1 files changed, 53 insertions, 0 deletions
diff --git a/hugofs/hashing_fs_test.go b/hugofs/hashing_fs_test.go
new file mode 100644
index 000000000..b2bfb78f4
--- /dev/null
+++ b/hugofs/hashing_fs_test.go
@@ -0,0 +1,53 @@
+// Copyright 2018 The Hugo Authors. All rights reserved.
+//
+// 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 hugofs
+
+import (
+	"testing"
+
+	qt "github.com/frankban/quicktest"
+	"github.com/spf13/afero"
+)
+
+type testHashReceiver struct {
+	sum  string
+	name string
+}
+
+func (t *testHashReceiver) OnFileClose(name, md5hash string) {
+	t.name = name
+	t.sum = md5hash
+}
+
+func TestHashingFs(t *testing.T) {
+	c := qt.New(t)
+
+	fs := afero.NewMemMapFs()
+	observer := &testHashReceiver{}
+	ofs := NewHashingFs(fs, observer)
+
+	f, err := ofs.Create("hashme")
+	c.Assert(err, qt.IsNil)
+	_, err = f.Write([]byte("content"))
+	c.Assert(err, qt.IsNil)
+	c.Assert(f.Close(), qt.IsNil)
+	c.Assert(observer.sum, qt.Equals, "9a0364b9e99bb480dd25e1f0284c8555")
+	c.Assert(observer.name, qt.Equals, "hashme")
+
+	f, err = ofs.Create("nowrites")
+	c.Assert(err, qt.IsNil)
+	c.Assert(f.Close(), qt.IsNil)
+	c.Assert(observer.sum, qt.Equals, "d41d8cd98f00b204e9800998ecf8427e")
+
+}