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146 lines
3.7 KiB
146 lines
3.7 KiB
package autofile
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import (
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"context"
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"os"
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"path/filepath"
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"syscall"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestSIGHUP(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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origDir, err := os.Getwd()
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require.NoError(t, err)
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t.Cleanup(func() {
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if err := os.Chdir(origDir); err != nil {
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t.Error(err)
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}
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})
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// First, create a temporary directory and move into it
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dir := t.TempDir()
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require.NoError(t, os.Chdir(dir))
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// Create an AutoFile in the temporary directory
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name := "sighup_test"
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af, err := OpenAutoFile(ctx, name)
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require.NoError(t, err)
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require.True(t, filepath.IsAbs(af.Path))
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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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require.NoError(t, os.Rename(name, name+"_old"))
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// Move into a different temporary directory
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otherDir := t.TempDir()
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require.NoError(t, os.Chdir(otherDir))
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// Send SIGHUP to self.
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require.NoError(t, 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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require.NoError(t, af.Close())
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// Both files should exist
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if body := mustReadFile(t, filepath.Join(dir, 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 := mustReadFile(t, filepath.Join(dir, 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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// The current directory should be empty
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files, err := os.ReadDir(".")
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require.NoError(t, err)
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assert.Empty(t, files)
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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 := os.CreateTemp("", "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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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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// First, create an AutoFile writing to a tempfile dir
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f, err := os.CreateTemp(t.TempDir(), "sighup_test")
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require.NoError(t, err)
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require.NoError(t, f.Close())
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// Here is the actual AutoFile.
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af, err := OpenAutoFile(ctx, 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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require.NoError(t, af.closeFile())
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require.NoError(t, os.Remove(f.Name()))
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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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t.Cleanup(func() { os.Remove(f.Name()) })
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}
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func mustReadFile(t *testing.T, filePath string) []byte {
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fileBytes, err := os.ReadFile(filePath)
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require.NoError(t, err)
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return fileBytes
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}
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