Add a benchmark for the numeric facet builder

search/facets/facet_builder_numeric_test.go

@@ -0,0 +1,49 @@
+package facets
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/blevesearch/bleve/index"
+	nu "github.com/blevesearch/bleve/numeric_util"
+)
+
+var pcodedvalues []nu.PrefixCoded
+
+func init() {
+	pcodedvalues = []nu.PrefixCoded{nu.PrefixCoded{0x20, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, nu.PrefixCoded{0x20, 0x0, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f}, nu.PrefixCoded{0x20, 0x0, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7a, 0x1d, 0xa}, nu.PrefixCoded{0x20, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x16, 0x9, 0x4a, 0x7b}}
+}
+
+func BenchmarkNumericFacet10(b *testing.B) {
+	numericFacetN(b, 10)
+}
+
+func BenchmarkNumericFacet100(b *testing.B) {
+	numericFacetN(b, 100)
+}
+
+func BenchmarkNumericFacet1000(b *testing.B) {
+	numericFacetN(b, 1000)
+}
+
+func numericFacetN(b *testing.B, numTerms int) {
+	field := "test"
+	nfb := NewNumericFacetBuilder(field, numTerms)
+	min, max := 0.0, 9999999998.0
+
+	for i := 0; i <= numTerms; i++ {
+		max++
+		min--
+
+		nfb.AddRange("rangename"+strconv.Itoa(i), &min, &max)
+
+		for _, pv := range pcodedvalues {
+			nfb.Update(index.FieldTerms{field: []string{string(pv)}})
+		}
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		nfb.Result()
+	}
+}