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package s3manager
import (
"bytes"
"io"
"testing"
"github.com/aws/aws-sdk-go/internal/sdkio"
)
func TestBufferedReadSeekerRead(t *testing.T) {
expected := []byte("testData")
readSeeker := NewBufferedReadSeeker(bytes.NewReader(expected), make([]byte, 4))
var (
actual []byte
buffer = make([]byte, 2)
)
for {
n, err := readSeeker.Read(buffer)
actual = append(actual, buffer[:n]...)
if err != nil && err == io.EOF {
break
} else if err != nil {
t.Fatalf("failed to read from reader: %v", err)
}
}
if !bytes.Equal(expected, actual) {
t.Errorf("expected %v, got %v", expected, actual)
}
}
func TestBufferedReadSeekerSeek(t *testing.T) {
content := []byte("testData")
readSeeker := NewBufferedReadSeeker(bytes.NewReader(content), make([]byte, 4))
_, err := readSeeker.Seek(4, sdkio.SeekStart)
if err != nil {
t.Fatalf("failed to seek reader: %v", err)
}
var (
actual []byte
buffer = make([]byte, 4)
)
for {
n, err := readSeeker.Read(buffer)
actual = append(actual, buffer[:n]...)
if err != nil && err == io.EOF {
break
} else if err != nil {
t.Fatalf("failed to read from reader: %v", err)
}
}
if e := []byte("Data"); !bytes.Equal(e, actual) {
t.Errorf("expected %v, got %v", e, actual)
}
}
func TestBufferedReadSeekerReadAt(t *testing.T) {
content := []byte("testData")
readSeeker := NewBufferedReadSeeker(bytes.NewReader(content), make([]byte, 2))
buffer := make([]byte, 4)
_, err := readSeeker.ReadAt(buffer, 0)
if err != nil {
t.Fatalf("failed to seek reader: %v", err)
}
if e := content[:4]; !bytes.Equal(e, buffer) {
t.Errorf("expected %v, got %v", e, buffer)
}
}
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