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// Copyright 2014 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.
// Tests of internal functions and things with no better homes.
package http
import (
"bytes"
"internal/testenv"
"io/fs"
"net/url"
"os"
"os/exec"
"reflect"
"regexp"
"strings"
"testing"
)
func TestForeachHeaderElement(t *testing.T) {
tests := []struct {
in string
want []string
}{
{"Foo", []string{"Foo"}},
{" Foo", []string{"Foo"}},
{"Foo ", []string{"Foo"}},
{" Foo ", []string{"Foo"}},
{"foo", []string{"foo"}},
{"anY-cAsE", []string{"anY-cAsE"}},
{"", nil},
{",,,, , ,, ,,, ,", nil},
{" Foo,Bar, Baz,lower,,Quux ", []string{"Foo", "Bar", "Baz", "lower", "Quux"}},
}
for _, tt := range tests {
var got []string
foreachHeaderElement(tt.in, func(v string) {
got = append(got, v)
})
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("foreachHeaderElement(%q) = %q; want %q", tt.in, got, tt.want)
}
}
}
// Test that cmd/go doesn't link in the HTTP server.
//
// This catches accidental dependencies between the HTTP transport and
// server code.
func TestCmdGoNoHTTPServer(t *testing.T) {
t.Parallel()
goBin := testenv.GoToolPath(t)
out, err := exec.Command(goBin, "tool", "nm", goBin).CombinedOutput()
if err != nil {
t.Fatalf("go tool nm: %v: %s", err, out)
}
wantSym := map[string]bool{
// Verify these exist: (sanity checking this test)
"net/http.(*Client).do": true,
"net/http.(*Transport).RoundTrip": true,
// Verify these don't exist:
"net/http.http2Server": false,
"net/http.(*Server).Serve": false,
"net/http.(*ServeMux).ServeHTTP": false,
"net/http.DefaultServeMux": false,
}
for sym, want := range wantSym {
got := bytes.Contains(out, []byte(sym))
if !want && got {
t.Errorf("cmd/go unexpectedly links in HTTP server code; found symbol %q in cmd/go", sym)
}
if want && !got {
t.Errorf("expected to find symbol %q in cmd/go; not found", sym)
}
}
}
// Tests that the nethttpomithttp2 build tag doesn't rot too much,
// even if there's not a regular builder on it.
func TestOmitHTTP2(t *testing.T) {
if testing.Short() {
t.Skip("skipping in short mode")
}
t.Parallel()
goTool := testenv.GoToolPath(t)
out, err := exec.Command(goTool, "test", "-short", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
if err != nil {
t.Fatalf("go test -short failed: %v, %s", err, out)
}
}
// Tests that the nethttpomithttp2 build tag at least type checks
// in short mode.
// The TestOmitHTTP2 test above actually runs tests (in long mode).
func TestOmitHTTP2Vet(t *testing.T) {
t.Parallel()
goTool := testenv.GoToolPath(t)
out, err := exec.Command(goTool, "vet", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
if err != nil {
t.Fatalf("go vet failed: %v, %s", err, out)
}
}
var valuesCount int
func BenchmarkCopyValues(b *testing.B) {
b.ReportAllocs()
src := url.Values{
"a": {"1", "2", "3", "4", "5"},
"b": {"2", "2", "3", "4", "5"},
"c": {"3", "2", "3", "4", "5"},
"d": {"4", "2", "3", "4", "5"},
"e": {"1", "1", "2", "3", "4", "5", "6", "7", "abcdef", "l", "a", "b", "c", "d", "z"},
"j": {"1", "2"},
"m": nil,
}
for i := 0; i < b.N; i++ {
dst := url.Values{"a": {"b"}, "b": {"2"}, "c": {"3"}, "d": {"4"}, "j": nil, "m": {"x"}}
copyValues(dst, src)
if valuesCount = len(dst["a"]); valuesCount != 6 {
b.Fatalf(`%d items in dst["a"] but expected 6`, valuesCount)
}
}
if valuesCount == 0 {
b.Fatal("Benchmark wasn't run")
}
}
var forbiddenStringsFunctions = map[string]bool{
// Functions that use Unicode-aware case folding.
"EqualFold": true,
"Title": true,
"ToLower": true,
"ToLowerSpecial": true,
"ToTitle": true,
"ToTitleSpecial": true,
"ToUpper": true,
"ToUpperSpecial": true,
// Functions that use Unicode-aware spaces.
"Fields": true,
"TrimSpace": true,
}
// TestNoUnicodeStrings checks that nothing in net/http uses the Unicode-aware
// strings and bytes package functions. HTTP is mostly ASCII based, and doing
// Unicode-aware case folding or space stripping can introduce vulnerabilities.
func TestNoUnicodeStrings(t *testing.T) {
if !testenv.HasSrc() {
t.Skip("source code not available")
}
re := regexp.MustCompile(`(strings|bytes).([A-Za-z]+)`)
if err := fs.WalkDir(os.DirFS("."), ".", func(path string, d fs.DirEntry, err error) error {
if err != nil {
t.Fatal(err)
}
if path == "internal/ascii" {
return fs.SkipDir
}
if !strings.HasSuffix(path, ".go") ||
strings.HasSuffix(path, "_test.go") ||
path == "h2_bundle.go" || d.IsDir() {
return nil
}
contents, err := os.ReadFile(path)
if err != nil {
t.Fatal(err)
}
for lineNum, line := range strings.Split(string(contents), "\n") {
for _, match := range re.FindAllStringSubmatch(line, -1) {
if !forbiddenStringsFunctions[match[2]] {
continue
}
t.Errorf("disallowed call to %s at %s:%d", match[0], path, lineNum+1)
}
}
return nil
}); err != nil {
t.Fatal(err)
}
}
const redirectURL = "/thisaredirect细雪withasciilettersのけぶabcdefghijk.html"
func BenchmarkHexEscapeNonASCII(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
hexEscapeNonASCII(redirectURL)
}
}
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