snapshot of https://github.com/blevesearch/bleve.git (master, 2026-09-15; blobs > 131072B omitted)

analysis/token/unicodenorm/unicodenorm_test.go

@@ -0,0 +1,162 @@
+//  Copyright (c) 2014 Couchbase, Inc.
+//
+// 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 unicodenorm
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/blevesearch/bleve/v2/analysis"
+)
+
+// the following tests come from the lucene
+// test cases for CJK width filter
+// which is our basis for using this
+// as a substitute for that
+func TestUnicodeNormalization(t *testing.T) {
+
+	tests := []struct {
+		formName string
+		input    analysis.TokenStream
+		output   analysis.TokenStream
+	}{
+		{
+			formName: NFKD,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("Ｔｅｓｔ"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("Test"),
+				},
+			},
+		},
+		{
+			formName: NFKD,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("１２３４"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("1234"),
+				},
+			},
+		},
+		{
+			formName: NFKD,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("ｶﾀｶﾅ"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("カタカナ"),
+				},
+			},
+		},
+		{
+			formName: NFKC,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("ｳﾞｨｯﾂ"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("ヴィッツ"),
+				},
+			},
+		},
+		{
+			formName: NFKC,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("ﾊﾟﾅｿﾆｯｸ"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("パナソニック"),
+				},
+			},
+		},
+		{
+			formName: NFD,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\u212B"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\u0041\u030A"),
+				},
+			},
+		},
+		{
+			formName: NFC,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\u212B"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\u00C5"),
+				},
+			},
+		},
+		{
+			formName: NFKD,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\uFB01"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\u0066\u0069"),
+				},
+			},
+		},
+		{
+			formName: NFKC,
+			input: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\uFB01"),
+				},
+			},
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("\u0066\u0069"),
+				},
+			},
+		},
+	}
+
+	for _, test := range tests {
+		filter := MustNewUnicodeNormalizeFilter(test.formName)
+		actual := filter.Filter(test.input)
+		if !reflect.DeepEqual(actual, test.output) {
+			t.Errorf("expected %s, got %s", test.output[0].Term, actual[0].Term)
+			t.Errorf("expected %#v, got %#v", test.output[0].Term, actual[0].Term)
+		}
+	}
+}