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-rw-r--r--Godeps/_workspace/src/gopkg.in/bufio.v1/bufio_test.go1418
1 files changed, 0 insertions, 1418 deletions
diff --git a/Godeps/_workspace/src/gopkg.in/bufio.v1/bufio_test.go b/Godeps/_workspace/src/gopkg.in/bufio.v1/bufio_test.go
deleted file mode 100644
index f19d9bd28..000000000
--- a/Godeps/_workspace/src/gopkg.in/bufio.v1/bufio_test.go
+++ /dev/null
@@ -1,1418 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package bufio_test
-
-import (
- "bytes"
- "errors"
- "fmt"
- "io"
- "io/ioutil"
- "strings"
- "testing"
- "testing/iotest"
- "time"
- "unicode/utf8"
-
- . "gopkg.in/bufio.v1"
-)
-
-// Reads from a reader and rot13s the result.
-type rot13Reader struct {
- r io.Reader
-}
-
-func newRot13Reader(r io.Reader) *rot13Reader {
- r13 := new(rot13Reader)
- r13.r = r
- return r13
-}
-
-func (r13 *rot13Reader) Read(p []byte) (int, error) {
- n, err := r13.r.Read(p)
- if err != nil {
- return n, err
- }
- for i := 0; i < n; i++ {
- c := p[i] | 0x20 // lowercase byte
- if 'a' <= c && c <= 'm' {
- p[i] += 13
- } else if 'n' <= c && c <= 'z' {
- p[i] -= 13
- }
- }
- return n, nil
-}
-
-// Call ReadByte to accumulate the text of a file
-func readBytes(buf *Reader) string {
- var b [1000]byte
- nb := 0
- for {
- c, err := buf.ReadByte()
- if err == io.EOF {
- break
- }
- if err == nil {
- b[nb] = c
- nb++
- } else if err != iotest.ErrTimeout {
- panic("Data: " + err.Error())
- }
- }
- return string(b[0:nb])
-}
-
-func TestReaderSimple(t *testing.T) {
- data := "hello world"
- b := NewReader(strings.NewReader(data))
- if s := readBytes(b); s != "hello world" {
- t.Errorf("simple hello world test failed: got %q", s)
- }
-
- b = NewReader(newRot13Reader(strings.NewReader(data)))
- if s := readBytes(b); s != "uryyb jbeyq" {
- t.Errorf("rot13 hello world test failed: got %q", s)
- }
-}
-
-type readMaker struct {
- name string
- fn func(io.Reader) io.Reader
-}
-
-var readMakers = []readMaker{
- {"full", func(r io.Reader) io.Reader { return r }},
- {"byte", iotest.OneByteReader},
- {"half", iotest.HalfReader},
- {"data+err", iotest.DataErrReader},
- {"timeout", iotest.TimeoutReader},
-}
-
-// Call ReadString (which ends up calling everything else)
-// to accumulate the text of a file.
-func readLines(b *Reader) string {
- s := ""
- for {
- s1, err := b.ReadString('\n')
- if err == io.EOF {
- break
- }
- if err != nil && err != iotest.ErrTimeout {
- panic("GetLines: " + err.Error())
- }
- s += s1
- }
- return s
-}
-
-// Call Read to accumulate the text of a file
-func reads(buf *Reader, m int) string {
- var b [1000]byte
- nb := 0
- for {
- n, err := buf.Read(b[nb : nb+m])
- nb += n
- if err == io.EOF {
- break
- }
- }
- return string(b[0:nb])
-}
-
-type bufReader struct {
- name string
- fn func(*Reader) string
-}
-
-var bufreaders = []bufReader{
- {"1", func(b *Reader) string { return reads(b, 1) }},
- {"2", func(b *Reader) string { return reads(b, 2) }},
- {"3", func(b *Reader) string { return reads(b, 3) }},
- {"4", func(b *Reader) string { return reads(b, 4) }},
- {"5", func(b *Reader) string { return reads(b, 5) }},
- {"7", func(b *Reader) string { return reads(b, 7) }},
- {"bytes", readBytes},
- {"lines", readLines},
-}
-
-const minReadBufferSize = 16
-
-var bufsizes = []int{
- 0, minReadBufferSize, 23, 32, 46, 64, 93, 128, 1024, 4096,
-}
-
-func TestReader(t *testing.T) {
- var texts [31]string
- str := ""
- all := ""
- for i := 0; i < len(texts)-1; i++ {
- texts[i] = str + "\n"
- all += texts[i]
- str += string(i%26 + 'a')
- }
- texts[len(texts)-1] = all
-
- for h := 0; h < len(texts); h++ {
- text := texts[h]
- for i := 0; i < len(readMakers); i++ {
- for j := 0; j < len(bufreaders); j++ {
- for k := 0; k < len(bufsizes); k++ {
- readmaker := readMakers[i]
- bufreader := bufreaders[j]
- bufsize := bufsizes[k]
- read := readmaker.fn(strings.NewReader(text))
- buf := NewReaderSize(read, bufsize)
- s := bufreader.fn(buf)
- if s != text {
- t.Errorf("reader=%s fn=%s bufsize=%d want=%q got=%q",
- readmaker.name, bufreader.name, bufsize, text, s)
- }
- }
- }
- }
- }
-}
-
-type zeroReader struct{}
-
-func (zeroReader) Read(p []byte) (int, error) {
- return 0, nil
-}
-
-func TestZeroReader(t *testing.T) {
- var z zeroReader
- r := NewReader(z)
-
- c := make(chan error)
- go func() {
- _, err := r.ReadByte()
- c <- err
- }()
-
- select {
- case err := <-c:
- if err == nil {
- t.Error("error expected")
- } else if err != io.ErrNoProgress {
- t.Error("unexpected error:", err)
- }
- case <-time.After(time.Second):
- t.Error("test timed out (endless loop in ReadByte?)")
- }
-}
-
-// A StringReader delivers its data one string segment at a time via Read.
