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.
725 lines
18 KiB
Go
725 lines
18 KiB
Go
package vfs
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"os"
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"testing"
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"time"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fs/operations"
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"github.com/rclone/rclone/fstest"
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"github.com/rclone/rclone/vfs/vfscommon"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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// Check interfaces
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var (
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_ io.Reader = (*RWFileHandle)(nil)
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_ io.ReaderAt = (*RWFileHandle)(nil)
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_ io.Writer = (*RWFileHandle)(nil)
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_ io.WriterAt = (*RWFileHandle)(nil)
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_ io.Seeker = (*RWFileHandle)(nil)
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_ io.Closer = (*RWFileHandle)(nil)
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_ Handle = (*RWFileHandle)(nil)
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)
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// Create a file and open it with the flags passed in
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func rwHandleCreateFlags(t *testing.T, create bool, filename string, flags int) (r *fstest.Run, vfs *VFS, fh *RWFileHandle, cleanup func()) {
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opt := vfscommon.DefaultOpt
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opt.CacheMode = vfscommon.CacheModeFull
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opt.WriteBack = writeBackDelay
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r, vfs, cleanup = newTestVFSOpt(t, &opt)
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if create {
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file1 := r.WriteObject(context.Background(), filename, "0123456789abcdef", t1)
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r.CheckRemoteItems(t, file1)
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}
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h, err := vfs.OpenFile(filename, flags, 0777)
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require.NoError(t, err)
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fh, ok := h.(*RWFileHandle)
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require.True(t, ok)
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return r, vfs, fh, cleanup
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}
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// Open a file for read
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func rwHandleCreateReadOnly(t *testing.T) (r *fstest.Run, vfs *VFS, fh *RWFileHandle, cleanup func()) {
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return rwHandleCreateFlags(t, true, "dir/file1", os.O_RDONLY)
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}
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// Open a file for write
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func rwHandleCreateWriteOnly(t *testing.T) (r *fstest.Run, vfs *VFS, fh *RWFileHandle, cleanup func()) {
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return rwHandleCreateFlags(t, false, "file1", os.O_WRONLY|os.O_CREATE)
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}
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// read data from the string
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func rwReadString(t *testing.T, fh *RWFileHandle, n int) string {
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buf := make([]byte, n)
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n, err := fh.Read(buf)
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if err != io.EOF {
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assert.NoError(t, err)
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}
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return string(buf[:n])
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}
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func TestRWFileHandleMethodsRead(t *testing.T) {
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_, _, fh, cleanup := rwHandleCreateReadOnly(t)
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defer cleanup()
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// String
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assert.Equal(t, "dir/file1 (rw)", fh.String())
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assert.Equal(t, "<nil *RWFileHandle>", (*RWFileHandle)(nil).String())
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assert.Equal(t, "<nil *RWFileHandle.file>", new(RWFileHandle).String())
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// Node
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node := fh.Node()
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assert.Equal(t, "file1", node.Name())
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// Size
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assert.Equal(t, int64(16), fh.Size())
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// Read 1
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assert.Equal(t, "0", rwReadString(t, fh, 1))
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// Read remainder
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assert.Equal(t, "123456789abcdef", rwReadString(t, fh, 256))
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// Read EOF
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buf := make([]byte, 16)
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_, err := fh.Read(buf)
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assert.Equal(t, io.EOF, err)
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// Sync
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err = fh.Sync()
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assert.NoError(t, err)
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// Stat
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var fi os.FileInfo
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fi, err = fh.Stat()
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assert.NoError(t, err)
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assert.Equal(t, int64(16), fi.Size())
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assert.Equal(t, "file1", fi.Name())
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// Close
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assert.False(t, fh.closed)
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assert.Equal(t, nil, fh.Close())
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assert.True(t, fh.closed)
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// Close again
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assert.Equal(t, ECLOSED, fh.Close())
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}
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func TestRWFileHandleSeek(t *testing.T) {
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_, _, fh, cleanup := rwHandleCreateReadOnly(t)
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defer cleanup()
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assert.Equal(t, fh.opened, false)
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// Check null seeks don't open the file
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n, err := fh.Seek(0, io.SeekStart)
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assert.NoError(t, err)
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assert.Equal(t, int64(0), n)
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assert.Equal(t, fh.opened, false)
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n, err = fh.Seek(0, io.SeekCurrent)
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assert.NoError(t, err)
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assert.Equal(t, int64(0), n)
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assert.Equal(t, fh.opened, false)
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assert.Equal(t, "0", rwReadString(t, fh, 1))
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// 0 means relative to the origin of the file,
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n, err = fh.Seek(5, io.SeekStart)
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assert.NoError(t, err)
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assert.Equal(t, int64(5), n)
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assert.Equal(t, "5", rwReadString(t, fh, 1))
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// 1 means relative to the current offset
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n, err = fh.Seek(-3, io.SeekCurrent)
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assert.NoError(t, err)
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assert.Equal(t, int64(3), n)
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assert.Equal(t, "3", rwReadString(t, fh, 1))
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// 2 means relative to the end.
