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/*
*
* Copyright 2017 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 "src/core/lib/debug/stats.h"
#include <algorithm>
#include <memory>
#include "gtest/gtest.h"
#include <grpc/grpc.h>
#include "src/core/lib/debug/stats_data.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "test/core/util/test_config.h"
namespace grpc_core {
namespace testing {
class Snapshot {
public:
std::unique_ptr<GlobalStats> delta() {
auto now = global_stats().Collect();
return now->Diff(*begin_);
}
private:
std::unique_ptr<GlobalStats> begin_ = global_stats().Collect();
};
TEST(StatsTest, IncSpecificCounter) {
std::unique_ptr<Snapshot> snapshot(new Snapshot);
ExecCtx exec_ctx;
global_stats().IncrementClientCallsCreated();
EXPECT_EQ(snapshot->delta()->client_calls_created, 1);
}
static int FindExpectedBucket(const HistogramView& h, int value) {
if (value < 0) {
return 0;
}
if (value >= h.bucket_boundaries[h.num_buckets]) {
return h.num_buckets - 1;
}
return std::upper_bound(h.bucket_boundaries,
h.bucket_boundaries + h.num_buckets, value) -
h.bucket_boundaries - 1;
}
class HistogramTest : public ::testing::TestWithParam<int> {};
TEST_P(HistogramTest, CheckBucket) {
const GlobalStats::Histogram kHistogram =
static_cast<GlobalStats::Histogram>(GetParam());
auto some_stats = std::make_unique<GlobalStats>();
auto view = some_stats->histogram(kHistogram);
const int max_bucket_boundary = view.bucket_boundaries[view.num_buckets];
for (int i = -1000; i < max_bucket_boundary + 1000; i++) {
ASSERT_EQ(FindExpectedBucket(view, i), view.bucket_for(i))
<< "i=" << i << " expect_bucket="
<< view.bucket_boundaries[FindExpectedBucket(view, i)]
<< " actual_bucket=" << view.bucket_boundaries[view.bucket_for(i)];
}
}
INSTANTIATE_TEST_SUITE_P(
HistogramTestCases, HistogramTest,
::testing::Range<int>(0, static_cast<int>(GlobalStats::Histogram::COUNT)));
} // namespace testing
} // namespace grpc_core
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
grpc_init();
int ret = RUN_ALL_TESTS();
grpc_shutdown();
return ret;
}
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