-type StringReader struct {
- data []string
- step int
-}
-
-func (r *StringReader) Read(p []byte) (n int, err error) {
- if r.step < len(r.data) {
- s := r.data[r.step]
- n = copy(p, s)
- r.step++
- } else {
- err = io.EOF
- }
- return
-}
-
-func readRuneSegments(t *testing.T, segments []string) {
- got := ""
- want := strings.Join(segments, "")
- r := NewReader(&StringReader{data: segments})
- for {
- r, _, err := r.ReadRune()
- if err != nil {
- if err != io.EOF {
- return
- }
- break
- }
- got += string(r)
- }
- if got != want {
- t.Errorf("segments=%v got=%s want=%s", segments, got, want)
- }
-}
-
-var segmentList = [][]string{
- {},
- {""},
- {"日", "本語"},
- {"\u65e5", "\u672c", "\u8a9e"},
- {"\U000065e5", "\U0000672c", "\U00008a9e"},
- {"\xe6", "\x97\xa5\xe6", "\x9c\xac\xe8\xaa\x9e"},
- {"Hello", ", ", "World", "!"},
- {"Hello", ", ", "", "World", "!"},
-}
-
-func TestReadRune(t *testing.T) {
- for _, s := range segmentList {
- readRuneSegments(t, s)
- }
-}
-
-func TestUnreadRune(t *testing.T) {
- segments := []string{"Hello, world:", "日本語"}
- r := NewReader(&StringReader{data: segments})
- got := ""
- want := strings.Join(segments, "")
- // Normal execution.
- for {
- r1, _, err := r.ReadRune()
- if err != nil {
- if err != io.EOF {
- t.Error("unexpected error on ReadRune:", err)
- }
- break
- }
- got += string(r1)
- // Put it back and read it again.
- if err = r.UnreadRune(); err != nil {
- t.Fatal("unexpected error on UnreadRune:", err)
- }
- r2, _, err := r.ReadRune()
- if err != nil {
- t.Fatal("unexpected error reading after unreading:", err)
- }
- if r1 != r2 {
- t.Fatalf("incorrect rune after unread: got %c, want %c", r1, r2)
- }
- }
- if got != want {
- t.Errorf("got %q, want %q", got, want)
- }
-}
-
-func TestReaderUnreadByte(t *testing.T) {
- segments := []string{"Hello, ", "world"}
- r := NewReader(&StringReader{data: segments})
- got := ""
- want := strings.Join(segments, "")
- // Normal execution.
- for {
- b1, err := r.ReadByte()
- if err != nil {
- if err != io.EOF {
- t.Error("unexpected error on ReadByte:", err)
- }
- break
- }
- got += string(b1)
- // Put it back and read it again.
- if err = r.UnreadByte(); err != nil {
- t.Fatal("unexpected error on UnreadByte:", err)
- }
- b2, err := r.ReadByte()
- if err != nil {
- t.Fatal("unexpected error reading after unreading:", err)
- }
- if b1 != b2 {
- t.Fatalf("incorrect byte after unread: got %q, want %q", b1, b2)
- }
- }
- if got != want {
- t.Errorf("got %q, want %q", got, want)
- }
-}
-
-func TestUnreadByteMultiple(t *testing.T) {
- segments := []string{"Hello, ", "world"}
- data := strings.Join(segments, "")
- for n := 0; n <= len(data); n++ {
- r := NewReader(&StringReader{data: segments})
- // Read n bytes.
- for i := 0; i < n; i++ {
- b, err := r.ReadByte()
- if err != nil {
- t.Fatalf("n = %d: unexpected error on ReadByte: %v", n, err)
- }
- if b != data[i] {
- t.Fatalf("n = %d: incorrect byte returned from ReadByte: got %q, want %q", n, b, data[i])
- }
- }
- // Unread one byte if there is one.
- if n > 0 {
- if err := r.UnreadByte(); err != nil {
- t.Errorf("n = %d: unexpected error on UnreadByte: %v", n, err)
- }
- }
- // Test that we cannot unread any further.
- if err := r.UnreadByte(); err == nil {
- t.Errorf("n = %d: expected error on UnreadByte", n)
- }
- }
-}
-
-func TestUnreadByteOthers(t *testing.T) {
- // A list of readers to use in conjunction with UnreadByte.
- var readers = []func(*Reader, byte) ([]byte, error){
- (*Reader).ReadBytes,
- (*Reader).ReadSlice,
- func(r *Reader, delim byte) ([]byte, error) {
- data, err := r.ReadString(delim)
- return []byte(data), err
- },
- // ReadLine doesn't fit the data/pattern easily
- // so we leave it out. It should be covered via
- // the ReadSlice test since ReadLine simply calls
- // ReadSlice, and it's that function that handles
- // the last byte.
- }
-
- // Try all readers with UnreadByte.
- for rno, read := range readers {
- // Some input data that is longer than the minimum reader buffer size.
- const n = 10
- var buf bytes.Buffer
- for i := 0; i < n; i++ {
- buf.WriteString("abcdefg")
- }
-
- r := NewReaderSize(&buf, minReadBufferSize)
- readTo := func(delim byte, want string) {
- data, err := read(r, delim)
- if err != nil {
- t.Fatalf("#%d: unexpected error reading to %c: %v", rno, delim, err)
- }
- if got := string(data); got != want {
- t.Fatalf("#%d: got %q, want %q", rno, got, want)
- }
- }
-
- // Read the data with occasional UnreadByte calls.
- for i := 0; i < n; i++ {
- readTo('d', "abcd")
- for j := 0; j < 3; j++ {
- if err := r.UnreadByte(); err != nil {
- t.Fatalf("#%d: unexpected error on UnreadByte: %v", rno, err)
- }
- readTo('d', "d")
- }
- readTo('g', "efg")
- }
-
- // All data should have been read.
- _, err := r.ReadByte()
- if err != io.EOF {
- t.Errorf("#%d: got error %v; want EOF", rno, err)
- }
- }
-}
-
-// Test that UnreadRune fails if the preceding operation was not a ReadRune.
