rclone/vfs/vfstest/read_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

53 lines
1.1 KiB
Go

// +build linux darwin freebsd
package vfstest
import (
"syscall"
"testing"
"github.com/stretchr/testify/assert"
)
// TestReadFileDoubleClose tests double close on read
func TestReadFileDoubleClose(t *testing.T) {
run.skipIfVFS(t)
run.skipIfNoFUSE(t)
run.createFile(t, "testdoubleclose", "hello")
in, err := run.os.Open(run.path("testdoubleclose"))
assert.NoError(t, err)
fd := in.Fd()
fd1, err := syscall.Dup(int(fd))
assert.NoError(t, err)
fd2, err := syscall.Dup(int(fd))
assert.NoError(t, err)
// close one of the dups - should produce no error
err = syscall.Close(fd1)
assert.NoError(t, err)
// read from the file
buf := make([]byte, 1)
_, err = in.Read(buf)
assert.NoError(t, err)
// close it
err = in.Close()
assert.NoError(t, err)
// read from the other dup - should produce no error as this
// file is now buffered
n, err := syscall.Read(fd2, buf)
assert.NoError(t, err)
assert.Equal(t, 1, n)
// close the dup - should not produce an error
err = syscall.Close(fd2)
assert.NoError(t, err, "input/output error")
run.rm(t, "testdoubleclose")
}