go writer_test 源码
golang writer_test 代码
文件路径：/src/net/textproto/writer_test.go
// Copyright 2010 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 textproto
import (
"bufio"
"bytes"
"testing"
)
func TestPrintfLine(t *testing.T) {
var buf bytes.Buffer
w := NewWriter(bufio.NewWriter(&buf))
err := w.PrintfLine("foo %d", 123)
if s := buf.String(); s != "foo 123\r\n" || err != nil {
t.Fatalf("s=%q; err=%s", s, err)
}
}
func TestDotWriter(t *testing.T) {
var buf bytes.Buffer
w := NewWriter(bufio.NewWriter(&buf))
d := w.DotWriter()
n, err := d.Write([]byte("abc\n.def\n..ghi\n.jkl\n."))
if n != 21 || err != nil {
t.Fatalf("Write: %d, %s", n, err)
}
d.Close()
want := "abc\r\n..def\r\n...ghi\r\n..jkl\r\n..\r\n.\r\n"
if s := buf.String(); s != want {
t.Fatalf("wrote %q", s)
}
}
func TestDotWriterCloseEmptyWrite(t *testing.T) {
var buf bytes.Buffer
w := NewWriter(bufio.NewWriter(&buf))
d := w.DotWriter()
n, err := d.Write([]byte{})
if n != 0 || err != nil {
t.Fatalf("Write: %d, %s", n, err)
}
d.Close()
want := "\r\n.\r\n"
if s := buf.String(); s != want {
t.Fatalf("wrote %q; want %q", s, want)
}
}
func TestDotWriterCloseNoWrite(t *testing.T) {
var buf bytes.Buffer
w := NewWriter(bufio.NewWriter(&buf))
d := w.DotWriter()
d.Close()
want := "\r\n.\r\n"
if s := buf.String(); s != want {
t.Fatalf("wrote %q; want %q", s, want)
}
}
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