1 files changed, 64 insertions, 0 deletions
diff --git a/pkg/log/json_test.go b/pkg/log/json_test.go
new file mode 100644
index 000000000..3b167dab0
--- /dev/null
+++ b/pkg/log/json_test.go
@@ -0,0 +1,64 @@
+// 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 log
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+// Tests that Level can marshal/unmarshal properly.
+func TestLevelMarshal(t *testing.T) {
+	lvs := []Level{Warning, Info, Debug}
+	for _, lv := range lvs {
+		bs, err := lv.MarshalJSON()
+		if err != nil {
+			t.Errorf("error marshaling %v: %v", lv, err)
+		}
+		var lv2 Level
+		if err := lv2.UnmarshalJSON(bs); err != nil {
+			t.Errorf("error unmarshaling %v: %v", bs, err)
+		}
+		if lv != lv2 {
+			t.Errorf("marshal/unmarshal level got %v wanted %v", lv2, lv)
+		}
+	}
+}
+
+// Test that integers can be properly unmarshaled.
+func TestUnmarshalFromInt(t *testing.T) {
+	tcs := []struct {
+		i    int
+		want Level
+	}{
+		{0, Warning},
+		{1, Info},
+		{2, Debug},
+	}
+
+	for _, tc := range tcs {
+		j, err := json.Marshal(tc.i)
+		if err != nil {
+			t.Errorf("error marshaling %v: %v", tc.i, err)
+		}
+		var lv Level
+		if err := lv.UnmarshalJSON(j); err != nil {
+			t.Errorf("error unmarshaling %v: %v", j, err)
+		}
+		if lv != tc.want {
+			t.Errorf("marshal/unmarshal %v got %v want %v", tc.i, lv, tc.want)
+		}
+	}
+}