-func TestUnreadRuneError(t *testing.T) {
- buf := make([]byte, 3) // All runes in this test are 3 bytes long
- r := NewReader(&StringReader{data: []string{"日本語日本語日本語"}})
- if r.UnreadRune() == nil {
- t.Error("expected error on UnreadRune from fresh buffer")
- }
- _, _, err := r.ReadRune()
- if err != nil {
- t.Error("unexpected error on ReadRune (1):", err)
- }
- if err = r.UnreadRune(); err != nil {
- t.Error("unexpected error on UnreadRune (1):", err)
- }
- if r.UnreadRune() == nil {
- t.Error("expected error after UnreadRune (1)")
- }
- // Test error after Read.
- _, _, err = r.ReadRune() // reset state
- if err != nil {
- t.Error("unexpected error on ReadRune (2):", err)
- }
- _, err = r.Read(buf)
- if err != nil {
- t.Error("unexpected error on Read (2):", err)
- }
- if r.UnreadRune() == nil {
- t.Error("expected error after Read (2)")
- }
- // Test error after ReadByte.
- _, _, err = r.ReadRune() // reset state
- if err != nil {
- t.Error("unexpected error on ReadRune (2):", err)
- }
- for _ = range buf {
- _, err = r.ReadByte()
- if err != nil {
- t.Error("unexpected error on ReadByte (2):", err)
- }
- }
- if r.UnreadRune() == nil {
- t.Error("expected error after ReadByte")
- }
- // Test error after UnreadByte.
- _, _, err = r.ReadRune() // reset state
- if err != nil {
- t.Error("unexpected error on ReadRune (3):", err)
- }
- _, err = r.ReadByte()
- if err != nil {
- t.Error("unexpected error on ReadByte (3):", err)
- }
- err = r.UnreadByte()
- if err != nil {
- t.Error("unexpected error on UnreadByte (3):", err)
- }
- if r.UnreadRune() == nil {
- t.Error("expected error after UnreadByte (3)")
- }
-}
-
-func TestUnreadRuneAtEOF(t *testing.T) {
- // UnreadRune/ReadRune should error at EOF (was a bug; used to panic)
- r := NewReader(strings.NewReader("x"))
- r.ReadRune()
- r.ReadRune()
- r.UnreadRune()
- _, _, err := r.ReadRune()
- if err == nil {
- t.Error("expected error at EOF")
- } else if err != io.EOF {
- t.Error("expected EOF; got", err)
- }
-}
-
-func TestReadWriteRune(t *testing.T) {
- const NRune = 1000
- byteBuf := new(bytes.Buffer)
- w := NewWriter(byteBuf)
- // Write the runes out using WriteRune
- buf := make([]byte, utf8.UTFMax)
- for r := rune(0); r < NRune; r++ {
- size := utf8.EncodeRune(buf, r)
- nbytes, err := w.WriteRune(r)
- if err != nil {
- t.Fatalf("WriteRune(0x%x) error: %s", r, err)
- }
- if nbytes != size {
- t.Fatalf("WriteRune(0x%x) expected %d, got %d", r, size, nbytes)
- }
- }
- w.Flush()
-
- r := NewReader(byteBuf)
- // Read them back with ReadRune
- for r1 := rune(0); r1 < NRune; r1++ {
- size := utf8.EncodeRune(buf, r1)
- nr, nbytes, err := r.ReadRune()
- if nr != r1 || nbytes != size || err != nil {
- t.Fatalf("ReadRune(0x%x) got 0x%x,%d not 0x%x,%d (err=%s)", r1, nr, nbytes, r1, size, err)
- }
- }
-}
-
-func TestWriter(t *testing.T) {
- var data [8192]byte
-
- for i := 0; i < len(data); i++ {
- data[i] = byte(' ' + i%('~'-' '))
- }
- w := new(bytes.Buffer)
- for i := 0; i < len(bufsizes); i++ {
- for j := 0; j < len(bufsizes); j++ {
- nwrite := bufsizes[i]
- bs := bufsizes[j]
-
- // Write nwrite bytes using buffer size bs.
- // Check that the right amount makes it out
- // and that the data is correct.
-
- w.Reset()
- buf := NewWriterSize(w, bs)
- context := fmt.Sprintf("nwrite=%d bufsize=%d", nwrite, bs)
- n, e1 := buf.Write(data[0:nwrite])
- if e1 != nil || n != nwrite {
- t.Errorf("%s: buf.Write %d = %d, %v", context, nwrite, n, e1)
- continue
- }
- if e := buf.Flush(); e != nil {
- t.Errorf("%s: buf.Flush = %v", context, e)
- }
-
- written := w.Bytes()
- if len(written) != nwrite {
- t.Errorf("%s: %d bytes written", context, len(written))
- }
- for l := 0; l < len(written); l++ {
- if written[i] != data[i] {
- t.Errorf("wrong bytes written")
- t.Errorf("want=%q", data[0:len(written)])
- t.Errorf("have=%q", written)
- }
- }
- }
- }
-}
-
-// Check that write errors are returned properly.
-
-type errorWriterTest struct {
- n, m int
- err error
- expect error
-}
-
-func (w errorWriterTest) Write(p []byte) (int, error) {
- return len(p) * w.n / w.m, w.err
-}
-
-var errorWriterTests = []errorWriterTest{
- {0, 1, nil, io.ErrShortWrite},
- {1, 2, nil, io.ErrShortWrite},
- {1, 1, nil, nil},
- {0, 1, io.ErrClosedPipe, io.ErrClosedPipe},
- {1, 2, io.ErrClosedPipe, io.ErrClosedPipe},
- {1, 1, io.ErrClosedPipe, io.ErrClosedPipe},
-}
-
-func TestWriteErrors(t *testing.T) {
- for _, w := range errorWriterTests {
- buf := NewWriter(w)
- _, e := buf.Write([]byte("hello world"))
- if e != nil {
- t.Errorf("Write hello to %v: %v", w, e)
- continue
- }
- // Two flushes, to verify the error is sticky.
- for i := 0; i < 2; i++ {
- e = buf.Flush()
- if e != w.expect {
- t.Errorf("Flush %d/2 %v: got %v, wanted %v", i+1, w, e, w.expect)
- }
- }
- }
-}
-
-func TestNewReaderSizeIdempotent(t *testing.T) {
- const BufSize = 1000
- b := NewReaderSize(strings.NewReader("hello world"), BufSize)
- // Does it recognize itself?
