mirror of
https://github.com/rclone/rclone.git
synced 2024-11-28 19:34:55 +01:00
5d6b8141ec
As of Go 1.16, the same functionality is now provided by package io or package os, and those implementations should be preferred in new code.
88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
package readers
|
|
|
|
import (
|
|
"io"
|
|
"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 := io.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 = io.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 := io.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)
|
|
}
|