gin/recovery_test.go

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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.
// +build go1.7
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package gin
import (
"bytes"
"net"
"net/http"
"os"
"strings"
"syscall"
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"testing"
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"github.com/stretchr/testify/assert"
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)
// TestPanicInHandler assert that panic has been recovered.
func TestPanicInHandler(t *testing.T) {
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buffer := new(bytes.Buffer)
router := New()
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router.Use(RecoveryWithWriter(buffer))
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router.GET("/recovery", func(_ *Context) {
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panic("Oupps, Houston, we have a problem")
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})
// RUN
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w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusInternalServerError, w.Code)
assert.Contains(t, buffer.String(), "panic recovered")
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assert.Contains(t, buffer.String(), "Oupps, Houston, we have a problem")
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assert.Contains(t, buffer.String(), "TestPanicInHandler")
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")
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}
// TestPanicWithAbort assert that panic has been recovered even if context.Abort was used.
func TestPanicWithAbort(t *testing.T) {
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router := New()
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router.Use(RecoveryWithWriter(nil))
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router.GET("/recovery", func(c *Context) {
c.AbortWithStatus(http.StatusBadRequest)
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panic("Oupps, Houston, we have a problem")
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})
// RUN
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w := performRequest(router, "GET", "/recovery")
// TEST
assert.Equal(t, http.StatusBadRequest, w.Code)
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}
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)
})
}
}