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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include <gtest/gtest.h>
#include "opentelemetry/metrics/meter_provider.h"
#include "opentelemetry/metrics/noop.h"
#include "opentelemetry/metrics/provider.h"
#include "opentelemetry/nostd/shared_ptr.h"
using opentelemetry::metrics::MeterProvider;
using opentelemetry::metrics::NoopMeterProvider;
using opentelemetry::metrics::Provider;
TEST(Provider, GetMeterProviderDefault)
{
auto tf = Provider::GetMeterProvider();
EXPECT_NE(nullptr, tf);
}
TEST(Provider, SetMeterProvider)
{
auto tf = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
Provider::SetMeterProvider(tf);
ASSERT_EQ(tf, Provider::GetMeterProvider());
}
TEST(Provider, MultipleMeterProviders)
{
auto tf = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
Provider::SetMeterProvider(tf);
auto tf2 = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
Provider::SetMeterProvider(tf2);
ASSERT_NE(Provider::GetMeterProvider(), tf);
}
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