rclone/vfs/vfstest/write_unix.go
Nick Craig-Wood fd39cbc193 vfstests: move functional tests from mountlib and make them work with VFS
The tests are now run for the mount commands and for the plain VFS.

This makes the tests much easier to debug when running with a VFS than
through a mount.
2020-04-20 10:42:33 +01:00

69 lines
1.5 KiB
Go

// +build linux darwin freebsd
package vfstest
import (
"runtime"
"testing"
"github.com/stretchr/testify/assert"
"golang.org/x/sys/unix"
"github.com/rclone/rclone/vfs"
)
// TestWriteFileDoubleClose tests double close on write
func TestWriteFileDoubleClose(t *testing.T) {
run.skipIfVFS(t)
run.skipIfNoFUSE(t)
if runtime.GOOS == "darwin" {
t.Skip("Skipping test on OSX")
}
out, err := osCreate(run.path("testdoubleclose"))
assert.NoError(t, err)
fd := out.Fd()
fd1, err := unix.Dup(int(fd))
assert.NoError(t, err)
fd2, err := unix.Dup(int(fd))
assert.NoError(t, err)
// close one of the dups - should produce no error
err = unix.Close(fd1)
assert.NoError(t, err)
// write to the file
buf := []byte("hello")
n, err := out.Write(buf)
assert.NoError(t, err)
assert.Equal(t, 5, n)
// close it
err = out.Close()
assert.NoError(t, err)
// write to the other dup
_, err = unix.Write(fd2, buf)
if run.vfs.Opt.CacheMode < vfs.CacheModeWrites {
// produces an error if cache mode < writes
assert.Error(t, err, "input/output error")
} else {
// otherwise does not produce an error
assert.NoError(t, err)
}
// close the dup - should not produce an error
err = unix.Close(fd2)
assert.NoError(t, err)
run.waitForWriters()
run.rm(t, "testdoubleclose")
}
// writeTestDup performs the platform-specific implementation of the dup() unix
func writeTestDup(oldfd uintptr) (uintptr, error) {
newfd, err := unix.Dup(int(oldfd))
return uintptr(newfd), err
}