2001 From: Bo-Yi Wu Date: Wed, 19 Sep 2018 13:57:00 +0800 Subject: [PATCH] feat: replace debug log with fmt package. (#1560) --- context_test.go | 12 ++--- debug.go | 8 +-- debug_test.go | 140 +++++++++++++++++++++++++++--------------------- 3 files changed, 86 insertions(+), 74 deletions(-) diff --git a/context_test.go b/context_test.go index 4c30708..5a5bb6e 100644 --- a/context_test.go +++ b/context_test.go @@ -784,14 +784,14 @@ func TestContextRenderHTML2(t *testing.T) { router.addRoute("GET", "/", HandlersChain{func(_ *Context) {}}) assert.Len(t, router.trees, 1) - var b bytes.Buffer - setup(&b) - defer teardown() - templ := template.Must(template.New("t").Parse(`Hello {{.name}}`)) - router.SetHTMLTemplate(templ) + re := captureOutput(func() { + SetMode(DebugMode) + router.SetHTMLTemplate(templ) + SetMode(TestMode) + }) - assert.Equal(t, "[GIN-debug] [WARNING] Since SetHTMLTemplate() is NOT thread-safe. It should only be called\nat initialization. ie. before any route is registered or the router is listening in a socket:\n\n\trouter := gin.Default()\n\trouter.SetHTMLTemplate(template) // << good place\n\n", b.String()) + assert.Equal(t, "[GIN-debug] [WARNING] Since SetHTMLTemplate() is NOT thread-safe. It should only be called\nat initialization. ie. before any route is registered or the router is listening in a socket:\n\n\trouter := gin.Default()\n\trouter.SetHTMLTemplate(template) // << good place\n\n", re) c.HTML(http.StatusCreated, "t", H{"name": "alexandernyquist"}) diff --git a/debug.go b/debug.go index 693486a..d6d8bce 100644 --- a/debug.go +++ b/debug.go @@ -6,14 +6,10 @@ package gin import ( "bytes" + "fmt" "html/template" - "log" ) -func init() { - log.SetFlags(0) -} - // IsDebugging returns true if the framework is running in debug mode. // Use SetMode(gin.ReleaseMode) to disable debug mode. func IsDebugging() bool { @@ -48,7 +44,7 @@ func debugPrintLoadTemplate(tmpl *template.Template) { func debugPrint(format string, values ...interface{}) { if IsDebugging() { - log.Printf("[GIN-debug] "+format, values...) + fmt.Printf("[GIN-debug] "+format, values...) } } diff --git a/debug_test.go b/debug_test.go index ed5a6a5..0b9d791 100644 --- a/debug_test.go +++ b/debug_test.go @@ -11,6 +11,7 @@ import ( "io" "log" "os" + "sync" "testing" "github.com/stretchr/testify/assert" @@ -30,86 +31,101 @@ func TestIsDebugging(t *testing.T) { } func TestDebugPrint(t *testing.T) { - var w bytes.Buffer - setup(&w) - defer teardown() - - SetMode(ReleaseMode) - debugPrint("DEBUG this!") - SetMode(TestMode) - debugPrint("DEBUG this!") - assert.Empty(t, w.String()) - - SetMode(DebugMode) - debugPrint("these are %d %s\n", 2, "error messages") - assert.Equal(t, "[GIN-debug] these are 2 error messages\n", w.String()) + re := captureOutput(func() { + SetMode(DebugMode) + SetMode(ReleaseMode) + debugPrint("DEBUG this!") + SetMode(TestMode) + debugPrint("DEBUG this!") + SetMode(DebugMode) + debugPrint("these are %d %s\n", 2, "error messages") + SetMode(TestMode) + }) + assert.Equal(t, "[GIN-debug] these are 2 error messages\n", re) } func TestDebugPrintError(t *testing.T) { - var w bytes.Buffer - setup(&w) - defer teardown() - - SetMode(DebugMode) - debugPrintError(nil) - assert.Empty(t, w.String()) - - debugPrintError(errors.New("this is an error")) - assert.Equal(t, "[GIN-debug] [ERROR] this is an error\n", w.String()) + re := captureOutput(func() { + SetMode(DebugMode) + debugPrintError(nil) + debugPrintError(errors.New("this is an error")) + SetMode(TestMode) + }) + assert.Equal(t, "[GIN-debug] [ERROR] this is an error\n", re) } func TestDebugPrintRoutes(t *testing.T) { - var w bytes.Buffer - setup(&w) - defer teardown() - - debugPrintRoute("GET", "/path/to/route/:param", HandlersChain{func(c *Context) {}, handlerNameTest}) - assert.Regexp(t, `^\[GIN-debug\] GET /path/to/route/:param --> (.