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// 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 http
import (
"bytes"
"io"
"strings"
"testing"
)
type respWriteTest struct {
Resp Response
Raw string
}
func TestResponseWrite(t *testing.T) {
respWriteTests := []respWriteTest{
// HTTP/1.0, identity coding; no trailer
{
Response{
StatusCode: 503,
ProtoMajor: 1,
ProtoMinor: 0,
Request: dummyReq("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("abcdef")),
ContentLength: 6,
},
"HTTP/1.0 503 Service Unavailable\r\n" +
"Content-Length: 6\r\n\r\n" +
"abcdef",
},
// Unchunked response without Content-Length.
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 0,
Request: dummyReq("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("abcdef")),
ContentLength: -1,
},
"HTTP/1.0 200 OK\r\n" +
"\r\n" +
"abcdef",
},
// HTTP/1.1 response with unknown length and Connection: close
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("abcdef")),
ContentLength: -1,
Close: true,
},
"HTTP/1.1 200 OK\r\n" +
"Connection: close\r\n" +
"\r\n" +
"abcdef",
},
// HTTP/1.1 response with unknown length and not setting connection: close
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq11("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("abcdef")),
ContentLength: -1,
Close: false,
},
"HTTP/1.1 200 OK\r\n" +
"Connection: close\r\n" +
"\r\n" +
"abcdef",
},
// HTTP/1.1 response with unknown length and not setting connection: close, but
// setting chunked.
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq11("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("abcdef")),
ContentLength: -1,
TransferEncoding: []string{"chunked"},
Close: false,
},
"HTTP/1.1 200 OK\r\n" +
"Transfer-Encoding: chunked\r\n\r\n" +
"6\r\nabcdef\r\n0\r\n\r\n",
},
// HTTP/1.1 response 0 content-length, and nil body
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq11("GET"),
Header: Header{},
Body: nil,
ContentLength: 0,
Close: false,
},
"HTTP/1.1 200 OK\r\n" +
"Content-Length: 0\r\n" +
"\r\n",
},
// HTTP/1.1 response 0 content-length, and non-nil empty body
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq11("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("")),
ContentLength: 0,
Close: false,
},
"HTTP/1.1 200 OK\r\n" +
"Content-Length: 0\r\n" +
"\r\n",
},
// HTTP/1.1 response 0 content-length, and non-nil non-empty body
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq11("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("foo")),
ContentLength: 0,
Close: false,
},
"HTTP/1.1 200 OK\r\n" +
"Connection: close\r\n" +
"\r\nfoo",
},
// HTTP/1.1, chunked coding; empty trailer; close
{
Response{
StatusCode: 200,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq("GET"),
Header: Header{},
Body: io.NopCloser(strings.NewReader("abcdef")),
ContentLength: 6,
TransferEncoding: []string{"chunked"},
Close: true,
},
"HTTP/1.1 200 OK\r\n" +
"Connection: close\r\n" +
"Transfer-Encoding: chunked\r\n\r\n" +
"6\r\nabcdef\r\n0\r\n\r\n",
},
// Header value with a newline character (Issue 914).
// Also tests removal of leading and trailing whitespace.
{
Response{
StatusCode: 204,
ProtoMajor: 1,
ProtoMinor: 1,
Request: dummyReq("GET"),
Header: Header{
"Foo": []string{" Bar\nBaz "},
},
Body: nil,
ContentLength: 0,
TransferEncoding: []string{"chunked"},
Close: true,
},
"HTTP/1.1 204 No Content\r\n" +
"Connection: close\r\n" +
"Foo: Bar Baz\r\n" +
"\r\n",
},
// Want a single Content-Length header. Fixing issue 8180 where
// there were two.
{
Response{
StatusCode: StatusOK,
ProtoMajor: 1,
ProtoMinor: 1,
Request: &Request{Method: "POST"},
Header: Header{},
ContentLength: 0,
TransferEncoding: nil,
Body: nil,
},
"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n",
},
// When a response to a POST has Content-Length: -1, make sure we don't
// write the Content-Length as -1.
{
Response{
StatusCode: StatusOK,
ProtoMajor: 1,
ProtoMinor: 1,
Request: &Request{Method: "POST"},
Header: Header{},
ContentLength: -1,
Body: io.NopCloser(strings.NewReader("abcdef")),
},
"HTTP/1.1 200 OK\r\nConnection: close\r\n\r\nabcdef",
},
// Status code under 100 should be zero-padded to
// three digits. Still bogus, but less bogus. (be
// consistent with generating three digits, since the
// Transport requires it)
{
Response{
StatusCode: 7,
Status: "license to violate specs",
ProtoMajor: 1,
ProtoMinor: 0,
Request: dummyReq("GET"),
Header: Header{},
Body: nil,
},
"HTTP/1.0 007 license to violate specs\r\nContent-Length: 0\r\n\r\n",
},
// No stutter. Status code in 1xx range response should
// not include a Content-Length header. See issue #16942.
{
Response{
StatusCode: 123,
Status: "123 Sesame Street",
ProtoMajor: 1,
ProtoMinor: 0,
Request: dummyReq("GET"),
Header: Header{},
Body: nil,
},
"HTTP/1.0 123 Sesame Street\r\n\r\n",
},
// Status code 204 (No content) response should not include a
// Content-Length header. See issue #16942.
{
Response{
StatusCode: 204,
Status: "No Content",
ProtoMajor: 1,
ProtoMinor: 0,
Request: dummyReq("GET"),
Header: Header{},
Body: nil,
},
"HTTP/1.0 204 No Content\r\n\r\n",
},
}
for i := range respWriteTests {
tt := &respWriteTests[i]
var braw bytes.Buffer
err := tt.Resp.Write(&braw)
if err != nil {
t.Errorf("error writing #%d: %s", i, err)
continue
}
sraw := braw.String()
if sraw != tt.Raw {
t.Errorf("Test %d, expecting:\n%q\nGot:\n%q\n", i, tt.Raw, sraw)
continue
}
}
}
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