- b1 := NewReaderSize(b, BufSize)
- if b1 != b {
- t.Error("NewReaderSize did not detect underlying Reader")
- }
- // Does it wrap if existing buffer is too small?
- b2 := NewReaderSize(b, 2*BufSize)
- if b2 == b {
- t.Error("NewReaderSize did not enlarge buffer")
- }
-}
-
-func TestNewWriterSizeIdempotent(t *testing.T) {
- const BufSize = 1000
- b := NewWriterSize(new(bytes.Buffer), BufSize)
- // Does it recognize itself?
- b1 := NewWriterSize(b, BufSize)
- if b1 != b {
- t.Error("NewWriterSize did not detect underlying Writer")
- }
- // Does it wrap if existing buffer is too small?
- b2 := NewWriterSize(b, 2*BufSize)
- if b2 == b {
- t.Error("NewWriterSize did not enlarge buffer")
- }
-}
-
-func TestWriteString(t *testing.T) {
- const BufSize = 8
- buf := new(bytes.Buffer)
- b := NewWriterSize(buf, BufSize)
- b.WriteString("0") // easy
- b.WriteString("123456") // still easy
- b.WriteString("7890") // easy after flush
- b.WriteString("abcdefghijklmnopqrstuvwxy") // hard
- b.WriteString("z")
- if err := b.Flush(); err != nil {
- t.Error("WriteString", err)
- }
- s := "01234567890abcdefghijklmnopqrstuvwxyz"
- if string(buf.Bytes()) != s {
- t.Errorf("WriteString wants %q gets %q", s, string(buf.Bytes()))
- }
-}
-
-func TestBufferFull(t *testing.T) {
- const longString = "And now, hello, world! It is the time for all good men to come to the aid of their party"
- buf := NewReaderSize(strings.NewReader(longString), minReadBufferSize)
- line, err := buf.ReadSlice('!')
- if string(line) != "And now, hello, " || err != ErrBufferFull {
- t.Errorf("first ReadSlice(,) = %q, %v", line, err)
- }
- line, err = buf.ReadSlice('!')
- if string(line) != "world!" || err != nil {
- t.Errorf("second ReadSlice(,) = %q, %v", line, err)
- }
-}
-
-func TestPeek(t *testing.T) {
- p := make([]byte, 10)
- // string is 16 (minReadBufferSize) long.
- buf := NewReaderSize(strings.NewReader("abcdefghijklmnop"), minReadBufferSize)
- if s, err := buf.Peek(1); string(s) != "a" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "a", string(s), err)
- }
- if s, err := buf.Peek(4); string(s) != "abcd" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "abcd", string(s), err)
- }
- if _, err := buf.Peek(-1); err != ErrNegativeCount {
- t.Fatalf("want ErrNegativeCount got %v", err)
- }
- if _, err := buf.Peek(32); err != ErrBufferFull {
- t.Fatalf("want ErrBufFull got %v", err)
- }
- if _, err := buf.Read(p[0:3]); string(p[0:3]) != "abc" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "abc", string(p[0:3]), err)
- }
- if s, err := buf.Peek(1); string(s) != "d" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "d", string(s), err)
- }
- if s, err := buf.Peek(2); string(s) != "de" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "de", string(s), err)
- }
- if _, err := buf.Read(p[0:3]); string(p[0:3]) != "def" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "def", string(p[0:3]), err)
- }
- if s, err := buf.Peek(4); string(s) != "ghij" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "ghij", string(s), err)
- }
- if _, err := buf.Read(p[0:]); string(p[0:]) != "ghijklmnop" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "ghijklmnop", string(p[0:minReadBufferSize]), err)
- }
- if s, err := buf.Peek(0); string(s) != "" || err != nil {
- t.Fatalf("want %q got %q, err=%v", "", string(s), err)
- }
- if _, err := buf.Peek(1); err != io.EOF {
- t.Fatalf("want EOF got %v", err)
- }
-
- // Test for issue 3022, not exposing a reader's error on a successful Peek.
- buf = NewReaderSize(dataAndEOFReader("abcd"), 32)
- if s, err := buf.Peek(2); string(s) != "ab" || err != nil {
- t.Errorf(`Peek(2) on "abcd", EOF = %q, %v; want "ab", nil`, string(s), err)
- }
- if s, err := buf.Peek(4); string(s) != "abcd" || err != nil {
- t.Errorf(`Peek(4) on "abcd", EOF = %q, %v; want "abcd", nil`, string(s), err)
- }
- if n, err := buf.Read(p[0:5]); string(p[0:n]) != "abcd" || err != nil {
- t.Fatalf("Read after peek = %q, %v; want abcd, EOF", p[0:n], err)
- }
- if n, err := buf.Read(p[0:1]); string(p[0:n]) != "" || err != io.EOF {
- t.Fatalf(`second Read after peek = %q, %v; want "", EOF`, p[0:n], err)
- }
-}
-
-type dataAndEOFReader string
-
-func (r dataAndEOFReader) Read(p []byte) (int, error) {
- return copy(p, r), io.EOF
-}
-
-func TestPeekThenUnreadRune(t *testing.T) {
- // This sequence used to cause a crash.
- r := NewReader(strings.NewReader("x"))
- r.ReadRune()
- r.Peek(1)
- r.UnreadRune()
- r.ReadRune() // Used to panic here
-}
-
-var testOutput = []byte("0123456789abcdefghijklmnopqrstuvwxy")
-var testInput = []byte("012\n345\n678\n9ab\ncde\nfgh\nijk\nlmn\nopq\nrst\nuvw\nxy")
-var testInputrn = []byte("012\r\n345\r\n678\r\n9ab\r\ncde\r\nfgh\r\nijk\r\nlmn\r\nopq\r\nrst\r\nuvw\r\nxy\r\n\n\r\n")
-
-// TestReader wraps a []byte and returns reads of a specific length.
