1 files changed, 52 insertions, 0 deletions
diff --git a/pkg/sentry/hostcpu/hostcpu_test.go b/pkg/sentry/hostcpu/hostcpu_test.go
new file mode 100644
index 000000000..a82e1a271
--- /dev/null
+++ b/pkg/sentry/hostcpu/hostcpu_test.go
@@ -0,0 +1,52 @@
+// 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 hostcpu
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestMaxValueInLinuxBitmap(t *testing.T) {
+	for _, test := range []struct {
+		str string
+		max uint64
+	}{
+		{"0", 0},
+		{"0\n", 0},
+		{"0,2", 2},
+		{"0-63", 63},
+		{"0-3,8-11", 11},
+	} {
+		t.Run(fmt.Sprintf("%q", test.str), func(t *testing.T) {
+			max, err := maxValueInLinuxBitmap(test.str)
+			if err != nil || max != test.max {
+				t.Errorf("maxValueInLinuxBitmap: got (%d, %v), wanted (%d, nil)", max, err, test.max)
+			}
+		})
+	}
+}
+
+func TestMaxValueInLinuxBitmapErrors(t *testing.T) {
+	for _, str := range []string{"", "\n"} {
+		t.Run(fmt.Sprintf("%q", str), func(t *testing.T) {
+			max, err := maxValueInLinuxBitmap(str)
+			if err == nil {
+				t.Errorf("maxValueInLinuxBitmap: got (%d, nil), wanted (_, error)", max)
+			}
+			t.Log(err)
+		})
+	}
+}