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// Copyright 2013 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 html
import (
"strings"
"testing"
)
type unescapeTest struct {
// A short description of the test case.
desc string
// The HTML text.
html string
// The unescaped text.
unescaped string
}
var unescapeTests = []unescapeTest{
// Handle no entities.
{
"copy",
"A\ttext\nstring",
"A\ttext\nstring",
},
// Handle simple named entities.
{
"simple",
"& > <",
"& > <",
},
// Handle hitting the end of the string.
{
"stringEnd",
"& &",
"& &",
},
// Handle entities with two codepoints.
{
"multiCodepoint",
"text ⋛︀ blah",
"text \u22db\ufe00 blah",
},
// Handle decimal numeric entities.
{
"decimalEntity",
"Delta = Δ ",
"Delta = Δ ",
},
// Handle hexadecimal numeric entities.
{
"hexadecimalEntity",
"Lambda = λ = λ ",
"Lambda = λ = λ ",
},
// Handle numeric early termination.
{
"numericEnds",
"&# &#x €43 © = ©f = ©",
"&# &#x €43 © = ©f = ©",
},
// Handle numeric ISO-8859-1 entity replacements.
{
"numericReplacements",
"Footnote‡",
"Footnote‡",
},
// Handle single ampersand.
{
"copySingleAmpersand",
"&",
"&",
},
// Handle ampersand followed by non-entity.
{
"copyAmpersandNonEntity",
"text &test",
"text &test",
},
// Handle "&#".
{
"copyAmpersandHash",
"text &#",
"text &#",
},
}
func TestUnescape(t *testing.T) {
for _, tt := range unescapeTests {
unescaped := UnescapeString(tt.html)
if unescaped != tt.unescaped {
t.Errorf("TestUnescape %s: want %q, got %q", tt.desc, tt.unescaped, unescaped)
}
}
}
func TestUnescapeEscape(t *testing.T) {
ss := []string{
``,
`abc def`,
`a & b`,
`a&b`,
`a & b`,
`"`,
`"`,
`"<&>"`,
`"<&>"`,
`3&5==1 && 0<1, "0<1", a+acute=á`,
`The special characters are: <, >, &, ' and "`,
}
for _, s := range ss {
if got := UnescapeString(EscapeString(s)); got != s {
t.Errorf("got %q want %q", got, s)
}
}
}
var (
benchEscapeData = strings.Repeat("AAAAA < BBBBB > CCCCC & DDDDD ' EEEEE \" ", 100)
benchEscapeNone = strings.Repeat("AAAAA x BBBBB x CCCCC x DDDDD x EEEEE x ", 100)
benchUnescapeSparse = strings.Repeat(strings.Repeat("AAAAA x BBBBB x CCCCC x DDDDD x EEEEE x ", 10)+"&", 10)
benchUnescapeDense = strings.Repeat("&< & <", 100)
)
func BenchmarkEscape(b *testing.B) {
n := 0
for i := 0; i < b.N; i++ {
n += len(EscapeString(benchEscapeData))
}
}
func BenchmarkEscapeNone(b *testing.B) {
n := 0
for i := 0; i < b.N; i++ {
n += len(EscapeString(benchEscapeNone))
}
}
func BenchmarkUnescape(b *testing.B) {
s := EscapeString(benchEscapeData)
n := 0
for i := 0; i < b.N; i++ {
n += len(UnescapeString(s))
}
}
func BenchmarkUnescapeNone(b *testing.B) {
s := EscapeString(benchEscapeNone)
n := 0
for i := 0; i < b.N; i++ {
n += len(UnescapeString(s))
}
}
func BenchmarkUnescapeSparse(b *testing.B) {
n := 0
for i := 0; i < b.N; i++ {
n += len(UnescapeString(benchUnescapeSparse))
}
}
func BenchmarkUnescapeDense(b *testing.B) {
n := 0
for i := 0; i < b.N; i++ {
n += len(UnescapeString(benchUnescapeDense))
}
}