-type testReader struct {
- data []byte
- stride int
-}
-
-func (t *testReader) Read(buf []byte) (n int, err error) {
- n = t.stride
- if n > len(t.data) {
- n = len(t.data)
- }
- if n > len(buf) {
- n = len(buf)
- }
- copy(buf, t.data)
- t.data = t.data[n:]
- if len(t.data) == 0 {
- err = io.EOF
- }
- return
-}
-
-func testReadLine(t *testing.T, input []byte) {
- //for stride := 1; stride < len(input); stride++ {
- for stride := 1; stride < 2; stride++ {
- done := 0
- reader := testReader{input, stride}
- l := NewReaderSize(&reader, len(input)+1)
- for {
- line, isPrefix, err := l.ReadLine()
- if len(line) > 0 && err != nil {
- t.Errorf("ReadLine returned both data and error: %s", err)
- }
- if isPrefix {
- t.Errorf("ReadLine returned prefix")
- }
- if err != nil {
- if err != io.EOF {
- t.Fatalf("Got unknown error: %s", err)
- }
- break
- }
- if want := testOutput[done : done+len(line)]; !bytes.Equal(want, line) {
- t.Errorf("Bad line at stride %d: want: %x got: %x", stride, want, line)
- }
- done += len(line)
- }
- if done != len(testOutput) {
- t.Errorf("ReadLine didn't return everything: got: %d, want: %d (stride: %d)", done, len(testOutput), stride)
- }
- }
-}
-
-func TestReadLine(t *testing.T) {
- testReadLine(t, testInput)
- testReadLine(t, testInputrn)
-}
-
-func TestLineTooLong(t *testing.T) {
- data := make([]byte, 0)
- for i := 0; i < minReadBufferSize*5/2; i++ {
- data = append(data, '0'+byte(i%10))
- }
- buf := bytes.NewReader(data)
- l := NewReaderSize(buf, minReadBufferSize)
- line, isPrefix, err := l.ReadLine()
- if !isPrefix || !bytes.Equal(line, data[:minReadBufferSize]) || err != nil {
- t.Errorf("bad result for first line: got %q want %q %v", line, data[:minReadBufferSize], err)
- }
- data = data[len(line):]
- line, isPrefix, err = l.ReadLine()
- if !isPrefix || !bytes.Equal(line, data[:minReadBufferSize]) || err != nil {
- t.Errorf("bad result for second line: got %q want %q %v", line, data[:minReadBufferSize], err)
- }
- data = data[len(line):]
- line, isPrefix, err = l.ReadLine()
- if isPrefix || !bytes.Equal(line, data[:minReadBufferSize/2]) || err != nil {
- t.Errorf("bad result for third line: got %q want %q %v", line, data[:minReadBufferSize/2], err)
- }
- line, isPrefix, err = l.ReadLine()
- if isPrefix || err == nil {
- t.Errorf("expected no more lines: %x %s", line, err)
- }
-}
-
-func TestReadAfterLines(t *testing.T) {
- line1 := "this is line1"
- restData := "this is line2\nthis is line 3\n"
- inbuf := bytes.NewReader([]byte(line1 + "\n" + restData))
- outbuf := new(bytes.Buffer)
- maxLineLength := len(line1) + len(restData)/2
- l := NewReaderSize(inbuf, maxLineLength)
- line, isPrefix, err := l.ReadLine()
- if isPrefix || err != nil || string(line) != line1 {
- t.Errorf("bad result for first line: isPrefix=%v err=%v line=%q", isPrefix, err, string(line))
- }
- n, err := io.Copy(outbuf, l)
- if int(n) != len(restData) || err != nil {
- t.Errorf("bad result for Read: n=%d err=%v", n, err)
- }
- if outbuf.String() != restData {
- t.Errorf("bad result for Read: got %q; expected %q", outbuf.String(), restData)
- }
-}
-
-func TestReadEmptyBuffer(t *testing.T) {
- l := NewReaderSize(new(bytes.Buffer), minReadBufferSize)
- line, isPrefix, err := l.ReadLine()
- if err != io.EOF {
- t.Errorf("expected EOF from ReadLine, got '%s' %t %s", line, isPrefix, err)
- }
-}
-
-func TestLinesAfterRead(t *testing.T) {
- l := NewReaderSize(bytes.NewReader([]byte("foo")), minReadBufferSize)
- _, err := ioutil.ReadAll(l)
- if err != nil {
- t.Error(err)
- return
- }
-
- line, isPrefix, err := l.ReadLine()
- if err != io.EOF {
- t.Errorf("expected EOF from ReadLine, got '%s' %t %s", line, isPrefix, err)
- }
-}
-
-func TestReadLineNonNilLineOrError(t *testing.T) {
- r := NewReader(strings.NewReader("line 1\n"))
- for i := 0; i < 2; i++ {
- l, _, err := r.ReadLine()
- if l != nil && err != nil {
- t.Fatalf("on line %d/2; ReadLine=%#v, %v; want non-nil line or Error, but not both",
- i+1, l, err)
- }
- }
-}
-
-type readLineResult struct {
- line []byte
- isPrefix bool
- err error
-}
-
-var readLineNewlinesTests = []struct {
- input string
- expect []readLineResult
-}{
- {"012345678901234\r\n012345678901234\r\n", []readLineResult{
- {[]byte("012345678901234"), true, nil},
- {nil, false, nil},
- {[]byte("012345678901234"), true, nil},
- {nil, false, nil},
- {nil, false, io.EOF},
- }},
- {"0123456789012345\r012345678901234\r", []readLineResult{
- {[]byte("0123456789012345"), true, nil},
- {[]byte("\r012345678901234"), true, nil},
- {[]byte("\r"), false, nil},
- {nil, false, io.EOF},
- }},
-}
-
-func TestReadLineNewlines(t *testing.T) {
- for _, e := range readLineNewlinesTests {
- testReadLineNewlines(t, e.input, e.expect)
- }
-}
-
-func testReadLineNewlines(t *testing.T, input string, expect []readLineResult) {
- b := NewReaderSize(strings.NewReader(input), minReadBufferSize)
- for i, e := range expect {
- line, isPrefix, err := b.ReadLine()
- if !bytes.Equal(line, e.line) {
- t.Errorf("%q call %d, line == %q, want %q", input, i, line, e.line)
- return
- }
- if isPrefix != e.isPrefix {
- t.Errorf("%q call %d, isPrefix == %v, want %v", input, i, isPrefix, e.isPrefix)
- return
- }
- if err != e.err {
- t.Errorf("%q call %d, err == %v, want %v", input, i, err, e.err)
- return
- }
- }
-}
-
-func createTestInput(n int) []byte {
- input := make([]byte, n)
- for i := range input {
- // 101 and 251 are arbitrary prime numbers.
