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// Copyright 2011 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 multipart
import (
"bytes"
"io/ioutil"
"testing"
)
func TestWriter(t *testing.T) {
fileContents := []byte("my file contents")
var b bytes.Buffer
w := NewWriter(&b)
{
part, err := w.CreateFormFile("myfile", "my-file.txt")
if err != nil {
t.Fatalf("CreateFormFile: %v", err)
}
part.Write(fileContents)
err = w.WriteField("key", "val")
if err != nil {
t.Fatalf("WriteField: %v", err)
}
part.Write([]byte("val"))
err = w.Close()
if err != nil {
t.Fatalf("Close: %v", err)
}
s := b.String()
if len(s) == 0 {
t.Fatal("String: unexpected empty result")
}
if s[0] == '\r' || s[0] == '\n' {
t.Fatal("String: unexpected newline")
}
}
r := NewReader(&b, w.Boundary())
part, err := r.NextPart()
if err != nil {
t.Fatalf("part 1: %v", err)
}
if g, e := part.FormName(), "myfile"; g != e {
t.Errorf("part 1: want form name %q, got %q", e, g)
}
slurp, err := ioutil.ReadAll(part)
if err != nil {
t.Fatalf("part 1: ReadAll: %v", err)
}
if e, g := string(fileContents), string(slurp); e != g {
t.Errorf("part 1: want contents %q, got %q", e, g)
}
part, err = r.NextPart()
if err != nil {
t.Fatalf("part 2: %v", err)
}
if g, e := part.FormName(), "key"; g != e {
t.Errorf("part 2: want form name %q, got %q", e, g)
}
slurp, err = ioutil.ReadAll(part)
if err != nil {
t.Fatalf("part 2: ReadAll: %v", err)
}
if e, g := "val", string(slurp); e != g {
t.Errorf("part 2: want contents %q, got %q", e, g)
}
part, err = r.NextPart()
if part != nil || err == nil {
t.Fatalf("expected end of parts; got %v, %v", part, err)
}
}
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