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n, err = fh.Seek(-3, io.SeekEnd)
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assert.NoError(t, err)
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assert.Equal(t, int64(13), n)
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assert.Equal(t, "d", rwReadString(t, fh, 1))
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// Seek off the end
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_, err = fh.Seek(100, io.SeekStart)
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assert.NoError(t, err)
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// Get the error on read
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buf := make([]byte, 16)
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l, err := fh.Read(buf)
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assert.Equal(t, io.EOF, err)
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assert.Equal(t, 0, l)
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// Close
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assert.Equal(t, nil, fh.Close())
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}
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func TestRWFileHandleReadAt(t *testing.T) {
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_, _, fh, cleanup := rwHandleCreateReadOnly(t)
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defer cleanup()
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// read from start
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buf := make([]byte, 1)
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n, err := fh.ReadAt(buf, 0)
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require.NoError(t, err)
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assert.Equal(t, 1, n)
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assert.Equal(t, "0", string(buf[:n]))
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// seek forwards
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n, err = fh.ReadAt(buf, 5)
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require.NoError(t, err)
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assert.Equal(t, 1, n)
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assert.Equal(t, "5", string(buf[:n]))
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// seek backwards
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n, err = fh.ReadAt(buf, 1)
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require.NoError(t, err)
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assert.Equal(t, 1, n)
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assert.Equal(t, "1", string(buf[:n]))
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// read exactly to the end
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buf = make([]byte, 6)
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n, err = fh.ReadAt(buf, 10)
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require.NoError(t, err)
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assert.Equal(t, 6, n)
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assert.Equal(t, "abcdef", string(buf[:n]))
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// read off the end
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buf = make([]byte, 256)
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n, err = fh.ReadAt(buf, 10)
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assert.Equal(t, io.EOF, err)
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assert.Equal(t, 6, n)
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assert.Equal(t, "abcdef", string(buf[:n]))
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// read starting off the end
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n, err = fh.ReadAt(buf, 100)
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assert.Equal(t, io.EOF, err)
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assert.Equal(t, 0, n)
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// Properly close the file
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assert.NoError(t, fh.Close())
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// check reading on closed file
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_, err = fh.ReadAt(buf, 100)
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assert.Equal(t, ECLOSED, err)
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}
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func TestRWFileHandleFlushRead(t *testing.T) {
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_, _, fh, cleanup := rwHandleCreateReadOnly(t)
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defer cleanup()
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// Check Flush does nothing if read not called
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err := fh.Flush()
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assert.NoError(t, err)
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assert.False(t, fh.closed)
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// Read data
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buf := make([]byte, 256)
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n, err := fh.Read(buf)
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assert.True(t, err == io.EOF || err == nil)
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assert.Equal(t, 16, n)
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// Check Flush does nothing if read called
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err = fh.Flush()
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assert.NoError(t, err)
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assert.False(t, fh.closed)
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// Check flush does nothing if called again
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err = fh.Flush()
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assert.NoError(t, err)
