diff options
Diffstat (limited to 'test/core/iomgr/time_averaged_stats_test.cc')
-rw-r--r-- | test/core/iomgr/time_averaged_stats_test.cc | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/test/core/iomgr/time_averaged_stats_test.cc b/test/core/iomgr/time_averaged_stats_test.cc new file mode 100644 index 0000000000..b932e62d1f --- /dev/null +++ b/test/core/iomgr/time_averaged_stats_test.cc @@ -0,0 +1,193 @@ +/* + * + * Copyright 2015 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/iomgr/time_averaged_stats.h" + +#include <math.h> + +#include <grpc/support/log.h> +#include "test/core/util/test_config.h" + +#define EXPECT_EQ(a, b) GPR_ASSERT((a) == (b)) +#define EXPECT_DOUBLE_EQ(a, b) GPR_ASSERT(fabs((a) - (b)) < 1e-9) + +static void no_regress_no_persist_test_1(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 0, 0.0); + EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); + + /* Should have no effect */ + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); + + /* Should replace old average */ + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); +} + +static void no_regress_no_persist_test_2(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 0, 0.0); + EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); + /* Should replace init value */ + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 3000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(3000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); +} + +static void no_regress_no_persist_test_3(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 0, 0.0); + EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); + /* Should replace init value */ + grpc_time_averaged_stats_add_sample(&tas, 2500); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(2500, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 3500); + grpc_time_averaged_stats_add_sample(&tas, 4500); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(4000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); +} + +static void some_regress_no_persist_test(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 0.5, 0.0); + EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + /* (2 * 2000 + 0.5 * 1000) / 2.5 */ + EXPECT_DOUBLE_EQ(1800, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2.5, tas.aggregate_total_weight); +} + +static void some_decay_test(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 1, 0.0); + EXPECT_EQ(1000, tas.aggregate_weighted_avg); + /* Should avg with init value */ + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(1500, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(1500, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(1500, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); +} + +static void no_regress_full_persist_test(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 0, 1.0); + EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); + + /* Should replace init value */ + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_EQ(2000, tas.aggregate_weighted_avg); + EXPECT_EQ(1, tas.aggregate_total_weight); + + /* Will result in average of the 3 samples. */ + grpc_time_averaged_stats_add_sample(&tas, 2300); + grpc_time_averaged_stats_add_sample(&tas, 2300); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(2200, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(3, tas.aggregate_total_weight); +} + +static void no_regress_some_persist_test(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 0, 0.5); + /* Should replace init value */ + grpc_time_averaged_stats_add_sample(&tas, 2000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 2500); + grpc_time_averaged_stats_add_sample(&tas, 4000); + grpc_time_averaged_stats_update_average(&tas); + EXPECT_DOUBLE_EQ(3000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2.5, tas.aggregate_total_weight); +} + +static void some_regress_some_persist_test(void) { + grpc_time_averaged_stats tas; + grpc_time_averaged_stats_init(&tas, 1000, 0.4, 0.6); + /* Sample weight = 0 */ + EXPECT_EQ(1000, tas.aggregate_weighted_avg); + EXPECT_EQ(0, tas.aggregate_total_weight); + + grpc_time_averaged_stats_update_average(&tas); + /* (0.6 * 0 * 1000 + 0.4 * 1000 / 0.4) */ + EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(0.4, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 2640); + grpc_time_averaged_stats_update_average(&tas); + /* (1 * 2640 + 0.6 * 0.4 * 1000 + 0.4 * 1000 / (1 + 0.6 * 0.4 + 0.4) */ + EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(1.64, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 2876.8); + grpc_time_averaged_stats_update_average(&tas); + /* (1 * 2876.8 + 0.6 * 1.64 * 2000 + 0.4 * 1000 / (1 + 0.6 * 1.64 + 0.4) */ + EXPECT_DOUBLE_EQ(2200, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2.384, tas.aggregate_total_weight); + + grpc_time_averaged_stats_add_sample(&tas, 4944.32); + grpc_time_averaged_stats_update_average(&tas); + /* (1 * 4944.32 + 0.6 * 2.384 * 2200 + 0.4 * 1000) / + (1 + 0.6 * 2.384 + 0.4) */ + EXPECT_DOUBLE_EQ(3000, tas.aggregate_weighted_avg); + EXPECT_DOUBLE_EQ(2.8304, tas.aggregate_total_weight); +} + +int main(int argc, char** argv) { + grpc_test_init(argc, argv); + no_regress_no_persist_test_1(); + no_regress_no_persist_test_2(); + no_regress_no_persist_test_3(); + some_regress_no_persist_test(); + some_decay_test(); + no_regress_full_persist_test(); + no_regress_some_persist_test(); + some_regress_some_persist_test(); + return 0; +} |