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

analysis/tokenizer/regexp/regexp_test.go

@@ -0,0 +1,166 @@
+//  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 regexp
+
+import (
+	"reflect"
+	"regexp"
+	"testing"
+
+	"github.com/blevesearch/bleve/v2/analysis"
+)
+
+func TestBoundary(t *testing.T) {
+
+	wordRegex := regexp.MustCompile(`\p{Han}|\p{Hangul}|\p{Hiragana}|\p{Katakana}|\w+`)
+
+	tests := []struct {
+		input  []byte
+		output analysis.TokenStream
+	}{
+		{
+			[]byte("Hello World."),
+			analysis.TokenStream{
+				{
+					Start:    0,
+					End:      5,
+					Term:     []byte("Hello"),
+					Position: 1,
+					Type:     analysis.AlphaNumeric,
+				},
+				{
+					Start:    6,
+					End:      11,
+					Term:     []byte("World"),
+					Position: 2,
+					Type:     analysis.AlphaNumeric,
+				},
+			},
+		},
+		{
+			[]byte("こんにちは世界"),
+			analysis.TokenStream{
+				{
+					Start:    0,
+					End:      3,
+					Term:     []byte("こ"),
+					Position: 1,
+					Type:     analysis.Ideographic,
+				},
+				{
+					Start:    3,
+					End:      6,
+					Term:     []byte("ん"),
+					Position: 2,
+					Type:     analysis.Ideographic,
+				},
+				{
+					Start:    6,
+					End:      9,
+					Term:     []byte("に"),
+					Position: 3,
+					Type:     analysis.Ideographic,
+				},
+				{
+					Start:    9,
+					End:      12,
+					Term:     []byte("ち"),
+					Position: 4,
+					Type:     analysis.Ideographic,
+				},
+				{
+					Start:    12,
+					End:      15,
+					Term:     []byte("は"),
+					Position: 5,
+					Type:     analysis.Ideographic,
+				},
+				{
+					Start:    15,
+					End:      18,
+					Term:     []byte("世"),
+					Position: 6,
+					Type:     analysis.Ideographic,
+				},
+				{
+					Start:    18,
+					End:      21,
+					Term:     []byte("界"),
+					Position: 7,
+					Type:     analysis.Ideographic,
+				},
+			},
+		},
+		{
+			[]byte(""),
+			analysis.TokenStream{},
+		},
+	}
+
+	for _, test := range tests {
+		tokenizer := NewRegexpTokenizer(wordRegex)
+		actual := tokenizer.Tokenize(test.input)
+
+		if !reflect.DeepEqual(actual, test.output) {
+			t.Errorf("Expected %v, got %v for %s", test.output, actual, string(test.input))
+		}
+	}
+}
+
+func TestBugProducingEmptyTokens(t *testing.T) {
+
+	wordRegex := regexp.MustCompile(`[0-9a-zA-Z_]*`)
+
+	tests := []struct {
+		input  []byte
+		output analysis.TokenStream
+	}{
+		{
+			[]byte("Chatha Edwards Sr."),
+			analysis.TokenStream{
+				{
+					Start:    0,
+					End:      6,
+					Term:     []byte("Chatha"),
+					Position: 1,
+					Type:     analysis.AlphaNumeric,
+				},
+				{
+					Start:    7,
+					End:      14,
+					Term:     []byte("Edwards"),
+					Position: 2,
+					Type:     analysis.AlphaNumeric,
+				},
+				{
+					Start:    15,
+					End:      17,
+					Term:     []byte("Sr"),
+					Position: 3,
+					Type:     analysis.AlphaNumeric,
+				},
+			},
+		},
+	}
+
+	for _, test := range tests {
+		tokenizer := NewRegexpTokenizer(wordRegex)
+		actual := tokenizer.Tokenize(test.input)
+
+		if !reflect.DeepEqual(actual, test.output) {
+			t.Errorf("Expected %v, got %v for %s", test.output, actual, string(test.input))
+		}
+	}
+}