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assert.False(t, fh.closed)
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// Properly close the file
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assert.NoError(t, fh.Close())
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}
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func TestRWFileHandleReleaseRead(t *testing.T) {
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_, _, fh, cleanup := rwHandleCreateReadOnly(t)
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defer cleanup()
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// Read data
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buf := make([]byte, 256)
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n, err := fh.Read(buf)
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assert.True(t, err == io.EOF || err == nil)
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assert.Equal(t, 16, n)
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// Check Release closes file
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err = fh.Release()
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assert.NoError(t, err)
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assert.True(t, fh.closed)
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// Check Release does nothing if called again
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err = fh.Release()
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assert.NoError(t, err)
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assert.True(t, fh.closed)
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}
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/// ------------------------------------------------------------
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func TestRWFileHandleMethodsWrite(t *testing.T) {
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r, vfs, fh, cleanup := rwHandleCreateWriteOnly(t)
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defer cleanup()
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// String
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assert.Equal(t, "file1 (rw)", fh.String())
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assert.Equal(t, "<nil *RWFileHandle>", (*RWFileHandle)(nil).String())
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assert.Equal(t, "<nil *RWFileHandle.file>", new(RWFileHandle).String())
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// Node
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node := fh.Node()
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assert.Equal(t, "file1", node.Name())
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offset := func() int64 {
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n, err := fh.Seek(0, io.SeekCurrent)
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require.NoError(t, err)
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return n
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}
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// Offset #1
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assert.Equal(t, int64(0), offset())
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assert.Equal(t, int64(0), node.Size())
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// Size #1
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assert.Equal(t, int64(0), fh.Size())
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// Write
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n, err := fh.Write([]byte("hello"))
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assert.NoError(t, err)
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assert.Equal(t, 5, n)
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// Offset #2
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assert.Equal(t, int64(5), offset())
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assert.Equal(t, int64(5), node.Size())
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// Size #2
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assert.Equal(t, int64(5), fh.Size())
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// WriteString
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n, err = fh.WriteString(" world!")
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assert.NoError(t, err)
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assert.Equal(t, 7, n)
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// Sync
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err = fh.Sync()
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assert.NoError(t, err)
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// Stat
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var fi os.FileInfo
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fi, err = fh.Stat()
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assert.NoError(t, err)
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assert.Equal(t, int64(12), fi.Size())
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assert.Equal(t, "file1", fi.Name())
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// Truncate
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err = fh.Truncate(11)
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assert.NoError(t, err)
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// Close
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assert.NoError(t, fh.Close())
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// Check double close
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err = fh.Close()
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assert.Equal(t, ECLOSED, err)
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// check vfs
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root, err := vfs.Root()
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require.NoError(t, err)
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checkListing(t, root, []string{"file1,11,false"})
