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// Copyright 2014 Manu Martinez-Almeida. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package gin
import (
"bytes"
"errors"
"fmt"
"html/template"
"io"
"log"
"os"
"runtime"
"sync"
"testing"
"github.com/stretchr/testify/assert"
)
// TODO
// func debugRoute(httpMethod, absolutePath string, handlers HandlersChain) {
// func debugPrint(format string, values ...interface{}) {
func TestIsDebugging(t *testing.T) {
SetMode(DebugMode)
assert.True(t, IsDebugging())
SetMode(ReleaseMode)
assert.False(t, IsDebugging())
SetMode(TestMode)
assert.False(t, IsDebugging())
}
func TestDebugPrint(t *testing.T) {
re := captureOutput(t, func() {
SetMode(DebugMode)
SetMode(ReleaseMode)
debugPrint("DEBUG this!")
SetMode(TestMode)
debugPrint("DEBUG this!")
SetMode(DebugMode)
debugPrint("these are %d %s", 2, "error messages")
SetMode(TestMode)
})
assert.Equal(t, "[GIN-debug] these are 2 error messages\n", re)
}
func TestDebugPrintError(t *testing.T) {
re := captureOutput(t, 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) {
re := captureOutput(t, 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 TestDebugPrintRouteFunc(t *testing.T) {
DebugPrintRouteFunc = func(httpMethod, absolutePath, handlerName string, nuHandlers int) {
fmt.Fprintf(DefaultWriter, "[GIN-debug] %-6s %-40s --> %s (%d handlers)\n", httpMethod, absolutePath, handlerName, nuHandlers)
}
re := captureOutput(t, func() {
SetMode(DebugMode)
debugPrintRoute("GET", "/path/to/route/:param1/:param2", HandlersChain{func(c *Context) {}, handlerNameTest})
SetMode(TestMode)
})
assert.Regexp(t, `^\[GIN-debug\] GET /path/to/route/:param1/:param2 --> (.*/vendor/)?github.com/gin-gonic/gin.handlerNameTest \(2 handlers\)\n$`, re)
}
func TestDebugPrintLoadTemplate(t *testing.T) {
re := captureOutput(t, 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) {
re := captureOutput(t, 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) {
re := captureOutput(t, func() {
SetMode(DebugMode)
debugPrintWARNINGDefault()
SetMode(TestMode)
})
m, e := getMinVer(runtime.Version())
if e == nil && m <= ginSupportMinGoVer {
assert.Equal(t, "[GIN-debug] [WARNING] Now Gin requires Go 1.14+.\n\n[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", re)
} else {
assert.Equal(t, "[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", re)
}
}
func TestDebugPrintWARNINGNew(t *testing.T) {
re := captureOutput(t, 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 captureOutput(t *testing.T, f func()) string {
reader, writer, err := os.Pipe()
if err != nil {
panic(err)
}
defaultWriter := DefaultWriter
defaultErrorWriter := DefaultErrorWriter
defer func() {
DefaultWriter = defaultWriter
DefaultErrorWriter = defaultErrorWriter
log.SetOutput(os.Stderr)
}()
DefaultWriter = writer
DefaultErrorWriter = writer
log.SetOutput(writer)
out := make(chan string)
wg := new(sync.WaitGroup)
wg.Add(1)
go func() {
var buf bytes.Buffer
wg.Done()
_, err := io.Copy(&buf, reader)
assert.NoError(t, err)
out <- buf.String()
}()
wg.Wait()
f()
writer.Close()
return <-out
}
func TestGetMinVer(t *testing.T) {
var m uint64
var e error
_, e = getMinVer("go1")
assert.NotNil(t, e)
m, e = getMinVer("go1.1")
assert.Equal(t, uint64(1), m)
assert.Nil(t, e)
m, e = getMinVer("go1.1.1")
assert.Nil(t, e)
assert.Equal(t, uint64(1), m)
_, e = getMinVer("go1.1.1.1")
assert.NotNil(t, e)
}
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