ZeroTierOne/ext/opentelemetry-cpp-1.21.0/sdk/test/metrics/meter_provider_set_test.cc
2025-07-11 10:37:21 -07:00

69 lines
2 KiB
C++

// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include <gtest/gtest.h>
#include <stdlib.h>
#include "opentelemetry/metrics/meter_provider.h"
#include "opentelemetry/metrics/noop.h"
#include "opentelemetry/metrics/provider.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/sdk/metrics/provider.h"
#if defined(_MSC_VER)
# include "opentelemetry/sdk/common/env_variables.h"
using opentelemetry::sdk::common::setenv;
using opentelemetry::sdk::common::unsetenv;
#endif
using opentelemetry::metrics::MeterProvider;
using opentelemetry::metrics::NoopMeterProvider;
using opentelemetry::metrics::Provider;
namespace metrics_api = opentelemetry::metrics;
namespace metrics_sdk = opentelemetry::sdk::metrics;
TEST(Provider, SetMeterProviderDefault)
{
#ifndef NO_GETENV
unsetenv("OTEL_SDK_DISABLED");
#endif
auto tf = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
metrics_sdk::Provider::SetMeterProvider(tf);
ASSERT_EQ(tf, metrics_api::Provider::GetMeterProvider());
}
#ifndef NO_GETENV
TEST(Provider, SetMeterProviderEnabled)
{
setenv("OTEL_SDK_DISABLED", "false", 1);
auto tf = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
metrics_sdk::Provider::SetMeterProvider(tf);
ASSERT_EQ(tf, metrics_api::Provider::GetMeterProvider());
unsetenv("OTEL_SDK_DISABLED");
}
TEST(Provider, SetMeterProviderDisabled)
{
setenv("OTEL_SDK_DISABLED", "true", 1);
auto tf = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
metrics_sdk::Provider::SetMeterProvider(tf);
ASSERT_NE(tf, metrics_api::Provider::GetMeterProvider());
unsetenv("OTEL_SDK_DISABLED");
}
#endif
TEST(Provider, MultipleMeterProviders)
{
auto tf = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
metrics_sdk::Provider::SetMeterProvider(tf);
auto tf2 = opentelemetry::nostd::shared_ptr<MeterProvider>(new NoopMeterProvider());
metrics_sdk::Provider::SetMeterProvider(tf2);
ASSERT_NE(metrics_api::Provider::GetMeterProvider(), tf);
}