From 9e34355e518c018e3e92f11394b5f76620ea6ef9 Mon Sep 17 00:00:00 2001
From: Lalit Kumar Bhasin <lalit_fin@yahoo.com>
Date: Thu, 28 Sep 2023 23:55:29 -0700
Subject: [PATCH] add tests..

---
 sdk/test/metrics/sync_instruments_test.cc | 40 +++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/sdk/test/metrics/sync_instruments_test.cc b/sdk/test/metrics/sync_instruments_test.cc
index 5442dcc395..2234fca1a8 100644
--- a/sdk/test/metrics/sync_instruments_test.cc
+++ b/sdk/test/metrics/sync_instruments_test.cc
@@ -139,3 +139,43 @@ TEST(SyncInstruments, DoubleHistogram)
   histogram.Record(10.10, opentelemetry::common::KeyValueIterableView<M>({}),
                    opentelemetry::context::Context{});
 }
+
+#if OPEN_TELEMETRY_ABI_VERSION_NO >= 2
+TEST(SyncInstruments, DoubleGauge)
+{
+  InstrumentDescriptor instrument_descriptor = {
+      "double_gauge", "description", "1", InstrumentType::kGauge, InstrumentValueType::kDouble};
+  std::unique_ptr<SyncWritableMetricStorage> metric_storage(new SyncMultiMetricStorage());
+  DoubleGauge gauge(instrument_descriptor, std::move(metric_storage));
+  gauge.Record(10.10, opentelemetry::context::Context{});
+  gauge.Record(-10.10, opentelemetry::context::Context{});  // This is ignored.
+  gauge.Record(std::numeric_limits<double>::quiet_NaN(),
+               opentelemetry::context::Context{});  // This is ignored too
+  gauge.Record(std::numeric_limits<double>::infinity(),
+               opentelemetry::context::Context{});  // This is ignored too
+
+  gauge.Record(10.10,
+               opentelemetry::common::KeyValueIterableView<M>({{"abc", "123"}, {"xyz", "456"}}),
+               opentelemetry::context::Context{});
+  gauge.Record(10.10, opentelemetry::common::KeyValueIterableView<M>({}),
+               opentelemetry::context::Context{});
+}
+
+TEST(SyncInstruments, LongGauge)
+{
+  InstrumentDescriptor instrument_descriptor = {"double_gauge", "description", "1",
+                                                InstrumentType::kGauge, InstrumentValueType::kLong};
+  std::unique_ptr<SyncWritableMetricStorage> metric_storage(new SyncMultiMetricStorage());
+  DoubleGauge gauge(instrument_descriptor, std::move(metric_storage));
+  gauge.Record(10, opentelemetry::context::Context{});
+  gauge.Record(std::numeric_limits<uint64_t>::quiet_NaN(),
+               opentelemetry::context::Context{});  // This is ignored too
+  gauge.Record(std::numeric_limits<uint64_t>::infinity(),
+               opentelemetry::context::Context{});  // This is ignored too
+
+  gauge.Record(10, opentelemetry::common::KeyValueIterableView<M>({{"abc", "123"}, {"xyz", "456"}}),
+               opentelemetry::context::Context{});
+  gauge.Record(10, opentelemetry::common::KeyValueIterableView<M>({}),
+               opentelemetry::context::Context{});
+}
+#endif
\ No newline at end of file