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static_serve_test.go
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package staticserve
import (
"bytes"
"errors"
"fmt"
"io"
"net/http/httptest"
"os"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/vicanso/elton"
)
const (
staticPath = "/local"
)
type MockStaticFile struct {
}
type MockFileStat struct{}
func (m *MockStaticFile) Exists(file string) bool {
return !strings.HasSuffix(file, "notfound.html")
}
func (m *MockStaticFile) Get(file string) ([]byte, error) {
if file == staticPath+"/error" {
return nil, errors.New("abcd")
}
if file == staticPath+"/index.html" {
return []byte("<html>xxx</html>"), nil
}
if file == staticPath+"/banner.jpg" {
return []byte("image data"), nil
}
return []byte("abcd"), nil
}
func (m *MockStaticFile) Stat(file string) os.FileInfo {
return &MockFileStat{}
}
func (m *MockStaticFile) NewReader(file string) (io.Reader, error) {
buf, err := m.Get(file)
if err != nil {
return nil, err
}
return bytes.NewReader(buf), nil
}
func (mf *MockFileStat) Name() string {
return "file"
}
func (mf *MockFileStat) Size() int64 {
return 1024
}
func (mf *MockFileStat) Mode() os.FileMode {
return os.ModeAppend
}
func (mf *MockFileStat) ModTime() time.Time {
t, _ := time.Parse(time.RFC3339, "2019-06-08T02:17:54Z")
return t
}
func (mf *MockFileStat) IsDir() bool {
return false
}
func (mf *MockFileStat) Sys() interface{} {
return nil
}
func TestGenerateETag(t *testing.T) {
assert := assert.New(t)
assert.Equal(generateETag([]byte("")), `"0-2jmj7l5rSw0yVb_vlWAYkK_YBwk="`)
assert.Equal(generateETag([]byte("abc")), `"3-qZk-NkcGgWq6PiVxeFDCbJzQ2J0="`)
}
func TestFS(t *testing.T) {
file := os.Args[0]
fs := FS{}
t.Run("normal", func(t *testing.T) {
assert := assert.New(t)
assert.NotNil(NewDefault(Config{}))
assert.True(fs.Exists(file), "file should be exists")
fileInfo := fs.Stat(file)
assert.NotNil(fileInfo, "stat of file shouldn't be nil")
buf, err := fs.Get(file)
assert.Nil(err)
assert.NotEmpty(buf)
})
t.Run("out of path", func(t *testing.T) {
assert := assert.New(t)
tfs := FS{}
assert.Nil(tfs.Stat("/b"), "out of path should return nil stat")
assert.False(tfs.Exists("/b"), "file should be not exists")
})
}
func TestStaticServe(t *testing.T) {
staticFile := &MockStaticFile{}
t.Run("not allow query string", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
DenyQueryString: true,
})
req := httptest.NewRequest("GET", "/index.html?a=1", nil)
c := elton.NewContext(nil, req)
err := fn(c)
assert.Equal(err, ErrNotAllowQueryString, "should return not allow query string error")
})
t.Run("not allow dot file", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
DenyDot: true,
})
req := httptest.NewRequest("GET", "/.index.html", nil)
c := elton.NewContext(nil, req)
err := fn(c)
assert.Equal(err, ErrNotAllowAccessDot, "should return not allow dot error")
})
t.Run("not found return error", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
})
req := httptest.NewRequest("GET", "/notfound.html", nil)
c := elton.NewContext(nil, req)
c.Next = func() error {
return nil
}
err := fn(c)
assert.Equal(err, ErrNotFound, "should return not found error")
})
t.Run("not found pass to next", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
NotFoundNext: true,
})
req := httptest.NewRequest("GET", "/notfound.html", nil)
c := elton.NewContext(nil, req)
done := false
c.Next = func() error {
done = true
return nil
}
err := fn(c)
assert.Nil(err)
assert.True(done)
})
t.Run("not compresss", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
EnableStrongETag: true,
})
req := httptest.NewRequest("GET", "/banner.jpg", nil)
res := httptest.NewRecorder()
c := elton.NewContext(res, req)
c.Next = func() error {
return nil
}
err := fn(c)
assert.Nil(err)
assert.NotEqual(c.GetHeader(elton.HeaderContentEncoding), "gzip")
assert.Equal(c.GetHeader(elton.HeaderETag), `"a-1oFGwuX-Q3qfLHqK_7iCcc_0YYI="`)
})
t.Run("get index.html", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
})
req := httptest.NewRequest("GET", "/index.html?a=1", nil)
res := httptest.NewRecorder()
c := elton.NewContext(res, req)
c.Next = func() error {
return nil
}
err := fn(c)
assert.Nil(err, "serve index.html fail")
assert.Equal(c.GetHeader(elton.HeaderETag), `W/"400-5cfb1ad2"`, "generate etag fail")
assert.NotEmpty(c.GetHeader(elton.HeaderLastModified), "last modified shouldn't be empty")
assert.Equal(c.GetHeader("Content-Type"), "text/html; charset=utf-8")
assert.True(c.IsReaderBody())
})
t.Run("set custom header", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
Header: map[string]string{
"X-IDC": "GZ",
},
})
req := httptest.NewRequest("GET", "/index.html", nil)
res := httptest.NewRecorder()
c := elton.NewContext(res, req)
c.Next = func() error {
return nil
}
err := fn(c)
assert.Nil(err)
assert.Equal(c.GetHeader("X-IDC"), "GZ", "set custom header fail")
})
t.Run("set (s)max-age", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
MaxAge: 24 * 3600,
SMaxAge: 300,
})
req := httptest.NewRequest("GET", "/index.html", nil)
res := httptest.NewRecorder()
c := elton.NewContext(res, req)
c.Next = func() error {
return nil
}
err := fn(c)
assert.Nil(err)
assert.Equal(c.GetHeader(elton.HeaderCacheControl), "public, max-age=86400, s-maxage=300", "set max age header fail")
})
t.Run("out of path", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
MaxAge: 24 * 3600,
SMaxAge: 300,
})
req := httptest.NewRequest("GET", "/index.html", nil)
req.URL.Path = "../../index.html"
res := httptest.NewRecorder()
c := elton.NewContext(res, req)
c.Next = func() error {
return nil
}
err := fn(c)
assert.Equal(err.Error(), "category=elton-static-serve, message=out of path", "out of path should return error")
})
t.Run("get file error", func(t *testing.T) {
assert := assert.New(t)
fn := New(staticFile, Config{
Path: staticPath,
MaxAge: 24 * 3600,
SMaxAge: 300,
})
req := httptest.NewRequest("GET", "/error", nil)
res := httptest.NewRecorder()
c := elton.NewContext(res, req)
c.Next = func() error {
return nil
}
err := fn(c)
assert.Equal(err.Error(), "category=elton-static-serve, message=abcd", "get file fail should return error")
})
}
// https://stackoverflow.com/questions/50120427/fail-unit-tests-if-coverage-is-below-certain-percentage
func TestMain(m *testing.M) {
// call flag.Parse() here if TestMain uses flags
rc := m.Run()
// rc 0 means we've passed,
// and CoverMode will be non empty if run with -cover
if rc == 0 && testing.CoverMode() != "" {
c := testing.Coverage()
if c < 0.85 {
fmt.Println("Tests passed but coverage failed at", c)
rc = -1
}
}
os.Exit(rc)
}