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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.
*
*/
extern "C" {
#include "src/core/lib/debug/stats.h"
}
#include <grpc/grpc.h>
#include <grpc/support/log.h>
#include <gtest/gtest.h>
namespace grpc {
namespace testing {
class Snapshot {
public:
Snapshot() { grpc_stats_collect(&begin_); }
grpc_stats_data delta() {
grpc_stats_data now;
grpc_stats_collect(&now);
grpc_stats_data delta;
grpc_stats_diff(&now, &begin_, &delta);
return delta;
}
private:
grpc_stats_data begin_;
};
TEST(StatsTest, IncCounters) {
for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
Snapshot snapshot;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GRPC_STATS_INC_COUNTER(&exec_ctx, (grpc_stats_counters)i);
grpc_exec_ctx_finish(&exec_ctx);
EXPECT_EQ(snapshot.delta().counters[i], 1);
}
}
TEST(StatsTest, IncSpecificCounter) {
Snapshot snapshot;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GRPC_STATS_INC_SYSCALL_POLL(&exec_ctx);
grpc_exec_ctx_finish(&exec_ctx);
EXPECT_EQ(snapshot.delta().counters[GRPC_STATS_COUNTER_SYSCALL_POLL], 1);
}
static int FindExpectedBucket(int i, int j) {
if (j < 0) {
return 0;
}
if (j >= grpc_stats_histo_bucket_boundaries[i][grpc_stats_histo_buckets[i]]) {
return grpc_stats_histo_buckets[i] - 1;
}
return std::upper_bound(grpc_stats_histo_bucket_boundaries[i],
grpc_stats_histo_bucket_boundaries[i] +
grpc_stats_histo_buckets[i],
j) -
grpc_stats_histo_bucket_boundaries[i] - 1;
}
TEST(StatsTest, IncHistogram) {
for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
std::vector<int> test_values;
for (int j = -1000;
j <
grpc_stats_histo_bucket_boundaries[i]
[grpc_stats_histo_buckets[i] - 1] +
1000;
j++) {
test_values.push_back(j);
}
std::random_shuffle(test_values.begin(), test_values.end());
if (test_values.size() > 10000) {
test_values.resize(10000);
}
for (auto j : test_values) {
Snapshot snapshot;
int expected_bucket = FindExpectedBucket(i, j);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_stats_inc_histogram[i](&exec_ctx, j);
grpc_exec_ctx_finish(&exec_ctx);
auto delta = snapshot.delta();
EXPECT_EQ(delta.histograms[grpc_stats_histo_start[i] + expected_bucket],
1);
}
}
}
} // namespace testing
} // namespace grpc
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
grpc_init();
int ret = RUN_ALL_TESTS();
grpc_shutdown();
return ret;
}
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