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/*
* govis: unicode aware vis(3) encoding implementation
* Copyright (C) 2017 SUSE LLC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package govis
import (
"testing"
)
func TestUnvisError(t *testing.T) {
for _, test := range []string{
// Octal escape codes allow you to specify invalid byte values.
"\\777",
"\\420\\322\\455",
"\\652\\233",
} {
got, err := Unvis(test, DefaultVisFlags)
if err == nil {
t.Errorf("expected unvis(%q) to give an error, got %q", test, got)
}
}
}
func TestUnvisCStyleEscape(t *testing.T) {
for _, test := range []struct {
input string
expected string
}{
{"", ""},
{"\\n\\v\\t\\s", "\n\v\t "},
{"\\\\n\\tt", "\\n\tt"},
{"\\b", "\b"},
{"\\r\\b\\n", "\r\b\n"},
{"\\a\\a\\b", "\x07\x07\b"},
{"\\f\\s\\E", "\f \x1b"},
// Hidden markers. They actually aren't generated by vis(3) but for
// some reason, they're supported...
{"test\\\ning", "testing"},
{"test\\$\\$ing", "testing"},
} {
got, err := Unvis(test.input, DefaultVisFlags)
if err != nil {
t.Errorf("unexpected error doing unvis(%q): %q", test.input, err)
continue
}
if got != test.expected {
t.Errorf("expected unvis(%q) = %q, got %q", test.input, test.expected, got)
}
}
}
func TestUnvisMetaEscape(t *testing.T) {
for _, test := range []struct {
input string
expected string
}{
{"", ""},
{"\\M^ ?\\^ ", "\x80?\x00"},
{"\\M- ?\\^?", "\xa0?\x7f"},
{"\\M-x butterfly\\M^?", "\xf8 butterfly\xff"},
{"\\M^X steady-hand \\^& needle", "\x98 steady-hand \x06 needle"},
// TODO: Add some more of these tests, but I need to have some
// secondary source to verify these outputs properly.
} {
got, err := Unvis(test.input, DefaultVisFlags)
if err != nil {
t.Errorf("unexpected error doing unvis(%q): %q", test.input, err)
continue
}
if got != test.expected {
t.Errorf("expected unvis(%q) = %q, got %q", test.input, test.expected, got)
}
}
}
func TestUnvisOctalEscape(t *testing.T) {
for _, test := range []struct {
input string
expected string
}{
{"", ""},
{"\\1", "\001"},
{"\\01\\02\\3", "\001\002\003"},
{"\\001\\023\\32", "\001\023\032"},
{"this is a test\\0k1\\133", "this is a test\000k1\133"},
{"\\170YET\\01another test\\1\\\\82", "\170YET\001another test\001\\82"},
{"\\177MORE tests\\09a", "\177MORE tests\x009a"},
{"\\\\710more\\1215testing", "\\710more\1215testing"},
// Make sure that decoding unicode works properly, when it's been encoded as single bytes.
{"\\360\\237\\225\\264", "\U0001f574"},
{"T\\303\\234B\\304\\260TAK_UEKAE_K\\303\\266k_Sertifika_Hizmet_Sa\\304\\237lay\\304\\261c\\304\\261s\\304\\261_-_S\\303\\274r\\303\\274m_3.pem", "TÜBİTAK_UEKAE_Kök_Sertifika_Hizmet_Sağlayıcısı_-_Sürüm_3.pem"},
// Some invalid characters...
{"\\377\\2\\225\\264", "\xff\x02\x95\xb4"},
} {
got, err := Unvis(test.input, DefaultVisFlags)
if err != nil {
t.Errorf("unexpected error doing unvis(%q): %q", test.input, err)
continue
}
if got != test.expected {
t.Errorf("expected unvis(%q) = %q, got %q", test.input, test.expected, got)
}
}
}
func TestUnvisHexEscape(t *testing.T) {
for _, test := range []struct {
input string
expected string
}{
{"", ""},
{"\\x01", "\x01"},
{"\\x01\\x02\\x7a", "\x01\x02\x7a"},
{"this is a test\\x13\\x52\\x6f", "this is a test\x13\x52\x6f"},
{"\\x170YET\\x01a\\x22nother test\\x11", "\x170YET\x01a\x22nother test\x11"},
{"\\\\x007more\\\\x215testing", "\\x007more\\x215testing"},
// Make sure that decoding unicode works properly, when it's been encoded as single bytes.
{"\\xf0\\x9f\\x95\\xb4", "\U0001f574"},
{"T\\xc3\\x9cB\\xc4\\xb0TAK_UEKAE_K\\xc3\\xb6k_Sertifika_Hizmet_Sa\\xc4\\x9flay\\xc4\\xb1c\\xc4\\xb1s\\xc4\\xb1_-_S\\xc3\\xbcr\\xc3\\xbcm_3.pem", "TÜBİTAK_UEKAE_Kök_Sertifika_Hizmet_Sağlayıcısı_-_Sürüm_3.pem"},
// Some invalid characters...
{"\\xff\\x02\\x95\\xb4", "\xff\x02\x95\xb4"},
} {
got, err := Unvis(test.input, DefaultVisFlags)
if err != nil {
t.Errorf("unexpected error doing unvis(%q): %q", test.input, err)
continue
}
if got != test.expected {
t.Errorf("expected unvis(%q) = %q, got %q", test.input, test.expected, got)
}
}
}
func TestUnvisUnicode(t *testing.T) {
// Ensure that unicode strings are not messed up by Unvis.
for _, test := range []string{
"",
"this.is.a.normal_string",
"AC_Raíz_Certicámara_S.A..pem",
"NetLock_Arany_=Class_Gold=_Főtanúsítvány.pem",
"TÜBİTAK_UEKAE_Kök_Sertifika_Hizmet_Sağlayıcısı_-_Sürüm_3.pem",
} {
got, err := Unvis(test, DefaultVisFlags)
if err != nil {
t.Errorf("unexpected error doing unvis(%q): %s", test, err)
continue
}
if got != test {
t.Errorf("expected %q to be unchanged, got %q", test, got)
}
}
}
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