Add benchmark tests

src/cmd/jsondebug/arrayread/read.go

@@ -9,6 +9,10 @@ import (
 )
 
 func main() {
+	readData()
+}
+
+func readData() {
 	f, err := os.Open(common.FileName)
 	if err != nil {
 		fmt.Printf("Error opening input file: %v\n", err)

src/cmd/jsondebug/arrayread/read_test.go

@@ -0,0 +1,9 @@
+package main
+
+import "testing"
+
+func Benchmark_readData(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		readData()
+	}
+}

src/cmd/jsondebug/goread/read.go

@@ -9,6 +9,10 @@ import (
 )
 
 func main() {
+	readData()
+}
+
+func readData() {
 	f, err := os.Open(common.FileName)
 	if err != nil {
 		fmt.Printf("Error opening input file: %v\n", err)

src/cmd/jsondebug/goread/read_test.go

@@ -0,0 +1,9 @@
+package main
+
+import "testing"
+
+func Benchmark_readData(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		readData()
+	}
+}

src/cmd/jsondebug/jsonparser/read.go

@@ -29,13 +29,26 @@ func main() {
 		}
 	}()
 
+	d, err := readFile()
+	if err != nil {
+		return
+	}
+
+	parseData(d)
+}
+
+func readFile() ([]byte, error) {
 	common.PrintMemUsage()
 
 	data, err := ioutil.ReadFile(common.FileName)
 	if err != nil {
 		fmt.Printf("Error reading file: %v\n", err)
-		return
+		return nil, err
 	}
+	return data, nil
+}
+
+func parseData(data []byte) {
 
 	common.PrintMemUsage()
 

src/cmd/jsondebug/jsonparser/read_test.go

@@ -0,0 +1,14 @@
+package main
+
+import "testing"
+
+func Benchmark_parseData(b *testing.B) {
+	d, err := readFile()
+	if err != nil {
+		return
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		parseData(d)
+	}
+}