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// check the underlying r.Fremote but not the modtime
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file1 := fstest.NewItem("file1", "hello world", t1)
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vfs.WaitForWriters(waitForWritersDelay)
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fstest.CheckListingWithPrecision(t, r.Fremote, []fstest.Item{file1}, []string{}, fs.ModTimeNotSupported)
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}
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func TestRWFileHandleWriteAt(t *testing.T) {
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r, vfs, fh, cleanup := rwHandleCreateWriteOnly(t)
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defer cleanup()
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offset := func() int64 {
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n, err := fh.Seek(0, io.SeekCurrent)
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require.NoError(t, err)
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return n
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}
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// Preconditions
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assert.Equal(t, int64(0), offset())
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assert.True(t, fh.opened)
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assert.False(t, fh.writeCalled)
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// Write the data
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n, err := fh.WriteAt([]byte("hello**"), 0)
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assert.NoError(t, err)
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assert.Equal(t, 7, n)
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// After write
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assert.Equal(t, int64(0), offset())
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assert.True(t, fh.writeCalled)
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// Write more data
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n, err = fh.WriteAt([]byte(" world"), 5)
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assert.NoError(t, err)
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assert.Equal(t, 6, n)
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// Close
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assert.NoError(t, fh.Close())
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// Check can't write on closed handle
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n, err = fh.WriteAt([]byte("hello"), 0)
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assert.Equal(t, ECLOSED, err)
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assert.Equal(t, 0, n)
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// check vfs
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root, err := vfs.Root()
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require.NoError(t, err)
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checkListing(t, root, []string{"file1,11,false"})
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// check the underlying r.Fremote but not the modtime
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file1 := fstest.NewItem("file1", "hello world", t1)
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vfs.WaitForWriters(waitForWritersDelay)
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fstest.CheckListingWithPrecision(t, r.Fremote, []fstest.Item{file1}, []string{}, fs.ModTimeNotSupported)
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}
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func TestRWFileHandleWriteNoWrite(t *testing.T) {
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r, vfs, fh, cleanup := rwHandleCreateWriteOnly(t)
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defer cleanup()
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// Close the file without writing to it
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err := fh.Close()
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if errors.Is(err, fs.ErrorCantUploadEmptyFiles) {
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t.Logf("skipping test: %v", err)
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return
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}
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assert.NoError(t, err)
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// Create a different file (not in the cache)
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h, err := vfs.OpenFile("file2", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0777)
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require.NoError(t, err)
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// Close it with Flush and Release
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err = h.Flush()
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assert.NoError(t, err)
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err = h.Release()
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assert.NoError(t, err)
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// check vfs
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root, err := vfs.Root()
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require.NoError(t, err)
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checkListing(t, root, []string{"file1,0,false", "file2,0,false"})
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// check the underlying r.Fremote but not the modtime
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file1 := fstest.NewItem("file1", "", t1)
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file2 := fstest.NewItem("file2", "", t1)
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vfs.WaitForWriters(waitForWritersDelay)
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fstest.CheckListingWithPrecision(t, r.Fremote, []fstest.Item{file1, file2}, []string{}, fs.ModTimeNotSupported)
