1 files changed, 61 insertions, 0 deletions
diff --git a/test/cpp/server/load_reporter/get_cpu_stats_test.cc b/test/cpp/server/load_reporter/get_cpu_stats_test.cc
new file mode 100644
index 0000000000..5b1d5fa3a4
--- /dev/null
+++ b/test/cpp/server/load_reporter/get_cpu_stats_test.cc
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * 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 <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <gtest/gtest.h>
+
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+#include "src/cpp/server/load_reporter/get_cpu_stats.h"
+
+namespace grpc {
+namespace testing {
+namespace {
+
+TEST(GetCpuStatsTest, ReadOnce) { ::grpc::load_reporter::GetCpuStatsImpl(); }
+
+TEST(GetCpuStatsTest, BusyNoLargerThanTotal) {
+  auto p = ::grpc::load_reporter::GetCpuStatsImpl();
+  uint64_t busy = p.first;
+  uint64_t total = p.second;
+  ASSERT_LE(busy, total);
+}
+
+TEST(GetCpuStatsTest, Ascending) {
+  const size_t kRuns = 100;
+  auto prev = ::grpc::load_reporter::GetCpuStatsImpl();
+  for (size_t i = 0; i < kRuns; ++i) {
+    auto cur = ::grpc::load_reporter::GetCpuStatsImpl();
+    ASSERT_LE(prev.first, cur.first);
+    ASSERT_LE(prev.second, cur.second);
+    prev = cur;
+  }
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}