124 lines
3.1 KiB
Go
124 lines
3.1 KiB
Go
// Copyright (c) 2018 Couchbase, Inc.
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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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package asciifolding
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import (
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"fmt"
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"reflect"
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"testing"
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)
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func TestAsciiFoldingFilter(t *testing.T) {
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tests := []struct {
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input []byte
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output []byte
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}{
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{
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// empty input passes
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input: []byte(``),
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output: []byte(``),
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},
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{
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// no modification for plain ASCII
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input: []byte(`The quick brown fox jumps over the lazy dog`),
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output: []byte(`The quick brown fox jumps over the lazy dog`),
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},
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{
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// Umlauts are folded to plain ASCII
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input: []byte(`The quick bröwn fox jümps over the läzy dog`),
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output: []byte(`The quick brown fox jumps over the lazy dog`),
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},
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{
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// composite unicode runes are folded to more than one ASCII rune
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input: []byte(`ÆꜴ`),
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output: []byte(`AEAO`),
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},
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{
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// apples from https://issues.couchbase.com/browse/MB-33486
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input: []byte(`Ápple Àpple Äpple Âpple Ãpple Åpple`),
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output: []byte(`Apple Apple Apple Apple Apple Apple`),
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},
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{
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// Fix ASCII folding of \u24A2
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input: []byte(`⒢`),
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output: []byte(`(g)`),
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},
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{
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// Test folding of \u2053 (SWUNG DASH)
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input: []byte(`a⁓b`),
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output: []byte(`a~b`),
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},
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{
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// Test folding of \uFF5E (FULLWIDTH TILDE)
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input: []byte(`c～d`),
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output: []byte(`c~d`),
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},
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{
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// Test folding of \uFF3F (FULLWIDTH LOW LINE) - case before tilde
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input: []byte(`e＿f`),
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output: []byte(`e_f`),
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},
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{
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// Test mix including tilde and default fallthrough (using a character not explicitly folded)
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input: []byte(`a⁓b✅c～d`),
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output: []byte(`a~b✅c~d`),
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},
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{
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// Test start of 'A' fallthrough block
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input: []byte(`ÀBC`),
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output: []byte(`ABC`),
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},
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{
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// Test end of 'A' fallthrough block
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input: []byte(`DEFẶ`),
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output: []byte(`DEFA`),
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},
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{
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// Test start of 'AE' fallthrough block
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input: []byte(`Æ`),
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output: []byte(`AE`),
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},
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{
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// Test end of 'AE' fallthrough block
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input: []byte(`ᴁ`),
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output: []byte(`AE`),
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},
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{
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// Test 'DZ' multi-rune output
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input: []byte(`DŽebra`),
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output: []byte(`DZebra`),
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},
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{
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// Test start of 'a' fallthrough block
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input: []byte(`àbc`),
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output: []byte(`abc`),
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},
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{
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// Test end of 'a' fallthrough block
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input: []byte(`defａ`),
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output: []byte(`defa`),
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},
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}
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for _, test := range tests {
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filter := New()
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t.Run(fmt.Sprintf("on %s", test.input), func(t *testing.T) {
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output := filter.Filter(test.input)
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if !reflect.DeepEqual(output, test.output) {
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t.Errorf("\nExpected:\n`%s`\ngot:\n`%s`\n", string(test.output), string(output))
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}
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})
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}
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}
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