gin/recovery_test.go
Johnny Dallas 4cabdd303f
Add CustomRecovery builtin middleware (#2322)
* Add CustomRecovery and CustomRecoveryWithWriter methods

* add CustomRecovery example to README

* add test for CustomRecovery

* support RecoveryWithWriter(io.Writer, ...RecoveryFunc)
2020-07-09 09:40:00 +08:00

251 lines
6.9 KiB
Go

// 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"
"fmt"
"net"
"net/http"
"os"
"strings"
"syscall"
"testing"
"github.com/stretchr/testify/assert"
)
func TestPanicClean(t *testing.T) {
buffer := new(bytes.Buffer)
router := New()
password := "my-super-secret-password"
router.Use(RecoveryWithWriter(buffer))
router.GET("/recovery", func(c *Context) {
c.AbortWithStatus(http.StatusBadRequest)
panic("Oupps, Houston, we have a problem")
})
// RUN
w := performRequest(router, "GET", "/recovery",
header{
Key: "Host",
Value: "www.google.com",
},
header{
Key: "Authorization",
Value: fmt.Sprintf("Bearer %s", password),
},
header{
Key: "Content-Type",
Value: "application/json",
},
)
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
// Check the buffer does not have the secret key
assert.NotContains(t, buffer.String(), password)
}
// TestPanicInHandler assert that panic has been recovered.
func TestPanicInHandler(t *testing.T) {
buffer := new(bytes.Buffer)
router := New()
router.Use(RecoveryWithWriter(buffer))
router.GET("/recovery", func(_ *Context) {
panic("Oupps, Houston, we have a problem")
})
// RUN
w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusInternalServerError, w.Code)
assert.Contains(t, buffer.String(), "panic recovered")
assert.Contains(t, buffer.String(), "Oupps, Houston, we have a problem")
assert.Contains(t, buffer.String(), t.Name())
assert.NotContains(t, buffer.String(), "GET /recovery")
// Debug mode prints the request
SetMode(DebugMode)
// RUN
w = performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusInternalServerError, w.Code)
assert.Contains(t, buffer.String(), "GET /recovery")
SetMode(TestMode)
}
// TestPanicWithAbort assert that panic has been recovered even if context.Abort was used.
func TestPanicWithAbort(t *testing.T) {
router := New()
router.Use(RecoveryWithWriter(nil))
router.GET("/recovery", func(c *Context) {
c.AbortWithStatus(http.StatusBadRequest)
panic("Oupps, Houston, we have a problem")
})
// RUN
w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
}
func TestSource(t *testing.T) {
bs := source(nil, 0)
assert.Equal(t, []byte("???"), bs)
in := [][]byte{
[]byte("Hello world."),
[]byte("Hi, gin.."),
}
bs = source(in, 10)
assert.Equal(t, []byte("???"), bs)
bs = source(in, 1)
assert.Equal(t, []byte("Hello world."), bs)
}
func TestFunction(t *testing.T) {
bs := function(1)
assert.Equal(t, []byte("???"), bs)
}
// TestPanicWithBrokenPipe asserts that recovery specifically handles
// writing responses to broken pipes
func TestPanicWithBrokenPipe(t *testing.T) {
const expectCode = 204
expectMsgs := map[syscall.Errno]string{
syscall.EPIPE: "broken pipe",
syscall.ECONNRESET: "connection reset by peer",
}
for errno, expectMsg := range expectMsgs {
t.Run(expectMsg, func(t *testing.T) {
var buf bytes.Buffer
router := New()
router.Use(RecoveryWithWriter(&buf))
router.GET("/recovery", func(c *Context) {
// Start writing response
c.Header("X-Test", "Value")
c.Status(expectCode)
// Oops. Client connection closed
e := &net.OpError{Err: &os.SyscallError{Err: errno}}
panic(e)
})
// RUN
w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, expectCode, w.Code)
assert.Contains(t, strings.ToLower(buf.String()), expectMsg)
})
}
}
func TestCustomRecoveryWithWriter(t *testing.T) {
errBuffer := new(bytes.Buffer)
buffer := new(bytes.Buffer)
router := New()
handleRecovery := func(c *Context, err interface{}) {
errBuffer.WriteString(err.(string))
c.AbortWithStatus(http.StatusBadRequest)
}
router.Use(CustomRecoveryWithWriter(buffer, handleRecovery))
router.GET("/recovery", func(_ *Context) {
panic("Oupps, Houston, we have a problem")
})
// RUN
w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Contains(t, buffer.String(), "panic recovered")
assert.Contains(t, buffer.String(), "Oupps, Houston, we have a problem")
assert.Contains(t, buffer.String(), t.Name())
assert.NotContains(t, buffer.String(), "GET /recovery")
// Debug mode prints the request
SetMode(DebugMode)
// RUN
w = performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Contains(t, buffer.String(), "GET /recovery")
assert.Equal(t, strings.Repeat("Oupps, Houston, we have a problem", 2), errBuffer.String())
SetMode(TestMode)
}
func TestCustomRecovery(t *testing.T) {
errBuffer := new(bytes.Buffer)
buffer := new(bytes.Buffer)
router := New()
DefaultErrorWriter = buffer
handleRecovery := func(c *Context, err interface{}) {
errBuffer.WriteString(err.(string))
c.AbortWithStatus(http.StatusBadRequest)
}
router.Use(CustomRecovery(handleRecovery))
router.GET("/recovery", func(_ *Context) {
panic("Oupps, Houston, we have a problem")
})
// RUN
w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Contains(t, buffer.String(), "panic recovered")
assert.Contains(t, buffer.String(), "Oupps, Houston, we have a problem")
assert.Contains(t, buffer.String(), t.Name())
assert.NotContains(t, buffer.String(), "GET /recovery")
// Debug mode prints the request
SetMode(DebugMode)
// RUN
w = performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Contains(t, buffer.String(), "GET /recovery")
assert.Equal(t, strings.Repeat("Oupps, Houston, we have a problem", 2), errBuffer.String())
SetMode(TestMode)
}
func TestRecoveryWithWriterWithCustomRecovery(t *testing.T) {
errBuffer := new(bytes.Buffer)
buffer := new(bytes.Buffer)
router := New()
DefaultErrorWriter = buffer
handleRecovery := func(c *Context, err interface{}) {
errBuffer.WriteString(err.(string))
c.AbortWithStatus(http.StatusBadRequest)
}
router.Use(RecoveryWithWriter(DefaultErrorWriter, handleRecovery))
router.GET("/recovery", func(_ *Context) {
panic("Oupps, Houston, we have a problem")
})
// RUN
w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Contains(t, buffer.String(), "panic recovered")
assert.Contains(t, buffer.String(), "Oupps, Houston, we have a problem")
assert.Contains(t, buffer.String(), t.Name())
assert.NotContains(t, buffer.String(), "GET /recovery")
// Debug mode prints the request
SetMode(DebugMode)
// RUN
w = performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Contains(t, buffer.String(), "GET /recovery")
assert.Equal(t, strings.Repeat("Oupps, Houston, we have a problem", 2), errBuffer.String())
SetMode(TestMode)
}