- // The idea is to create an input sequence
- // which doesn't repeat too frequently.
- input[i] = byte(i % 251)
- if i%101 == 0 {
- input[i] ^= byte(i / 101)
- }
- }
- return input
-}
-
-func TestReaderWriteTo(t *testing.T) {
- input := createTestInput(8192)
- r := NewReader(onlyReader{bytes.NewReader(input)})
- w := new(bytes.Buffer)
- if n, err := r.WriteTo(w); err != nil || n != int64(len(input)) {
- t.Fatalf("r.WriteTo(w) = %d, %v, want %d, nil", n, err, len(input))
- }
-
- for i, val := range w.Bytes() {
- if val != input[i] {
- t.Errorf("after write: out[%d] = %#x, want %#x", i, val, input[i])
- }
- }
-}
-
-type errorWriterToTest struct {
- rn, wn int
- rerr, werr error
- expected error
-}
-
-func (r errorWriterToTest) Read(p []byte) (int, error) {
- return len(p) * r.rn, r.rerr
-}
-
-func (w errorWriterToTest) Write(p []byte) (int, error) {
- return len(p) * w.wn, w.werr
-}
-
-var errorWriterToTests = []errorWriterToTest{
- {1, 0, nil, io.ErrClosedPipe, io.ErrClosedPipe},
- {0, 1, io.ErrClosedPipe, nil, io.ErrClosedPipe},
- {0, 0, io.ErrUnexpectedEOF, io.ErrClosedPipe, io.ErrClosedPipe},
- {0, 1, io.EOF, nil, nil},
-}
-
-func TestReaderWriteToErrors(t *testing.T) {
- for i, rw := range errorWriterToTests {
- r := NewReader(rw)
- if _, err := r.WriteTo(rw); err != rw.expected {
- t.Errorf("r.WriteTo(errorWriterToTests[%d]) = _, %v, want _,%v", i, err, rw.expected)
- }
- }
-}
-
-func TestWriterReadFrom(t *testing.T) {
- ws := []func(io.Writer) io.Writer{
- func(w io.Writer) io.Writer { return onlyWriter{w} },
- func(w io.Writer) io.Writer { return w },
- }
-
- rs := []func(io.Reader) io.Reader{
- iotest.DataErrReader,
- func(r io.Reader) io.Reader { return r },
- }
-
- for ri, rfunc := range rs {
- for wi, wfunc := range ws {
- input := createTestInput(8192)
- b := new(bytes.Buffer)
- w := NewWriter(wfunc(b))
- r := rfunc(bytes.NewReader(input))
- if n, err := w.ReadFrom(r); err != nil || n != int64(len(input)) {
- t.Errorf("ws[%d],rs[%d]: w.ReadFrom(r) = %d, %v, want %d, nil", wi, ri, n, err, len(input))
- continue
- }
- if err := w.Flush(); err != nil {
- t.Errorf("Flush returned %v", err)
- continue
- }
- if got, want := b.String(), string(input); got != want {
- t.Errorf("ws[%d], rs[%d]:\ngot %q\nwant %q\n", wi, ri, got, want)
- }
- }
- }
-}
-
-type errorReaderFromTest struct {
- rn, wn int
- rerr, werr error
- expected error
-}
-
-func (r errorReaderFromTest) Read(p []byte) (int, error) {
- return len(p) * r.rn, r.rerr
-}
-
-func (w errorReaderFromTest) Write(p []byte) (int, error) {
- return len(p) * w.wn, w.werr
-}
-
-var errorReaderFromTests = []errorReaderFromTest{
- {0, 1, io.EOF, nil, nil},
- {1, 1, io.EOF, nil, nil},
- {0, 1, io.ErrClosedPipe, nil, io.ErrClosedPipe},
- {0, 0, io.ErrClosedPipe, io.ErrShortWrite, io.ErrClosedPipe},
- {1, 0, nil, io.ErrShortWrite, io.ErrShortWrite},
-}
-
-func TestWriterReadFromErrors(t *testing.T) {
- for i, rw := range errorReaderFromTests {
- w := NewWriter(rw)
- if _, err := w.ReadFrom(rw); err != rw.expected {
- t.Errorf("w.ReadFrom(errorReaderFromTests[%d]) = _, %v, want _,%v", i, err, rw.expected)
- }
- }
-}
-
-// TestWriterReadFromCounts tests that using io.Copy to copy into a
-// bufio.Writer does not prematurely flush the buffer. For example, when
-// buffering writes to a network socket, excessive network writes should be
-// avoided.
-func TestWriterReadFromCounts(t *testing.T) {
- var w0 writeCountingDiscard
- b0 := NewWriterSize(&w0, 1234)
- b0.WriteString(strings.Repeat("x", 1000))
- if w0 != 0 {
- t.Fatalf("write 1000 'x's: got %d writes, want 0", w0)
- }
- b0.WriteString(strings.Repeat("x", 200))
- if w0 != 0 {
- t.Fatalf("write 1200 'x's: got %d writes, want 0", w0)
- }
- io.Copy(b0, onlyReader{strings.NewReader(strings.Repeat("x", 30))})
- if w0 != 0 {
- t.Fatalf("write 1230 'x's: got %d writes, want 0", w0)
- }
- io.Copy(b0, onlyReader{strings.NewReader(strings.Repeat("x", 9))})
- if w0 != 1 {
- t.Fatalf("write 1239 'x's: got %d writes, want 1", w0)
- }
-
- var w1 writeCountingDiscard
- b1 := NewWriterSize(&w1, 1234)
- b1.WriteString(strings.Repeat("x", 1200))
- b1.Flush()
- if w1 != 1 {
- t.Fatalf("flush 1200 'x's: got %d writes, want 1", w1)
- }
- b1.WriteString(strings.Repeat("x", 89))
- if w1 != 1 {
- t.Fatalf("write 1200 + 89 'x's: got %d writes, want 1", w1)
- }
- io.Copy(b1, onlyReader{strings.NewReader(strings.Repeat("x", 700))})
- if w1 != 1 {
- t.Fatalf("write 1200 + 789 'x's: got %d writes, want 1", w1)
- }
- io.Copy(b1, onlyReader{strings.NewReader(strings.Repeat("x", 600))})
- if w1 != 2 {
- t.Fatalf("write 1200 + 1389 'x's: got %d writes, want 2", w1)
- }
- b1.Flush()
- if w1 != 3 {
- t.Fatalf("flush 1200 + 1389 'x's: got %d writes, want 3", w1)
- }
-}
-
-// A writeCountingDiscard is like ioutil.Discard and counts the number of times
-// Write is called on it.
