diff --git a/bench_array_test.go b/bench_array_test.go
index 6883bb7..b291c7f 100644
--- a/bench_array_test.go
+++ b/bench_array_test.go
@@ -65,12 +65,12 @@ func BenchmarkIndex(b *testing.B) {
 	var j int
 
 	b.StopTimer()
-	sel := DocB().Root.Find("#main")
+	sel := DocB().Root.Find("#Main")
 	b.StartTimer()
 	for i := 0; i < b.N; i++ {
 		j = sel.Index()
 	}
-	b.Logf("Index=%d\n", j)
+	b.Logf("Index=%d", j)
 }
 
 func BenchmarkIndexSelector(b *testing.B) {
@@ -82,7 +82,7 @@ func BenchmarkIndexSelector(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		j = sel.IndexSelector("dd")
 	}
-	b.Logf("IndexSelector=%d\n", j)
+	b.Logf("IndexSelector=%d", j)
 }
 
 func BenchmarkIndexOfNode(b *testing.B) {
@@ -96,7 +96,7 @@ func BenchmarkIndexOfNode(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		j = sel.IndexOfNode(n)
 	}
-	b.Logf("IndexOfNode=%d\n", j)
+	b.Logf("IndexOfNode=%d", j)
 }
 
 func BenchmarkIndexOfSelection(b *testing.B) {
@@ -108,5 +108,5 @@ func BenchmarkIndexOfSelection(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		j = sel.IndexOfSelection(sel2)
 	}
-	b.Logf("IndexOfSelection=%d\n", j)
+	b.Logf("IndexOfSelection=%d", j)
 }
diff --git a/bench_expand_test.go b/bench_expand_test.go
new file mode 100644
index 0000000..ad63d7e
--- /dev/null
+++ b/bench_expand_test.go
@@ -0,0 +1,72 @@
+package goquery
+
+import (
+	"testing"
+)
+
+func BenchmarkAdd(b *testing.B) {
+	var n int
+
+	b.StopTimer()
+	sel := DocB().Root.Find("dd")
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		if n == 0 {
+			n = sel.Add("h2[title]").Length()
+		} else {
+			sel.Add("h2[title]")
+		}
+	}
+	b.Logf("Add=%d", n)
+}
+
+func BenchmarkAddSelection(b *testing.B) {
+	var n int
+
+	b.StopTimer()
+	sel := DocB().Root.Find("dd")
+	sel2 := DocB().Root.Find("h2[title]")
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		if n == 0 {
+			n = sel.AddSelection(sel2).Length()
+		} else {
+			sel.AddSelection(sel2)
+		}
+	}
+	b.Logf("AddSelection=%d", n)
+}
+
+func BenchmarkAddNodes(b *testing.B) {
+	var n int
+
+	b.StopTimer()
+	sel := DocB().Root.Find("dd")
+	sel2 := DocB().Root.Find("h2[title]")
+	nodes := sel2.Nodes
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		if n == 0 {
+			n = sel.AddNodes(nodes...).Length()
+		} else {
+			sel.AddNodes(nodes...)
+		}
+	}
+	b.Logf("AddNodes=%d", n)
+}
+
+func BenchmarkAndSelf(b *testing.B) {
+	var n int
+
+	b.StopTimer()
+	sel := DocB().Root.Find("dd").Parent()
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		if n == 0 {
+			n = sel.AndSelf().Length()
+		} else {
+			sel.AndSelf()
+		}
+	}
+	b.Logf("AndSelf=%d", n)
+}