*/vendor/)?github.com/gin-gonic/gin.handlerNameTest \(2 handlers\)\n$`, w.String()) + re := captureOutput(func() { + SetMode(DebugMode) + debugPrintRoute("GET", "/path/to/route/:param", HandlersChain{func(c *Context) {}, handlerNameTest}) + SetMode(TestMode) + }) + assert.Regexp(t, `^\[GIN-debug\] GET /path/to/route/:param --> (.*/vendor/)?github.com/gin-gonic/gin.handlerNameTest \(2 handlers\)\n$`, re) } func TestDebugPrintLoadTemplate(t *testing.T) { - var w bytes.Buffer - setup(&w) - defer teardown() - - templ := template.Must(template.New("").Delims("{[{", "}]}").ParseGlob("./testdata/template/hello.tmpl")) - debugPrintLoadTemplate(templ) - assert.Regexp(t, `^\[GIN-debug\] Loaded HTML Templates \(2\): \n(\t- \n|\t- hello\.tmpl\n){2}\n`, w.String()) + re := captureOutput(func() { + SetMode(DebugMode) + templ := template.Must(template.New("").Delims("{[{", "}]}").ParseGlob("./testdata/template/hello.tmpl")) + debugPrintLoadTemplate(templ) + SetMode(TestMode) + }) + assert.Regexp(t, `^\[GIN-debug\] Loaded HTML Templates \(2\): \n(\t- \n|\t- hello\.tmpl\n){2}\n`, re) } func TestDebugPrintWARNINGSetHTMLTemplate(t *testing.T) { - var w bytes.Buffer - setup(&w) - defer teardown() - - debugPrintWARNINGSetHTMLTemplate() - assert.Equal(t, "[GIN-debug] [WARNING] Since SetHTMLTemplate() is NOT thread-safe. It should only be called\nat initialization. ie. before any route is registered or the router is listening in a socket:\n\n\trouter := gin.Default()\n\trouter.SetHTMLTemplate(template) // << good place\n\n", w.String()) + re := captureOutput(func() { + SetMode(DebugMode) + debugPrintWARNINGSetHTMLTemplate() + SetMode(TestMode) + }) + assert.Equal(t, "[GIN-debug] [WARNING] Since SetHTMLTemplate() is NOT thread-safe. It should only be called\nat initialization. ie. before any route is registered or the router is listening in a socket:\n\n\trouter := gin.Default()\n\trouter.SetHTMLTemplate(template) // << good place\n\n", re) } func TestDebugPrintWARNINGDefault(t *testing.T) { - var w bytes.Buffer - setup(&w) - defer teardown() - - debugPrintWARNINGDefault() - assert.Equal(t, "[GIN-debug] [WARNING] Now Gin requires Go 1.6 or later and Go 1.7 will be required soon.\n\n[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", w.String()) + re := captureOutput(func() { + SetMode(DebugMode) + debugPrintWARNINGDefault() + SetMode(TestMode) + }) + assert.Equal(t, "[GIN-debug] [WARNING] Now Gin requires Go 1.6 or later and Go 1.7 will be required soon.\n\n[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", re) } func TestDebugPrintWARNINGNew(t *testing.T) { - var w bytes.Buffer - setup(&w) - defer teardown() - - debugPrintWARNINGNew() - assert.Equal(t, "[GIN-debug] [WARNING] Running in \"debug\" mode. Switch to \"release\" mode in production.\n - using env:\texport GIN_MODE=release\n - using code:\tgin.SetMode(gin.ReleaseMode)\n\n", w.String()) + re := captureOutput(func() { + SetMode(DebugMode) + debugPrintWARNINGNew() + SetMode(TestMode) + }) + assert.Equal(t, "[GIN-debug] [WARNING] Running in \"debug\" mode. Switch to \"release\" mode in production.\n - using env:\texport GIN_MODE=release\n - using code:\tgin.SetMode(gin.ReleaseMode)\n\n", re) } -func setup(w io.Writer) { - SetMode(DebugMode) - log.SetOutput(w) -} - -func teardown() { - SetMode(TestMode) - log.SetOutput(os.Stdout) +func captureOutput(f func()) string { + reader, writer, err := os.Pipe() + if err != nil { + panic(err) + } + stdout := os.Stdout + stderr := os.Stderr + defer func() { + os.Stdout = stdout + os.Stderr = stderr + log.SetOutput(os.Stderr) + }() + os.Stdout = writer + os.Stderr = writer + log.SetOutput(writer) + out := make(chan string) + wg := new(sync.WaitGroup) + wg.Add(1) + go func() { + var buf bytes.Buffer + wg.Done() + io.Copy(&buf, reader) + out <- buf.String() + }() + wg.Wait() + f() + writer.Close() + return <-out }