mirror of
https://github.com/Luzifer/nginx-sso.git
synced 2024-12-25 15:21:16 +00:00
297 lines
7.2 KiB
Go
297 lines
7.2 KiB
Go
|
// Copyright 2015 Google LLC
|
||
|
// Use of this source code is governed by a BSD-style
|
||
|
// license that can be found in the LICENSE file.
|
||
|
|
||
|
package gensupport
|
||
|
|
||
|
import (
|
||
|
"bytes"
|
||
|
"io"
|
||
|
"io/ioutil"
|
||
|
"reflect"
|
||
|
"testing"
|
||
|
"testing/iotest"
|
||
|
|
||
|
"google.golang.org/api/googleapi"
|
||
|
)
|
||
|
|
||
|
// getChunkAsString reads a chunk from mb, but does not call Next.
|
||
|
func getChunkAsString(t *testing.T, mb *MediaBuffer) (string, error) {
|
||
|
chunk, _, size, err := mb.Chunk()
|
||
|
|
||
|
buf, e := ioutil.ReadAll(chunk)
|
||
|
if e != nil {
|
||
|
t.Fatalf("Failed reading chunk: %v", e)
|
||
|
}
|
||
|
if size != len(buf) {
|
||
|
t.Fatalf("reported chunk size doesn't match actual chunk size: got: %v; want: %v", size, len(buf))
|
||
|
}
|
||
|
return string(buf), err
|
||
|
}
|
||
|
|
||
|
func TestChunking(t *testing.T) {
|
||
|
type testCase struct {
|
||
|
data string // the data to read from the Reader
|
||
|
finalErr error // error to return after data has been read
|
||
|
chunkSize int
|
||
|
wantChunks []string
|
||
|
}
|
||
|
|
||
|
for _, singleByteReads := range []bool{true, false} {
|
||
|
for _, tc := range []testCase{
|
||
|
{
|
||
|
data: "abcdefg",
|
||
|
finalErr: nil,
|
||
|
chunkSize: 3,
|
||
|
wantChunks: []string{"abc", "def", "g"},
|
||
|
},
|
||
|
{
|
||
|
data: "abcdefg",
|
||
|
finalErr: nil,
|
||
|
chunkSize: 1,
|
||
|
wantChunks: []string{"a", "b", "c", "d", "e", "f", "g"},
|
||
|
},
|
||
|
{
|
||
|
data: "abcdefg",
|
||
|
finalErr: nil,
|
||
|
chunkSize: 7,
|
||
|
wantChunks: []string{"abcdefg"},
|
||
|
},
|
||
|
{
|
||
|
data: "abcdefg",
|
||
|
finalErr: nil,
|
||
|
chunkSize: 8,
|
||
|
wantChunks: []string{"abcdefg"},
|
||
|
},
|
||
|
{
|
||
|
data: "abcdefg",
|
||
|
finalErr: io.ErrUnexpectedEOF,
|
||
|
chunkSize: 3,
|
||
|
wantChunks: []string{"abc", "def", "g"},
|
||
|
},
|
||
|
{
|
||
|
data: "abcdefg",
|
||
|
finalErr: io.ErrUnexpectedEOF,
|
||
|
chunkSize: 8,
|
||
|
wantChunks: []string{"abcdefg"},
|
||
|
},
|
||
|
} {
|
||
|
var r io.Reader = &errReader{buf: []byte(tc.data), err: tc.finalErr}
|
||
|
|
||
|
if singleByteReads {
|
||
|
r = iotest.OneByteReader(r)
|
||
|
}
|
||
|
|
||
|
mb := NewMediaBuffer(r, tc.chunkSize)
|
||
|
var gotErr error
|
||
|
got := []string{}
|
||
|
for {
|
||
|
chunk, err := getChunkAsString(t, mb)
|
||
|
if len(chunk) != 0 {
|
||
|
got = append(got, string(chunk))
|
||
|
}
|
||
|
if err != nil {
|
||
|
gotErr = err
|
||
|
break
|
||
|
}
|
||
|
mb.Next()
|
||
|
}
|
||
|
|
||
|
if !reflect.DeepEqual(got, tc.wantChunks) {
|
||
|
t.Errorf("Failed reading buffer: got: %v; want:%v", got, tc.wantChunks)
|
||
|
}
|
||
|
|
||
|
expectedErr := tc.finalErr
|
||
|
if expectedErr == nil {
|
||
|
expectedErr = io.EOF
|
||
|
}
|
||
|
if gotErr != expectedErr {
|
||
|
t.Errorf("Reading buffer error: got: %v; want: %v", gotErr, expectedErr)
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestChunkCanBeReused(t *testing.T) {
|
||
|
er := &errReader{buf: []byte("abcdefg")}
|
||
|
mb := NewMediaBuffer(er, 3)
|
||
|
|
||
|
// expectChunk reads a chunk and checks that it got what was wanted.
