1 files changed, 62 insertions, 0 deletions
diff --git a/src/jaegertracing/opentelemetry-cpp/sdk/test/metrics/multi_metric_storage_test.cc b/src/jaegertracing/opentelemetry-cpp/sdk/test/metrics/multi_metric_storage_test.cc
new file mode 100644
index 000000000..d88946485
--- /dev/null
+++ b/src/jaegertracing/opentelemetry-cpp/sdk/test/metrics/multi_metric_storage_test.cc
@@ -0,0 +1,62 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#ifndef ENABLE_METRICS_PREVIEW
+#  include "opentelemetry/sdk/metrics/state/multi_metric_storage.h"
+#  include "opentelemetry/common/key_value_iterable_view.h"
+#  include "opentelemetry/sdk/metrics/exemplar/no_exemplar_reservoir.h"
+#  include "opentelemetry/sdk/metrics/instruments.h"
+
+#  include <gtest/gtest.h>
+
+using namespace opentelemetry;
+using namespace opentelemetry::sdk::instrumentationlibrary;
+using namespace opentelemetry::sdk::metrics;
+
+class TestMetricStorage : public WritableMetricStorage
+{
+public:
+  void RecordLong(long value, const opentelemetry::context::Context &context) noexcept override
+  {
+    num_calls_long++;
+  }
+
+  void RecordLong(long value,
+                  const opentelemetry::common::KeyValueIterable &attributes,
+                  const opentelemetry::context::Context &context) noexcept override
+  {
+    num_calls_long++;
+  }
+
+  void RecordDouble(double value, const opentelemetry::context::Context &context) noexcept override
+  {
+    num_calls_double++;
+  }
+
+  void RecordDouble(double value,
+                    const opentelemetry::common::KeyValueIterable &attributes,
+                    const opentelemetry::context::Context &context) noexcept override
+  {
+    num_calls_double++;
+  }
+
+  size_t num_calls_long;
+  size_t num_calls_double;
+};
+
+TEST(MultiMetricStorageTest, BasicTests)
+{
+  std::shared_ptr<opentelemetry::sdk::metrics::WritableMetricStorage> storage(
+      new TestMetricStorage());
+  MultiMetricStorage storages{};
+  storages.AddStorage(storage);
+  EXPECT_NO_THROW(storages.RecordLong(10l, opentelemetry::context::Context{}));
+  EXPECT_NO_THROW(storages.RecordLong(20l, opentelemetry::context::Context{}));
+
+  EXPECT_NO_THROW(storages.RecordDouble(10.0, opentelemetry::context::Context{}));
+  EXPECT_NO_THROW(storages.RecordLong(30l, opentelemetry::context::Context{}));
+
+  EXPECT_EQ(static_cast<TestMetricStorage *>(storage.get())->num_calls_long, 3);
+  EXPECT_EQ(static_cast<TestMetricStorage *>(storage.get())->num_calls_double, 1);
+}
+#endif