diff options
Diffstat (limited to 'test/core')
| -rw-r--r-- | test/core/iomgr/time_averaged_stats_test.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/test/core/iomgr/time_averaged_stats_test.c b/test/core/iomgr/time_averaged_stats_test.c new file mode 100644 index 0000000000..7ed2f84f21 --- /dev/null +++ b/test/core/iomgr/time_averaged_stats_test.c @@ -0,0 +1,208 @@ +/* + * + * Copyright 2014, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/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() { + 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() { + 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() { + 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() { + 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() { + 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() { + 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() { + 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() { + 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; +} |