1// Copyright 2014 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// Tests of internal functions and things with no better homes.
6
7package http
8
9import (
10	"bytes"
11	"internal/testenv"
12	"net/url"
13	"os/exec"
14	"reflect"
15	"testing"
16)
17
18func TestForeachHeaderElement(t *testing.T) {
19	tests := []struct {
20		in   string
21		want []string
22	}{
23		{"Foo", []string{"Foo"}},
24		{" Foo", []string{"Foo"}},
25		{"Foo ", []string{"Foo"}},
26		{" Foo ", []string{"Foo"}},
27
28		{"foo", []string{"foo"}},
29		{"anY-cAsE", []string{"anY-cAsE"}},
30
31		{"", nil},
32		{",,,,  ,  ,,   ,,, ,", nil},
33
34		{" Foo,Bar, Baz,lower,,Quux ", []string{"Foo", "Bar", "Baz", "lower", "Quux"}},
35	}
36	for _, tt := range tests {
37		var got []string
38		foreachHeaderElement(tt.in, func(v string) {
39			got = append(got, v)
40		})
41		if !reflect.DeepEqual(got, tt.want) {
42			t.Errorf("foreachHeaderElement(%q) = %q; want %q", tt.in, got, tt.want)
43		}
44	}
45}
46
47func TestCleanHost(t *testing.T) {
48	tests := []struct {
49		in, want string
50	}{
51		{"www.google.com", "www.google.com"},
52		{"www.google.com foo", "www.google.com"},
53		{"www.google.com/foo", "www.google.com"},
54		{" first character is a space", ""},
55		{"[1::6]:8080", "[1::6]:8080"},
56
57		// Punycode:
58		{"гофер.рф/foo", "xn--c1ae0ajs.xn--p1ai"},
59		{"bücher.de", "xn--bcher-kva.de"},
60		{"bücher.de:8080", "xn--bcher-kva.de:8080"},
61		// Verify we convert to lowercase before punycode:
62		{"BÜCHER.de", "xn--bcher-kva.de"},
63		{"BÜCHER.de:8080", "xn--bcher-kva.de:8080"},
64		// Verify we normalize to NFC before punycode:
65		{"gophér.nfc", "xn--gophr-esa.nfc"},            // NFC input; no work needed
66		{"goph\u0065\u0301r.nfd", "xn--gophr-esa.nfd"}, // NFD input
67	}
68	for _, tt := range tests {
69		got := cleanHost(tt.in)
70		if tt.want != got {
71			t.Errorf("cleanHost(%q) = %q, want %q", tt.in, got, tt.want)
72		}
73	}
74}
75
76// Test that cmd/go doesn't link in the HTTP server.
77//
78// This catches accidental dependencies between the HTTP transport and
79// server code.
80func TestCmdGoNoHTTPServer(t *testing.T) {
81	t.Parallel()
82	goBin := testenv.GoToolPath(t)
83	out, err := exec.Command(goBin, "tool", "nm", goBin).CombinedOutput()
84	if err != nil {
85		t.Fatalf("go tool nm: %v: %s", err, out)
86	}
87	wantSym := map[string]bool{
88		// Verify these exist: (sanity checking this test)
89		"net/http.(*Client).do":           true,
90		"net/http.(*Transport).RoundTrip": true,
91
92		// Verify these don't exist:
93		"net/http.http2Server":           false,
94		"net/http.(*Server).Serve":       false,
95		"net/http.(*ServeMux).ServeHTTP": false,
96		"net/http.DefaultServeMux":       false,
97	}
98	for sym, want := range wantSym {
99		got := bytes.Contains(out, []byte(sym))
100		if !want && got {
101			t.Errorf("cmd/go unexpectedly links in HTTP server code; found symbol %q in cmd/go", sym)
102		}
103		if want && !got {
104			t.Errorf("expected to find symbol %q in cmd/go; not found", sym)
105		}
106	}
107}
108
109// Tests that the nethttpomithttp2 build tag doesn't rot too much,
110// even if there's not a regular builder on it.
111func TestOmitHTTP2(t *testing.T) {
112	if testing.Short() {
113		t.Skip("skipping in short mode")
114	}
115	t.Parallel()
116	goTool := testenv.GoToolPath(t)
117	out, err := exec.Command(goTool, "test", "-short", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
118	if err != nil {
119		t.Fatalf("go test -short failed: %v, %s", err, out)
120	}
121}
122
123// Tests that the nethttpomithttp2 build tag at least type checks
124// in short mode.
125// The TestOmitHTTP2 test above actually runs tests (in long mode).
126func TestOmitHTTP2Vet(t *testing.T) {
127	t.Parallel()
128	goTool := testenv.GoToolPath(t)
129	out, err := exec.Command(goTool, "vet", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
130	if err != nil {
131		t.Fatalf("go vet failed: %v, %s", err, out)
132	}
133}
134
135var valuesCount int
136
137func BenchmarkCopyValues(b *testing.B) {
138	b.ReportAllocs()
139	src := url.Values{
140		"a": {"1", "2", "3", "4", "5"},
141		"b": {"2", "2", "3", "4", "5"},
142		"c": {"3", "2", "3", "4", "5"},
143		"d": {"4", "2", "3", "4", "5"},
144		"e": {"1", "1", "2", "3", "4", "5", "6", "7", "abcdef", "l", "a", "b", "c", "d", "z"},
145		"j": {"1", "2"},
146		"m": nil,
147	}
148	for i := 0; i < b.N; i++ {
149		dst := url.Values{"a": {"b"}, "b": {"2"}, "c": {"3"}, "d": {"4"}, "j": nil, "m": {"x"}}
150		copyValues(dst, src)
151		if valuesCount = len(dst["a"]); valuesCount != 6 {
152			b.Fatalf(`%d items in dst["a"] but expected 6`, valuesCount)
153		}
154	}
155	if valuesCount == 0 {
156		b.Fatal("Benchmark wasn't run")
157	}
158}
159