1 files changed, 80 insertions, 0 deletions
diff --git a/drm/libmediadrm/tests/CounterMetric_test.cpp b/drm/libmediadrm/tests/CounterMetric_test.cpp
new file mode 100644
index 0000000000..6bca0dafe2
--- /dev/null
+++ b/drm/libmediadrm/tests/CounterMetric_test.cpp
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include <gtest/gtest.h>
+
+#include "CounterMetric.h"
+
+namespace android {
+
+/**
+ * Unit tests for the CounterMetric class.
+ */
+class CounterMetricTest : public ::testing::Test {
+};
+
+TEST_F(CounterMetricTest, IntDataTypeEmpty) {
+  CounterMetric<int> metric("MyMetricName", "MetricAttributeName");
+
+  std::map<int, int64_t> values;
+
+  metric.ExportValues(
+      [&] (int attribute_value, int64_t value) {
+          values[attribute_value] = value;
+      });
+
+  EXPECT_TRUE(values.empty());
+}
+
+TEST_F(CounterMetricTest, IntDataType) {
+  CounterMetric<int> metric("MyMetricName", "MetricAttributeName");
+
+  std::map<int, int64_t> values;
+
+  metric.Increment(7);
+  metric.Increment(8);
+  metric.Increment(8);
+
+  metric.ExportValues(
+      [&] (int attribute_value, int64_t value) {
+          values[attribute_value] = value;
+      });
+
+  ASSERT_EQ(2u, values.size());
+  EXPECT_EQ(1, values[7]);
+  EXPECT_EQ(2, values[8]);
+}
+
+TEST_F(CounterMetricTest, StringDataType) {
+  CounterMetric<std::string> metric("MyMetricName", "MetricAttributeName");
+
+  std::map<std::string, int64_t> values;
+
+  metric.Increment("a");
+  metric.Increment("b");
+  metric.Increment("b");
+
+  metric.ExportValues(
+      [&] (std::string attribute_value, int64_t value) {
+          values[attribute_value] = value;
+      });
+
+  ASSERT_EQ(2u, values.size());
+  EXPECT_EQ(1, values["a"]);
+  EXPECT_EQ(2, values["b"]);
+}
+
+}  // namespace android