|
||
|
expectChunk := func(want string, wantErr error) {
|
||
|
got, err := getChunkAsString(t, mb)
|
||
|
if err != wantErr {
|
||
|
t.Errorf("error reading buffer: got: %v; want: %v", err, wantErr)
|
||
|
}
|
||
|
if !reflect.DeepEqual(got, want) {
|
||
|
t.Errorf("Failed reading buffer: got: %q; want:%q", got, want)
|
||
|
}
|
||
|
}
|
||
|
expectChunk("abc", nil)
|
||
|
// On second call, should get same chunk again.
|
||
|
expectChunk("abc", nil)
|
||
|
mb.Next()
|
||
|
expectChunk("def", nil)
|
||
|
expectChunk("def", nil)
|
||
|
mb.Next()
|
||
|
expectChunk("g", io.EOF)
|
||
|
expectChunk("g", io.EOF)
|
||
|
mb.Next()
|
||
|
expectChunk("", io.EOF)
|
||
|
}
|
||
|
|
||
|
func TestPos(t *testing.T) {
|
||
|
er := &errReader{buf: []byte("abcdefg")}
|
||
|
mb := NewMediaBuffer(er, 3)
|
||
|
|
||
|
expectChunkAtOffset := func(want int64, wantErr error) {
|
||
|
_, off, _, err := mb.Chunk()
|
||
|
if err != wantErr {
|
||
|
t.Errorf("error reading buffer: got: %v; want: %v", err, wantErr)
|
||
|
}
|
||
|
if got := off; got != want {
|
||
|
t.Errorf("resumable buffer Pos: got: %v; want: %v", got, want)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// We expect the first chunk to be at offset 0.
|
||
|
expectChunkAtOffset(0, nil)
|
||
|
// Fetching the same chunk should return the same offset.
|
||
|
expectChunkAtOffset(0, nil)
|
||
|
|
||
|
// Calling Next multiple times should only cause off to advance by 3, since off is not advanced until
|
||
|
// the chunk is actually read.
|
||
|
mb.Next()
|
||
|
mb.Next()
|
||
|
expectChunkAtOffset(3, nil)
|
||
|
|
||
|
mb.Next()
|
||
|
|
||
|
// Load the final 1-byte chunk.
|
||
|
expectChunkAtOffset(6, io.EOF)
|
||
|
|
||
|
// Next will advance 1 byte. But there are no more chunks, so off will not increase beyond 7.
|
||
|
mb.Next()
|
||
|
expectChunkAtOffset(7, io.EOF)
|
||
|
mb.Next()
|
||
|
expectChunkAtOffset(7, io.EOF)
|
||
|
}
|
||
|
|
||
|
// bytes.Reader implements both Reader and ReaderAt. The following types
|
||
|
// implement various combinations of Reader, ReaderAt and ContentTyper, by
|
||
|
// wrapping bytes.Reader. All implement at least ReaderAt, so they can be
|
||
|
// passed to ReaderAtToReader. The following table summarizes which types
|
||
|
// implement which interfaces:
|
||
|
//
|
||
|
// ReaderAt Reader ContentTyper
|
||
|
// reader x x
|
||
|
// typerReader x x x
|
||
|
// readerAt x
|
||
|
// typerReaderAt x x
|
||
|
|
||
|
// reader implements Reader, in addition to ReaderAt.
