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122 lines
3.0 KiB
122 lines
3.0 KiB
package autofile
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import (
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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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"time"
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"github.com/stretchr/testify/require"
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cmn "github.com/tendermint/tendermint/libs/common"
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)
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func TestSIGHUP(t *testing.T) {
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// First, create an AutoFile writing to a tempfile dir
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file, err := ioutil.TempFile("", "sighup_test")
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require.NoError(t, err)
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err = file.Close()
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require.NoError(t, err)
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name := file.Name()
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// Here is the actual AutoFile
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af, err := OpenAutoFile(name)
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require.NoError(t, err)
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// Write to the file.
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_, err = af.Write([]byte("Line 1\n"))
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require.NoError(t, err)
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_, err = af.Write([]byte("Line 2\n"))
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require.NoError(t, err)
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// Move the file over
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err = os.Rename(name, name+"_old")
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require.NoError(t, err)
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// Send SIGHUP to self.
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syscall.Kill(syscall.Getpid(), syscall.SIGHUP)
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// Wait a bit... signals are not handled synchronously.
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time.Sleep(time.Millisecond * 10)
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// Write more to the file.
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_, err = af.Write([]byte("Line 3\n"))
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require.NoError(t, err)
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_, err = af.Write([]byte("Line 4\n"))
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require.NoError(t, err)
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err = af.Close()
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require.NoError(t, err)
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// Both files should exist
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if body := cmn.MustReadFile(name + "_old"); string(body) != "Line 1\nLine 2\n" {
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t.Errorf("unexpected body %s", body)
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}
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if body := cmn.MustReadFile(name); string(body) != "Line 3\nLine 4\n" {
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t.Errorf("unexpected body %s", body)
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}
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}
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// // Manually modify file permissions, close, and reopen using autofile:
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// // We expect the file permissions to be changed back to the intended perms.
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// func TestOpenAutoFilePerms(t *testing.T) {
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// file, err := ioutil.TempFile("", "permission_test")
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// require.NoError(t, err)
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// err = file.Close()
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// require.NoError(t, err)
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// name := file.Name()
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// // open and change permissions
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// af, err := OpenAutoFile(name)
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// require.NoError(t, err)
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// err = af.file.Chmod(0755)
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// require.NoError(t, err)
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// err = af.Close()
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// require.NoError(t, err)
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// // reopen and expect an ErrPermissionsChanged as Cause
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// af, err = OpenAutoFile(name)
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// require.Error(t, err)
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// if e, ok := err.(*errors.ErrPermissionsChanged); ok {
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// t.Logf("%v", e)
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// } else {
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// t.Errorf("unexpected error %v", e)
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// }
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// }
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func TestAutoFileSize(t *testing.T) {
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// First, create an AutoFile writing to a tempfile dir
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f, err := ioutil.TempFile("", "sighup_test")
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require.NoError(t, err)
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err = f.Close()
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require.NoError(t, err)
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// Here is the actual AutoFile.
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af, err := OpenAutoFile(f.Name())
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require.NoError(t, err)
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// 1. Empty file
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size, err := af.Size()
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require.Zero(t, size)
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require.NoError(t, err)
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// 2. Not empty file
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data := []byte("Maniac\n")
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_, err = af.Write(data)
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require.NoError(t, err)
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size, err = af.Size()
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require.EqualValues(t, len(data), size)
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require.NoError(t, err)
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// 3. Not existing file
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err = af.Close()
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require.NoError(t, err)
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err = os.Remove(f.Name())
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require.NoError(t, err)
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size, err = af.Size()
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require.EqualValues(t, 0, size, "Expected a new file to be empty")
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require.NoError(t, err)
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// Cleanup
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_ = os.Remove(f.Name())
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}
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