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// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package httpcache
import (
"net/http"
"net/http/httptest"
"os"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
type mockFileInfo struct{}
func (m mockFileInfo) Name() string { return "gitea.test" }
func (m mockFileInfo) Size() int64 { return int64(10) }
func (m mockFileInfo) Mode() os.FileMode { return os.ModePerm }
func (m mockFileInfo) ModTime() time.Time { return time.Time{} }
func (m mockFileInfo) IsDir() bool { return false }
func (m mockFileInfo) Sys() interface{} { return nil }
func countFormalHeaders(h http.Header) (c int) {
for k := range h {
// ignore our headers for internal usage
if strings.HasPrefix(k, "X-Gitea-") {
continue
}
c++
}
return c
}
func TestHandleFileETagCache(t *testing.T) {
fi := mockFileInfo{}
etag := `"MTBnaXRlYS50ZXN0TW9uLCAwMSBKYW4gMDAwMSAwMDowMDowMCBHTVQ="`
t.Run("No_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
handled := HandleFileETagCache(req, w, fi)
assert.False(t, handled)
assert.Equal(t, 2, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Cache-Control")
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
})
t.Run("Wrong_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
req.Header.Set("If-None-Match", `"wrong etag"`)
handled := HandleFileETagCache(req, w, fi)
assert.False(t, handled)
assert.Equal(t, 2, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Cache-Control")
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
})
t.Run("Correct_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
req.Header.Set("If-None-Match", etag)
handled := HandleFileETagCache(req, w, fi)
assert.True(t, handled)
assert.Equal(t, 1, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
assert.Equal(t, http.StatusNotModified, w.Code)
})
}
func TestHandleGenericETagCache(t *testing.T) {
etag := `"test"`
t.Run("No_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
handled := HandleGenericETagCache(req, w, etag)
assert.False(t, handled)
assert.Equal(t, 2, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Cache-Control")
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
})
t.Run("Wrong_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
req.Header.Set("If-None-Match", `"wrong etag"`)
handled := HandleGenericETagCache(req, w, etag)
assert.False(t, handled)
assert.Equal(t, 2, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Cache-Control")
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
})
t.Run("Correct_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
req.Header.Set("If-None-Match", etag)
handled := HandleGenericETagCache(req, w, etag)
assert.True(t, handled)
assert.Equal(t, 1, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
assert.Equal(t, http.StatusNotModified, w.Code)
})
t.Run("Multiple_Wrong_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
req.Header.Set("If-None-Match", `"wrong etag", "wrong etag "`)
handled := HandleGenericETagCache(req, w, etag)
assert.False(t, handled)
assert.Equal(t, 2, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Cache-Control")
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
})
t.Run("Multiple_Correct_If-None-Match", func(t *testing.T) {
req := &http.Request{Header: make(http.Header)}
w := httptest.NewRecorder()
req.Header.Set("If-None-Match", `"wrong etag", `+etag)
handled := HandleGenericETagCache(req, w, etag)
assert.True(t, handled)
assert.Equal(t, 1, countFormalHeaders(w.Header()))
assert.Contains(t, w.Header(), "Etag")
assert.Equal(t, etag, w.Header().Get("Etag"))
assert.Equal(t, http.StatusNotModified, w.Code)
})
}
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