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}
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func TestRWFileHandleFlushWrite(t *testing.T) {
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_, _, fh, cleanup := rwHandleCreateWriteOnly(t)
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defer cleanup()
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// Check that the file has been create and is open
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assert.True(t, fh.opened)
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// Write some data
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n, err := fh.Write([]byte("hello"))
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assert.NoError(t, err)
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assert.Equal(t, 5, n)
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assert.True(t, fh.opened)
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// Check Flush does not close file if write called
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err = fh.Flush()
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assert.NoError(t, err)
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assert.False(t, fh.closed)
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// Check flush does nothing if called again
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err = fh.Flush()
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assert.NoError(t, err)
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assert.False(t, fh.closed)
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// Check that Close closes the file
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err = fh.Close()
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assert.NoError(t, err)
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assert.True(t, fh.closed)
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}
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func TestRWFileHandleReleaseWrite(t *testing.T) {
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_, _, fh, cleanup := rwHandleCreateWriteOnly(t)
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defer cleanup()
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// Write some data
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n, err := fh.Write([]byte("hello"))
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assert.NoError(t, err)
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assert.Equal(t, 5, n)
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// Check Release closes file
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err = fh.Release()
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assert.NoError(t, err)
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assert.True(t, fh.closed)
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// Check Release does nothing if called again
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err = fh.Release()
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assert.NoError(t, err)
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assert.True(t, fh.closed)
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}
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// check the size of the file through the open file (if not nil) and via stat
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func assertSize(t *testing.T, vfs *VFS, fh *RWFileHandle, filepath string, size int64) {
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if fh != nil {
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assert.Equal(t, size, fh.Size())
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}
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fi, err := vfs.Stat(filepath)
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require.NoError(t, err)
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assert.Equal(t, size, fi.Size())
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}
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func TestRWFileHandleSizeTruncateExisting(t *testing.T) {
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_, vfs, fh, cleanup := rwHandleCreateFlags(t, true, "dir/file1", os.O_WRONLY|os.O_TRUNC)
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defer cleanup()
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// check initial size after opening
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assertSize(t, vfs, fh, "dir/file1", 0)
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// write some bytes
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n, err := fh.Write([]byte("hello"))
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assert.NoError(t, err)
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assert.Equal(t, 5, n)
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// check size after writing
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assertSize(t, vfs, fh, "dir/file1", 5)
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// close
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assert.NoError(t, fh.Close())
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// check size after close
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assertSize(t, vfs, nil, "dir/file1", 5)
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}
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func TestRWFileHandleSizeCreateExisting(t *testing.T) {
|
|
_, vfs, fh, cleanup := rwHandleCreateFlags(t, true, "dir/file1", os.O_WRONLY|os.O_CREATE)
|
|
defer cleanup()
|
|
|
|
// check initial size after opening
|
|
assertSize(t, vfs, fh, "dir/file1", 16)
|
|
|
|
// write some bytes
|
|
n, err := fh.Write([]byte("hello"))
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 5, n)
|
|
|
|
// check size after writing
|
|
assertSize(t, vfs, fh, "dir/file1", 16)
|
|
|
|
// write some more bytes
|
|
n, err = fh.Write([]byte("helloHELLOhello"))
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 15, n)