-type writeCountingDiscard int
-
-func (w *writeCountingDiscard) Write(p []byte) (int, error) {
- *w++
- return len(p), nil
-}
-
-type negativeReader int
-
-func (r *negativeReader) Read([]byte) (int, error) { return -1, nil }
-
-func TestNegativeRead(t *testing.T) {
- // should panic with a description pointing at the reader, not at itself.
- // (should NOT panic with slice index error, for example.)
- b := NewReader(new(negativeReader))
- defer func() {
- switch err := recover().(type) {
- case nil:
- t.Fatal("read did not panic")
- case error:
- if !strings.Contains(err.Error(), "reader returned negative count from Read") {
- t.Fatalf("wrong panic: %v", err)
- }
- default:
- t.Fatalf("unexpected panic value: %T(%v)", err, err)
- }
- }()
- b.Read(make([]byte, 100))
-}
-
-var errFake = errors.New("fake error")
-
-type errorThenGoodReader struct {
- didErr bool
- nread int
-}
-
-func (r *errorThenGoodReader) Read(p []byte) (int, error) {
- r.nread++
- if !r.didErr {
- r.didErr = true
- return 0, errFake
- }
- return len(p), nil
-}
-
-func TestReaderClearError(t *testing.T) {
- r := &errorThenGoodReader{}
- b := NewReader(r)
- buf := make([]byte, 1)
- if _, err := b.Read(nil); err != nil {
- t.Fatalf("1st nil Read = %v; want nil", err)
- }
- if _, err := b.Read(buf); err != errFake {
- t.Fatalf("1st Read = %v; want errFake", err)
- }
- if _, err := b.Read(nil); err != nil {
- t.Fatalf("2nd nil Read = %v; want nil", err)
- }
- if _, err := b.Read(buf); err != nil {
- t.Fatalf("3rd Read with buffer = %v; want nil", err)
- }
- if r.nread != 2 {
- t.Errorf("num reads = %d; want 2", r.nread)
- }
-}
-
-// Test for golang.org/issue/5947
-func TestWriterReadFromWhileFull(t *testing.T) {
- buf := new(bytes.Buffer)
- w := NewWriterSize(buf, 10)
-
- // Fill buffer exactly.
- n, err := w.Write([]byte("0123456789"))
- if n != 10 || err != nil {
- t.Fatalf("Write returned (%v, %v), want (10, nil)", n, err)
- }
-
- // Use ReadFrom to read in some data.
- n2, err := w.ReadFrom(strings.NewReader("abcdef"))
- if n2 != 6 || err != nil {
- t.Fatalf("ReadFrom returned (%v, %v), want (6, nil)", n2, err)
- }
-}
-
-type emptyThenNonEmptyReader struct {
- r io.Reader
- n int
-}
-
-func (r *emptyThenNonEmptyReader) Read(p []byte) (int, error) {
- if r.n <= 0 {
- return r.r.Read(p)
- }
- r.n--
- return 0, nil
-}
-
-// Test for golang.org/issue/7611
-func TestWriterReadFromUntilEOF(t *testing.T) {
- buf := new(bytes.Buffer)
- w := NewWriterSize(buf, 5)
-
- // Partially fill buffer
- n, err := w.Write([]byte("0123"))
- if n != 4 || err != nil {
- t.Fatalf("Write returned (%v, %v), want (4, nil)", n, err)
- }
-
- // Use ReadFrom to read in some data.
- r := &emptyThenNonEmptyReader{r: strings.NewReader("abcd"), n: 3}
- n2, err := w.ReadFrom(r)
- if n2 != 4 || err != nil {
- t.Fatalf("ReadFrom returned (%v, %v), want (4, nil)", n2, err)
- }
- w.Flush()
- if got, want := string(buf.Bytes()), "0123abcd"; got != want {
- t.Fatalf("buf.Bytes() returned %q, want %q", got, want)
- }
-}
-
-func TestWriterReadFromErrNoProgress(t *testing.T) {
- buf := new(bytes.Buffer)
- w := NewWriterSize(buf, 5)
-
- // Partially fill buffer
- n, err := w.Write([]byte("0123"))
- if n != 4 || err != nil {
- t.Fatalf("Write returned (%v, %v), want (4, nil)", n, err)
- }
-
- // Use ReadFrom to read in some data.
- r := &emptyThenNonEmptyReader{r: strings.NewReader("abcd"), n: 100}
- n2, err := w.ReadFrom(r)
- if n2 != 0 || err != io.ErrNoProgress {
- t.Fatalf("buf.Bytes() returned (%v, %v), want (0, io.ErrNoProgress)", n2, err)
- }
-}
-
-func TestReaderReset(t *testing.T) {
- r := NewReader(strings.NewReader("foo foo"))
- buf := make([]byte, 3)
- r.Read(buf)
- if string(buf) != "foo" {
- t.Errorf("buf = %q; want foo", buf)
- }
- r.Reset(strings.NewReader("bar bar"))
- all, err := ioutil.ReadAll(r)
- if err != nil {
- t.Fatal(err)
- }
- if string(all) != "bar bar" {
- t.Errorf("ReadAll = %q; want bar bar", all)
- }
-}
-
-func TestWriterReset(t *testing.T) {
- var buf1, buf2 bytes.Buffer
- w := NewWriter(&buf1)
- w.WriteString("foo")
- w.Reset(&buf2) // and not flushed
- w.WriteString("bar")
- w.Flush()
- if buf1.String() != "" {
- t.Errorf("buf1 = %q; want empty", buf1.String())
- }
- if buf2.String() != "bar" {
- t.Errorf("buf2 = %q; want bar", buf2.String())
- }
-}
-
-// An onlyReader only implements io.Reader, no matter what other methods the underlying implementation may have.
