atomic/fs: use safe package for atomic writes, even in multipart.

pkg/safe/safe_test.go

@@ -0,0 +1,66 @@
+/*
+ * Minio Client (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package safe
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	. "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { TestingT(t) }
+
+type MySuite struct {
+	root string
+}
+
+var _ = Suite(&MySuite{})
+
+func (s *MySuite) SetUpSuite(c *C) {
+	root, err := ioutil.TempDir(os.TempDir(), "safe-")
+	c.Assert(err, IsNil)
+	s.root = root
+}
+
+func (s *MySuite) TearDownSuite(c *C) {
+	os.RemoveAll(s.root)
+}
+
+func (s *MySuite) TestSafe(c *C) {
+	f, err := CreateFile(filepath.Join(s.root, "testfile"))
+	c.Assert(err, IsNil)
+	_, err = os.Stat(filepath.Join(s.root, "testfile"))
+	c.Assert(err, Not(IsNil))
+	err = f.Close()
+	c.Assert(err, IsNil)
+	_, err = os.Stat(filepath.Join(s.root, "testfile"))
+	c.Assert(err, IsNil)
+}
+
+func (s *MySuite) TestSafePurge(c *C) {
+	f, err := CreateFile(filepath.Join(s.root, "purgefile"))
+	c.Assert(err, IsNil)
+	_, err = os.Stat(filepath.Join(s.root, "purgefile"))
+	c.Assert(err, Not(IsNil))
+	err = f.CloseAndRemove()
+	c.Assert(err, IsNil)
+	err = f.Close()
+	c.Assert(err, Not(IsNil))
+}