|
||
|
type reader struct {
|
||
|
r *bytes.Reader
|
||
|
}
|
||
|
|
||
|
func (r *reader) ReadAt(b []byte, off int64) (n int, err error) {
|
||
|
return r.r.ReadAt(b, off)
|
||
|
}
|
||
|
|
||
|
func (r *reader) Read(b []byte) (n int, err error) {
|
||
|
return r.r.Read(b)
|
||
|
}
|
||
|
|
||
|
// typerReader implements Reader and ContentTyper, in addition to ReaderAt.
|
||
|
type typerReader struct {
|
||
|
r *bytes.Reader
|
||
|
}
|
||
|
|
||
|
func (tr *typerReader) ReadAt(b []byte, off int64) (n int, err error) {
|
||
|
return tr.r.ReadAt(b, off)
|
||
|
}
|
||
|
|
||
|
func (tr *typerReader) Read(b []byte) (n int, err error) {
|
||
|
return tr.r.Read(b)
|
||
|
}
|
||
|
|
||
|
func (tr *typerReader) ContentType() string {
|
||
|
return "ctype"
|
||
|
}
|
||
|
|
||
|
// readerAt implements only ReaderAt.
|
||
|
type readerAt struct {
|
||
|
r *bytes.Reader
|
||
|
}
|
||
|
|
||
|
func (ra *readerAt) ReadAt(b []byte, off int64) (n int, err error) {
|
||
|
return ra.r.ReadAt(b, off)
|
||
|
}
|
||
|
|
||
|
// typerReaderAt implements ContentTyper, in addition to ReaderAt.
|
||
|
type typerReaderAt struct {
|
||
|
r *bytes.Reader
|
||
|
}
|
||
|
|
||
|
func (tra *typerReaderAt) ReadAt(b []byte, off int64) (n int, err error) {
|
||
|
return tra.r.ReadAt(b, off)
|
||
|
}
|
||
|
|
||
|
func (tra *typerReaderAt) ContentType() string {
|
||
|
return "ctype"
|
||
|
}
|
||
|
|
||
|
func TestAdapter(t *testing.T) {
|
||
|
data := "abc"
|
||
|
|
||
|
checkConversion := func(to io.Reader, wantTyper bool) {
|
||
|
if _, ok := to.(googleapi.ContentTyper); ok != wantTyper {
|
||
|
t.Errorf("reader implements typer? got: %v; want: %v", ok, wantTyper)
|
||
|
}
|
||
|
if typer, ok := to.(googleapi.ContentTyper); ok && typer.ContentType() != "ctype" {
|
||
|
t.Errorf("content type: got: %s; want: ctype", typer.ContentType())
|
||
|
}
|
||
|
buf, err := ioutil.ReadAll(to)
|
||
|
if err != nil {
|
||
|
t.Errorf("error reading data: %v", err)
|
||
|
return
|
||
|
}
|
||
|
if !bytes.Equal(buf, []byte(data)) {
|
||
|
t.Errorf("failed reading data: got: %s; want: %s", buf, data)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
type testCase struct {
|
||
|
from io.ReaderAt
|
||
|
wantTyper bool
|
||
|
}
|
||
|
for _, tc := range []testCase{
|
||
|
{
|
||
|
from: &reader{bytes.NewReader([]byte(data))},
|
||
|
wantTyper: false,
|
||
|
},
|
||
|
{
|
||
|
// Reader and ContentTyper
|
||
|
from: &typerReader{bytes.NewReader([]byte(data))},
|
||
|
wantTyper: true,
|
||
|
},
|
||
|
{
|
||
|
// ReaderAt
|
||
|
from: &readerAt{bytes.NewReader([]byte(data))},
|
||
|
wantTyper: false,
|
||
|
},
|
||
|
{
|
||
|
// ReaderAt and ContentTyper
|
||
|
from: &typerReaderAt{bytes.NewReader([]byte(data))},
|
||
|
wantTyper: true,
|
||
|
},
|
||
|
} {
|
||
|
to := ReaderAtToReader(tc.from, int64(len(data)))
|
||
|
checkConversion(to, tc.wantTyper)
|
||
|
// tc.from is a ReaderAt, and should be treated like one, even
|
||
|
// if it also implements Reader. Specifically, it can be
|
||
|
// reused and read from the beginning.
|
||
|
to = ReaderAtToReader(tc.from, int64(len(data)))
|
||
|
checkConversion(to, tc.wantTyper)
|
||
|
}
|
||
|
}
|