|
|
|
|
// check size after writing
|
|
assertSize(t, vfs, fh, "dir/file1", 20)
|
|
|
|
// close
|
|
assert.NoError(t, fh.Close())
|
|
|
|
// check size after close
|
|
assertSize(t, vfs, nil, "dir/file1", 20)
|
|
}
|
|
|
|
func TestRWFileHandleSizeCreateNew(t *testing.T) {
|
|
_, vfs, fh, cleanup := rwHandleCreateFlags(t, false, "file1", os.O_WRONLY|os.O_CREATE)
|
|
defer cleanup()
|
|
|
|
// check initial size after opening
|
|
assertSize(t, vfs, fh, "file1", 0)
|
|
|
|
// write some bytes
|
|
n, err := fh.Write([]byte("hello"))
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, 5, n)
|
|
|
|
// check size after writing
|
|
assertSize(t, vfs, fh, "file1", 5)
|
|
|
|
// check size after writing
|
|
assertSize(t, vfs, fh, "file1", 5)
|
|
|
|
// close
|
|
assert.NoError(t, fh.Close())
|
|
|
|
// check size after close
|
|
assertSize(t, vfs, nil, "file1", 5)
|
|
}
|
|
|
|
func testRWFileHandleOpenTest(t *testing.T, vfs *VFS, test *openTest) {
|
|
fileName := "open-test-file"
|
|
|
|
// Make sure we delete the file on failure too
|
|
defer func() {
|
|
_ = vfs.Remove(fileName)
|
|
}()
|
|
|
|
// first try with file not existing
|
|
_, err := vfs.Stat(fileName)
|
|
require.True(t, os.IsNotExist(err))
|
|
|
|
f, openNonExistentErr := vfs.OpenFile(fileName, test.flags, 0666)
|
|
|
|
var readNonExistentErr error
|
|
var writeNonExistentErr error
|
|
if openNonExistentErr == nil {
|
|
// read some bytes
|
|
buf := []byte{0, 0}
|
|
_, readNonExistentErr = f.Read(buf)
|
|
|
|
// write some bytes
|
|
_, writeNonExistentErr = f.Write([]byte("hello"))
|
|
|
|
// close
|
|
err = f.Close()
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
// write the file
|
|
f, err = vfs.OpenFile(fileName, os.O_WRONLY|os.O_CREATE, 0777)
|
|
require.NoError(t, err)
|
|
_, err = f.Write([]byte("hello"))
|
|
require.NoError(t, err)
|
|
err = f.Close()
|
|
require.NoError(t, err)
|
|
|
|
// then open file and try with file existing
|
|
|
|
f, openExistingErr := vfs.OpenFile(fileName, test.flags, 0666)
|
|
var readExistingErr error
|
|
var writeExistingErr error
|
|
if openExistingErr == nil {
|
|
// read some bytes
|
|
buf := []byte{0, 0}
|
|
_, readExistingErr = f.Read(buf)
|
|
|
|
// write some bytes
|
|
_, writeExistingErr = f.Write([]byte("HEL"))
|
|
|
|
// close
|
|
err = f.Close()
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
// read the file
|
|
f, err = vfs.OpenFile(fileName, os.O_RDONLY, 0)
|
|
require.NoError(t, err)
|
|
buf, err := io.ReadAll(f)
|
|
require.NoError(t, err)
|
|
err = f.Close()
|
|
require.NoError(t, err)
|
|
contents := string(buf)
|
|
|
|
// remove file
|
|
node, err := vfs.Stat(fileName)
|
|
require.NoError(t, err)
|
|
err = node.Remove()
|
|
require.NoError(t, err)
|
|
|
|
// check
|
|
assert.Equal(t, test.openNonExistentErr, openNonExistentErr, "openNonExistentErr: want=%v, got=%v", test.openNonExistentErr, openNonExistentErr)
|
|
assert.Equal(t, test.readNonExistentErr, readNonExistentErr, "readNonExistentErr: want=%v, got=%v", test.readNonExistentErr, readNonExistentErr)
|
|
assert.Equal(t, test.writeNonExistentErr, writeNonExistentErr, "writeNonExistentErr: want=%v, got=%v", test.writeNonExistentErr, writeNonExistentErr)
|
|
assert.Equal(t, test.openExistingErr, openExistingErr, "openExistingErr: want=%v, got=%v", test.openExistingErr, openExistingErr)
|
|
assert.Equal(t, test.readExistingErr, readExistingErr, "readExistingErr: want=%v, got=%v", test.readExistingErr, readExistingErr)
|
|
assert.Equal(t, test.writeExistingErr, writeExistingErr, "writeExistingErr: want=%v, got=%v", test.writeExistingErr, writeExistingErr)
|
|
assert.Equal(t, test.contents, contents)
|
|
}
|
|
|
|
func TestRWFileHandleOpenTests(t *testing.T) {
|
|
opt := vfscommon.DefaultOpt
|
|
opt.CacheMode = vfscommon.CacheModeFull
|
|
opt.WriteBack = writeBackDelay
|
|
_, vfs, cleanup := newTestVFSOpt(t, &opt)
|
|
defer cleanup()
|
|
|
|
for _, test := range openTests {
|
|
t.Run(test.what, func(t *testing.T) {
|
|
testRWFileHandleOpenTest(t, vfs, &test)
|
|
})
|
|
}
|
|
}
|
|
|
|
// tests mod time on open files
|
|
func TestRWFileModTimeWithOpenWriters(t *testing.T) {
|
|
r, vfs, fh, cleanup := rwHandleCreateWriteOnly(t)
|
|
defer cleanup()
|
|
if !canSetModTime(t, r) {
|
|
t.Skip("can't set mod time")
|
|
}
|
|
|
|
mtime := time.Date(2012, time.November, 18, 17, 32, 31, 0, time.UTC)
|
|
|
|
_, err := fh.Write([]byte{104, 105})
|
|
require.NoError(t, err)
|
|
|
|
err = fh.Node().SetModTime(mtime)
|
|
require.NoError(t, err)
|
|
|
|
// Using Flush/Release to mimic mount instead of Close
|
|
|
|
err = fh.Flush()
|
|
require.NoError(t, err)
|
|
|
|
err = fh.Release()
|
|
require.NoError(t, err)
|
|
|
|
info, err := vfs.Stat("file1")
|
|
require.NoError(t, err)
|
|
|
|
if r.Fremote.Precision() != fs.ModTimeNotSupported {
|
|
// avoid errors because of timezone differences
|
|
assert.Equal(t, info.ModTime().Unix(), mtime.Unix(), fmt.Sprintf("Time mismatch: %v != %v", info.ModTime(), mtime))
|
|
}
|
|
|
|
file1 := fstest.NewItem("file1", "hi", mtime)
|
|
vfs.WaitForWriters(waitForWritersDelay)
|
|
r.CheckRemoteItems(t, file1)
|
|
}
|
|
|
|
func TestRWCacheRename(t *testing.T) {
|
|
opt := vfscommon.DefaultOpt
|
|
opt.CacheMode = vfscommon.CacheModeFull
|
|
opt.WriteBack = writeBackDelay
|
|
r, vfs, cleanup := newTestVFSOpt(t, &opt)
|
|
defer cleanup()
|
|
|
|
if !operations.CanServerSideMove(r.Fremote) {
|
|
t.Skip("skip as can't rename files")
|
|
}
|
|
|
|
h, err := vfs.OpenFile("rename_me", os.O_WRONLY|os.O_CREATE, 0777)
|
|
require.NoError(t, err)
|
|
_, err = h.WriteString("hello")
|
|
require.NoError(t, err)
|
|
fh, ok := h.(*RWFileHandle)
|
|
require.True(t, ok)
|
|
|
|
err = fh.Sync()
|
|
require.NoError(t, err)
|
|
err = fh.Close()
|
|
require.NoError(t, err)
|
|
|
|
assert.True(t, vfs.cache.Exists("rename_me"))
|
|
|
|
err = vfs.Rename("rename_me", "i_was_renamed")
|
|
require.NoError(t, err)
|
|
|
|
assert.False(t, vfs.cache.Exists("rename_me"))
|
|
assert.True(t, vfs.cache.Exists("i_was_renamed"))
|
|
}
|