rclone/cmd/mount/read_test.go
Nick Craig-Wood f22029bf3d Add mount command to implement FUSE mounting of remotes #494
This enables any rclone remote to be mounted and used as a filesystem
with some limitations.

Only supported for Linux, FreeBSD and OS X
2016-08-18 21:54:54 +01:00

76 lines
1.5 KiB
Go

// +build linux darwin freebsd
package mount
import (
"io"
"os"
"syscall"
"testing"
"github.com/stretchr/testify/assert"
)
// Read by byte including don't read any bytes
func TestReadByByte(t *testing.T) {
var data = []byte("hellohello")
run.createFile(t, "testfile", string(data))
run.checkDir(t, "testfile 10")
for i := 0; i < len(data); i++ {
fd, err := os.Open(run.path("testfile"))
assert.NoError(t, err)
for j := 0; j < i; j++ {
buf := make([]byte, 1)
n, err := io.ReadFull(fd, buf)
assert.NoError(t, err)
assert.Equal(t, 1, n)
assert.Equal(t, buf[0], data[j])
}
err = fd.Close()
assert.NoError(t, err)
}
run.rm(t, "testfile")
}
// Test double close
func TestReadFileDoubleClose(t *testing.T) {
run.createFile(t, "testdoubleclose", "hello")
in, err := 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 produce an error
err = syscall.Close(fd2)
assert.Error(t, err, "input/output error")
run.rm(t, "testdoubleclose")
}