mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
32 lines
709 B
Go
32 lines
709 B
Go
|
package ioutils
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"io/ioutil"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
"testing"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestAtomicWriteToFile(t *testing.T) {
|
||
|
|
tmpDir, err := ioutil.TempDir("", "atomic-writers-test")
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("Error when creating temporary directory: %s", err)
|
||
|
|
}
|
||
|
|
defer os.RemoveAll(tmpDir)
|
||
|
|
|
||
|
|
expected := []byte("barbaz")
|
||
|
|
if err := AtomicWriteFile(filepath.Join(tmpDir, "foo"), expected, 0600); err != nil {
|
||
|
|
t.Fatalf("Error writing to file: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
actual, err := ioutil.ReadFile(filepath.Join(tmpDir, "foo"))
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("Error reading from file: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
if bytes.Compare(actual, expected) != 0 {
|
||
|
|
t.Fatalf("Data mismatch, expected %q, got %q", expected, actual)
|
||
|
|
}
|
||
|
|
}
|