129 lines
2.6 KiB
Go
129 lines
2.6 KiB
Go
// +build linux darwin freebsd
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package mount
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import (
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"io"
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"io/ioutil"
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"os"
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"syscall"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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// Read by byte including don't read any bytes
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func TestReadByByte(t *testing.T) {
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run.skipIfNoFUSE(t)
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var data = []byte("hellohello")
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run.createFile(t, "testfile", string(data))
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run.checkDir(t, "testfile 10")
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for i := 0; i < len(data); i++ {
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fd, err := os.Open(run.path("testfile"))
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assert.NoError(t, err)
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for j := 0; j < i; j++ {
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buf := make([]byte, 1)
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n, err := io.ReadFull(fd, buf)
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assert.NoError(t, err)
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assert.Equal(t, 1, n)
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assert.Equal(t, buf[0], data[j])
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}
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err = fd.Close()
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assert.NoError(t, err)
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}
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run.rm(t, "testfile")
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}
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// Test double close
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func TestReadFileDoubleClose(t *testing.T) {
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run.skipIfNoFUSE(t)
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run.createFile(t, "testdoubleclose", "hello")
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in, err := os.Open(run.path("testdoubleclose"))
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assert.NoError(t, err)
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fd := in.Fd()
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fd1, err := syscall.Dup(int(fd))
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assert.NoError(t, err)
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fd2, err := syscall.Dup(int(fd))
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assert.NoError(t, err)
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// close one of the dups - should produce no error
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err = syscall.Close(fd1)
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assert.NoError(t, err)
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// read from the file
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buf := make([]byte, 1)
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_, err = in.Read(buf)
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assert.NoError(t, err)
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// close it
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err = in.Close()
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assert.NoError(t, err)
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// read from the other dup - should produce no error as this
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// file is now buffered
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n, err := syscall.Read(fd2, buf)
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assert.NoError(t, err)
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assert.Equal(t, 1, n)
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// close the dup - should not produce an error
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err = syscall.Close(fd2)
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assert.NoError(t, err, "input/output error")
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run.rm(t, "testdoubleclose")
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}
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// Test seeking
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func TestReadSeek(t *testing.T) {
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run.skipIfNoFUSE(t)
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var data = []byte("helloHELLO")
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run.createFile(t, "testfile", string(data))
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run.checkDir(t, "testfile 10")
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fd, err := os.Open(run.path("testfile"))
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assert.NoError(t, err)
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// Seek to half way
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_, err = fd.Seek(5, 0)
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assert.NoError(t, err)
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buf, err := ioutil.ReadAll(fd)
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assert.NoError(t, err)
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assert.Equal(t, buf, []byte("HELLO"))
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// Test seeking to the end
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_, err = fd.Seek(10, 0)
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assert.NoError(t, err)
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buf, err = ioutil.ReadAll(fd)
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assert.NoError(t, err)
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assert.Equal(t, buf, []byte(""))
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// Test seeking beyond the end
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_, err = fd.Seek(1000000, 0)
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assert.NoError(t, err)
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buf, err = ioutil.ReadAll(fd)
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assert.NoError(t, err)
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assert.Equal(t, buf, []byte(""))
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// Now back to the start
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_, err = fd.Seek(0, 0)
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assert.NoError(t, err)
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buf, err = ioutil.ReadAll(fd)
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assert.NoError(t, err)
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assert.Equal(t, buf, []byte("helloHELLO"))
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err = fd.Close()
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assert.NoError(t, err)
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run.rm(t, "testfile")
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}
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