mirror of
https://github.com/rclone/rclone.git
synced 2024-12-23 15:38:57 +01:00
89 lines
1.7 KiB
Go
89 lines
1.7 KiB
Go
package readers
|
|
|
|
import (
|
|
"io"
|
|
"io/ioutil"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestPatternReader(t *testing.T) {
|
|
b2 := make([]byte, 1)
|
|
|
|
r := NewPatternReader(0)
|
|
b, err := ioutil.ReadAll(r)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, []byte{}, b)
|
|
n, err := r.Read(b2)
|
|
require.Equal(t, io.EOF, err)
|
|
require.Equal(t, 0, n)
|
|
|
|
r = NewPatternReader(10)
|
|
b, err = ioutil.ReadAll(r)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, b)
|
|
n, err = r.Read(b2)
|
|
require.Equal(t, io.EOF, err)
|
|
require.Equal(t, 0, n)
|
|
}
|
|
|
|
func TestPatternReaderSeek(t *testing.T) {
|
|
r := NewPatternReader(1024)
|
|
b, err := ioutil.ReadAll(r)
|
|
require.NoError(t, err)
|
|
|
|
for i := range b {
|
|
assert.Equal(t, byte(i%251), b[i])
|
|
}
|
|
|
|
n, err := r.Seek(1, io.SeekStart)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, int64(1), n)
|
|
|
|
// pos 1
|
|
|
|
b2 := make([]byte, 10)
|
|
nn, err := r.Read(b2)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, 10, nn)
|
|
assert.Equal(t, b[1:11], b2)
|
|
|
|
// pos 11
|
|
|
|
n, err = r.Seek(9, io.SeekCurrent)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, int64(20), n)
|
|
|
|
// pos 20
|
|
|
|
nn, err = r.Read(b2)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, 10, nn)
|
|
assert.Equal(t, b[20:30], b2)
|
|
|
|
n, err = r.Seek(-24, io.SeekEnd)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, int64(1000), n)
|
|
|
|
// pos 1000
|
|
|
|
nn, err = r.Read(b2)
|
|
require.NoError(t, err)
|
|
assert.Equal(t, 10, nn)
|
|
assert.Equal(t, b[1000:1010], b2)
|
|
|
|
// Now test errors
|
|
|
|
n, err = r.Seek(1, 400)
|
|
require.Error(t, err)
|
|
assert.Contains(t, err.Error(), "invalid whence")
|
|
assert.Equal(t, int64(0), n)
|
|
|
|
n, err = r.Seek(-1, io.SeekStart)
|
|
require.Error(t, err)
|
|
assert.Contains(t, err.Error(), "negative position")
|
|
assert.Equal(t, int64(0), n)
|
|
}
|