Adding upstream version 2.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

search/facet/facet_builder_terms_test.go

@@ -0,0 +1,72 @@
+//  Copyright (c) 2016 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 facet
+
+import (
+	"os"
+	"regexp"
+	"testing"
+)
+
+var terms []string
+
+func init() {
+	wsRegexp := regexp.MustCompile(`\W+`)
+	input, err := os.ReadFile("benchmark_data.txt")
+	if err != nil {
+		panic(err)
+	}
+	terms = wsRegexp.Split(string(input), -1)
+}
+
+func BenchmarkTermsFacet10(b *testing.B) {
+	termsFacetN(b, 10)
+}
+
+func BenchmarkTermsFacet100(b *testing.B) {
+	termsFacetN(b, 100)
+}
+
+func BenchmarkTermsFacet1000(b *testing.B) {
+	termsFacetN(b, 1000)
+}
+
+func BenchmarkTermsFacet10000(b *testing.B) {
+	termsFacetN(b, 10000)
+}
+
+// func BenchmarkTermsFacet100000(b *testing.B) {
+// 	termsFacetN(b, 100000)
+// }
+
+func termsFacetN(b *testing.B, numTerms int) {
+	field := "test"
+	termsLen := len(terms)
+	tfb := NewTermsFacetBuilder(field, 3)
+	i := 0
+	for len(tfb.termsCount) < numTerms && i <= termsLen {
+		j := i % termsLen
+		term := terms[j]
+		tfb.StartDoc()
+		tfb.UpdateVisitor([]byte(term))
+		tfb.EndDoc()
+		i++
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		tfb.Result()
+	}
+}