test: fix benchmark tests names

When using go test tool with different regexp for filtering
test functions, it is sometimes helpful to filter some of them
with any prefix like BenchmarkClientSerial or BenchmarkClientParallel.
This way it is possible to get results just for one type of load.

Follows up #62
Follows up #122

Author: vr009

tarantool_test.go

@@ -136,6 +136,39 @@ func BenchmarkClientSerialTyped(b *testing.B) {
 	}
 }
 
+func BenchmarkClientSerialSQL(b *testing.B) {
+	// Tarantool supports SQL since version 2.0.0
+	isLess, err := test_helpers.IsTarantoolVersionLess(2, 0, 0)
+	if err != nil {
+		b.Fatal("Could not check the Tarantool version")
+	}
+	if isLess {
+		b.Skip()
+	}
+
+	conn, err := Connect(server, opts)
+	if err != nil {
+		b.Errorf("Failed to connect: %s", err)
+		return
+	}
+	defer conn.Close()
+
+	spaceNo := 519
+	_, err = conn.Replace(spaceNo, []interface{}{uint(1111), "hello", "world"})
+	if err != nil {
+		b.Errorf("Failed to replace: %s", err)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		_, err := conn.Execute("SELECT NAME0,NAME1,NAME2 FROM SQL_TEST WHERE NAME0=?", []interface{}{uint(1111)})
+		if err != nil {
+			b.Errorf("Select failed: %s", err.Error())
+			break
+		}
+	}
+}
+
 func BenchmarkClientFuture(b *testing.B) {
 	var err error
 
@@ -398,7 +431,7 @@ func BenchmarkClientLargeSelectParallel(b *testing.B) {
 	})
 }
 
-func BenchmarkSQLParallel(b *testing.B) {
+func BenchmarkClientParallelSQL(b *testing.B) {
 	// Tarantool supports SQL since version 2.0.0
 	isLess, err := test_helpers.IsTarantoolVersionLess(2, 0, 0)
 	if err != nil {