1 files changed, 38 insertions, 0 deletions
diff --git a/pkg/sentry/fs/fsutil/dirty_set_test.go b/pkg/sentry/fs/fsutil/dirty_set_test.go
new file mode 100644
index 000000000..f7693cb19
--- /dev/null
+++ b/pkg/sentry/fs/fsutil/dirty_set_test.go
@@ -0,0 +1,38 @@
+// Copyright 2018 Google 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 fsutil
+
+import (
+	"reflect"
+	"testing"
+
+	"gvisor.googlesource.com/gvisor/pkg/sentry/memmap"
+	"gvisor.googlesource.com/gvisor/pkg/sentry/usermem"
+)
+
+func TestDirtySet(t *testing.T) {
+	var set DirtySet
+	set.MarkDirty(memmap.MappableRange{0, 2 * usermem.PageSize})
+	set.KeepDirty(memmap.MappableRange{usermem.PageSize, 2 * usermem.PageSize})
+	set.MarkClean(memmap.MappableRange{0, 2 * usermem.PageSize})
+	want := &DirtySegmentDataSlices{
+		Start:  []uint64{usermem.PageSize},
+		End:    []uint64{2 * usermem.PageSize},
+		Values: []DirtyInfo{{Keep: true}},
+	}
+	if got := set.ExportSortedSlices(); !reflect.DeepEqual(got, want) {
+		t.Errorf("set:\n\tgot %v,\n\twant %v", got, want)
+	}
+}