pkg/ioutils/bytespipe_test.go
Alexander Morozov 434c274741 Add BytesPipe datastructure to ioutils
Signed-off-by: Alexander Morozov <lk4d4@docker.com>
2015-09-23 16:00:27 -07:00

81 lines
1.7 KiB
Go

package ioutils
import "testing"
func TestBytesPipeRead(t *testing.T) {
buf := NewBytesPipe(nil)
buf.Write([]byte("12"))
buf.Write([]byte("34"))
buf.Write([]byte("56"))
buf.Write([]byte("78"))
buf.Write([]byte("90"))
rd := make([]byte, 4)
n, err := buf.Read(rd)
if err != nil {
t.Fatal(err)
}
if n != 4 {
t.Fatalf("Wrong number of bytes read: %d, should be %d", n, 4)
}
if string(rd) != "1234" {
t.Fatalf("Read %s, but must be %s", rd, "1234")
}
n, err = buf.Read(rd)
if err != nil {
t.Fatal(err)
}
if n != 4 {
t.Fatalf("Wrong number of bytes read: %d, should be %d", n, 4)
}
if string(rd) != "5678" {
t.Fatalf("Read %s, but must be %s", rd, "5679")
}
n, err = buf.Read(rd)
if err != nil {
t.Fatal(err)
}
if n != 2 {
t.Fatalf("Wrong number of bytes read: %d, should be %d", n, 2)
}
if string(rd[:n]) != "90" {
t.Fatalf("Read %s, but must be %s", rd, "90")
}
}
func TestBytesPipeWrite(t *testing.T) {
buf := NewBytesPipe(nil)
buf.Write([]byte("12"))
buf.Write([]byte("34"))
buf.Write([]byte("56"))
buf.Write([]byte("78"))
buf.Write([]byte("90"))
if string(buf.buf) != "1234567890" {
t.Fatalf("Buffer %s, must be %s", buf.buf, "1234567890")
}
}
func BenchmarkBytesPipeWrite(b *testing.B) {
for i := 0; i < b.N; i++ {
buf := NewBytesPipe(nil)
for j := 0; j < 1000; j++ {
buf.Write([]byte("pretty short line, because why not?"))
}
}
}
func BenchmarkBytesPipeRead(b *testing.B) {
rd := make([]byte, 1024)
for i := 0; i < b.N; i++ {
b.StopTimer()
buf := NewBytesPipe(nil)
for j := 0; j < 1000; j++ {
buf.Write(make([]byte, 1024))
}
b.StartTimer()
for j := 0; j < 1000; j++ {
if n, _ := buf.Read(rd); n != 1024 {
b.Fatalf("Wrong number of bytes: %d", n)
}
}
}
}