-type onlyReader struct {
- io.Reader
-}
-
-// An onlyWriter only implements io.Writer, no matter what other methods the underlying implementation may have.
-type onlyWriter struct {
- io.Writer
-}
-
-func BenchmarkReaderCopyOptimal(b *testing.B) {
- // Optimal case is where the underlying reader implements io.WriterTo
- srcBuf := bytes.NewBuffer(make([]byte, 8192))
- src := NewReader(srcBuf)
- dstBuf := new(bytes.Buffer)
- dst := onlyWriter{dstBuf}
- for i := 0; i < b.N; i++ {
- srcBuf.Reset()
- src.Reset(srcBuf)
- dstBuf.Reset()
- io.Copy(dst, src)
- }
-}
-
-func BenchmarkReaderCopyUnoptimal(b *testing.B) {
- // Unoptimal case is where the underlying reader doesn't implement io.WriterTo
- srcBuf := bytes.NewBuffer(make([]byte, 8192))
- src := NewReader(onlyReader{srcBuf})
- dstBuf := new(bytes.Buffer)
- dst := onlyWriter{dstBuf}
- for i := 0; i < b.N; i++ {
- srcBuf.Reset()
- src.Reset(onlyReader{srcBuf})
- dstBuf.Reset()
- io.Copy(dst, src)
- }
-}
-
-func BenchmarkReaderCopyNoWriteTo(b *testing.B) {
- srcBuf := bytes.NewBuffer(make([]byte, 8192))
- srcReader := NewReader(srcBuf)
- src := onlyReader{srcReader}
- dstBuf := new(bytes.Buffer)
- dst := onlyWriter{dstBuf}
- for i := 0; i < b.N; i++ {
- srcBuf.Reset()
- srcReader.Reset(srcBuf)
- dstBuf.Reset()
- io.Copy(dst, src)
- }
-}
-
-func BenchmarkReaderWriteToOptimal(b *testing.B) {
- const bufSize = 16 << 10
- buf := make([]byte, bufSize)
- r := bytes.NewReader(buf)
- srcReader := NewReaderSize(onlyReader{r}, 1<<10)
- if _, ok := ioutil.Discard.(io.ReaderFrom); !ok {
- b.Fatal("ioutil.Discard doesn't support ReaderFrom")
- }
- for i := 0; i < b.N; i++ {
- r.Seek(0, 0)
- srcReader.Reset(onlyReader{r})
- n, err := srcReader.WriteTo(ioutil.Discard)
- if err != nil {
- b.Fatal(err)
- }
- if n != bufSize {
- b.Fatalf("n = %d; want %d", n, bufSize)
- }
- }
-}
-
-func BenchmarkWriterCopyOptimal(b *testing.B) {
- // Optimal case is where the underlying writer implements io.ReaderFrom
- srcBuf := bytes.NewBuffer(make([]byte, 8192))
- src := onlyReader{srcBuf}
- dstBuf := new(bytes.Buffer)
- dst := NewWriter(dstBuf)
- for i := 0; i < b.N; i++ {
- srcBuf.Reset()
- dstBuf.Reset()
- dst.Reset(dstBuf)
- io.Copy(dst, src)
- }
-}
-
-func BenchmarkWriterCopyUnoptimal(b *testing.B) {
- srcBuf := bytes.NewBuffer(make([]byte, 8192))
- src := onlyReader{srcBuf}
- dstBuf := new(bytes.Buffer)
- dst := NewWriter(onlyWriter{dstBuf})
- for i := 0; i < b.N; i++ {
- srcBuf.Reset()
- dstBuf.Reset()
- dst.Reset(onlyWriter{dstBuf})
- io.Copy(dst, src)
- }
-}
-
-func BenchmarkWriterCopyNoReadFrom(b *testing.B) {
- srcBuf := bytes.NewBuffer(make([]byte, 8192))
- src := onlyReader{srcBuf}
- dstBuf := new(bytes.Buffer)
- dstWriter := NewWriter(dstBuf)
- dst := onlyWriter{dstWriter}
- for i := 0; i < b.N; i++ {
- srcBuf.Reset()
- dstBuf.Reset()
- dstWriter.Reset(dstBuf)
- io.Copy(dst, src)
- }
-}
-
-func BenchmarkReaderEmpty(b *testing.B) {
- b.ReportAllocs()
- str := strings.Repeat("x", 16<<10)
- for i := 0; i < b.N; i++ {
- br := NewReader(strings.NewReader(str))
- n, err := io.Copy(ioutil.Discard, br)
- if err != nil {
- b.Fatal(err)
- }
- if n != int64(len(str)) {
- b.Fatal("wrong length")
- }
- }
-}
-
-func BenchmarkWriterEmpty(b *testing.B) {
- b.ReportAllocs()
- str := strings.Repeat("x", 1<<10)
- bs := []byte(str)
- for i := 0; i < b.N; i++ {
- bw := NewWriter(ioutil.Discard)
- bw.Flush()
- bw.WriteByte('a')
- bw.Flush()
- bw.WriteRune('B')
- bw.Flush()
- bw.Write(bs)
- bw.Flush()
- bw.WriteString(str)
- bw.Flush()
- }
-}
-
-func BenchmarkWriterFlush(b *testing.B) {
- b.ReportAllocs()
- bw := NewWriter(ioutil.Discard)
- str := strings.Repeat("x", 50)
- for i := 0; i < b.N; i++ {
- bw.WriteString(str)
- bw.Flush()
- }
-}
generated by cgit v1.2.3-1-g7c22 (git 2.25.1) at 2024-07-02 21:48:57 +0000