35708696fe
In particular, previously such escape handling would break because we would attempt to encode characters >0x7f as runes -- which would then result in escapes that want to encode multi-byte characters breaking. There's still some work necessary in Vis() to make it act sanely when it comes to arbitrary bit streams. Not to mention that we need to figure out what we actually want to do there... Signed-off-by: Aleksa Sarai <asarai@suse.de>
91 lines
2.8 KiB
Go
91 lines
2.8 KiB
Go
/*
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* govis: unicode aware vis(3) encoding implementation
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* Copyright (C) 2017 SUSE LLC.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package govis
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import (
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"bytes"
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"testing"
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)
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const DefaultVisFlags = VisWhite | VisOctal | VisGlob
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func TestVisUnvis(t *testing.T) {
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// Round-trip testing.
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for _, test := range []string{
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"",
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"this.is.a.normal_string",
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"AC_Raíz_Certicámara_S.A..pem",
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"NetLock_Arany_=Class_Gold=_Főtanúsítvány.pem",
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"TÜBİTAK_UEKAE_Kök_Sertifika_Hizmet_Sağlayıcısı_-_Sürüm_3.pem",
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"hello world [ this string needs=enco ding! ]",
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"even \n more encoding necessary\a\a ",
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"\024 <-- some more weird characters --> 你好，世界",
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"\\xff\\n double encoding is also great fun \\x",
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} {
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enc, err := Vis(test, DefaultVisFlags)
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if err != nil {
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t.Errorf("unexpected error doing vis(%q): %s", test, err)
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continue
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}
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dec, err := Unvis(enc, DefaultVisFlags)
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if err != nil {
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t.Errorf("unexpected error doing unvis(%q): %s", enc, err)
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continue
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}
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if dec != test {
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t.Errorf("roundtrip failed: unvis(vis(%q) = %q) = %q", test, enc, dec)
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}
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}
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}
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func TestByteStrings(t *testing.T) {
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// It's important to make sure that we don't mess around with the layout of
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// bytes when doing a round-trip. Otherwise we risk outputting visually
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// identical but bit-stream non-identical strings (causing much confusion
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// when trying to access such files).
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for _, test := range [][]byte{
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[]byte("This is a man in business suit levitating: \U0001f574"),
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{0x7f, 0x17, 0x01, 0x33},
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// TODO: Test arbitrary byte streams like the one below. Currently this
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// fails because Vis() is messing around with it (converting it
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// to a rune and spacing it out).
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//{'\xef', '\xae', 'h', '\077', 'k'},
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} {
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testString := string(test)
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enc, err := Vis(testString, DefaultVisFlags)
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if err != nil {
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t.Errorf("unexpected error doing vis(%q): %s", test, err)
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continue
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}
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dec, err := Unvis(enc, DefaultVisFlags)
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if err != nil {
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t.Errorf("unexpected error doing unvis(%q): %s", enc, err)
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continue
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}
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decBytes := []byte(dec)
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if dec != testString {
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t.Errorf("roundtrip failed [string comparison]: unvis(vis(%q) = %q) = %q", test, enc, dec)
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}
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if !bytes.Equal(decBytes, test) {
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t.Errorf("roundtrip failed [byte comparison]: unvis(vis(%q) = %q) = %q", test, enc, dec)
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}
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}
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}
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