diff options
Diffstat (limited to 'test/core/transport/bdp_estimator_test.cc')
-rw-r--r-- | test/core/transport/bdp_estimator_test.cc | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/test/core/transport/bdp_estimator_test.cc b/test/core/transport/bdp_estimator_test.cc new file mode 100644 index 0000000000..2c4fc4588b --- /dev/null +++ b/test/core/transport/bdp_estimator_test.cc @@ -0,0 +1,149 @@ +/* + * + * Copyright 2016 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/transport/bdp_estimator.h" + +#include <grpc/grpc.h> +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> +#include <grpc/support/useful.h> +#include <gtest/gtest.h> +#include <limits.h> +#include "src/core/lib/iomgr/timer_manager.h" +#include "src/core/lib/support/string.h" +#include "test/core/util/test_config.h" + +extern "C" gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type); + +namespace grpc_core { +namespace testing { +namespace { +int g_clock = 0; + +gpr_timespec fake_gpr_now(gpr_clock_type clock_type) { + gpr_timespec ts; + ts.tv_sec = g_clock; + ts.tv_nsec = 0; + ts.clock_type = clock_type; + return ts; +} + +void inc_time(void) { g_clock += 30; } +} // namespace + +TEST(BdpEstimatorTest, NoOp) { BdpEstimator est("test"); } + +TEST(BdpEstimatorTest, EstimateBdpNoSamples) { + BdpEstimator est("test"); + est.EstimateBdp(); +} + +namespace { +void AddSamples(BdpEstimator *estimator, int64_t *samples, size_t n) { + estimator->AddIncomingBytes(1234567); + inc_time(); + grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; + estimator->SchedulePing(); + estimator->StartPing(); + for (size_t i = 0; i < n; i++) { + estimator->AddIncomingBytes(samples[i]); + } + gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), + gpr_time_from_millis(1, GPR_TIMESPAN))); + grpc_exec_ctx_invalidate_now(&exec_ctx); + estimator->CompletePing(&exec_ctx); + grpc_exec_ctx_finish(&exec_ctx); +} + +void AddSample(BdpEstimator *estimator, int64_t sample) { + AddSamples(estimator, &sample, 1); +} +} // namespace + +TEST(BdpEstimatorTest, GetEstimate1Sample) { + BdpEstimator est("test"); + AddSample(&est, 100); + est.EstimateBdp(); +} + +TEST(BdpEstimatorTest, GetEstimate2Samples) { + BdpEstimator est("test"); + AddSample(&est, 100); + AddSample(&est, 100); + est.EstimateBdp(); +} + +TEST(BdpEstimatorTest, GetEstimate3Samples) { + BdpEstimator est("test"); + AddSample(&est, 100); + AddSample(&est, 100); + AddSample(&est, 100); + est.EstimateBdp(); +} + +namespace { +int64_t NextPow2(int64_t v) { + v--; + v |= v >> 1; + v |= v >> 2; + v |= v >> 4; + v |= v >> 8; + v |= v >> 16; + v |= v >> 32; + v++; + return v; +} +} // namespace + +class BdpEstimatorRandomTest : public ::testing::TestWithParam<size_t> {}; + +TEST_P(BdpEstimatorRandomTest, GetEstimateRandomValues) { + BdpEstimator est("test"); + const int kMaxSample = 65535; + int min = kMaxSample; + int max = 0; + for (size_t i = 0; i < GetParam(); i++) { + int sample = rand() % (kMaxSample + 1); + if (sample < min) min = sample; + if (sample > max) max = sample; + AddSample(&est, sample); + if (i >= 3) { + EXPECT_LE(est.EstimateBdp(), GPR_MAX(65536, 2 * NextPow2(max))) + << " min:" << min << " max:" << max << " sample:" << sample; + } + } +} + +INSTANTIATE_TEST_CASE_P(TooManyNames, BdpEstimatorRandomTest, + ::testing::Values(3, 4, 6, 9, 13, 19, 28, 42, 63, 94, + 141, 211, 316, 474, 711)); + +} // namespace testing +} // namespace grpc_core + +int main(int argc, char **argv) { + grpc_test_init(argc, argv); + gpr_now_impl = grpc_core::testing::fake_gpr_now; + grpc_init(); + grpc_timer_manager_set_threading(false); + ::testing::InitGoogleTest(&argc, argv); + int ret = RUN_ALL_TESTS(); + grpc_shutdown(); + return ret; +} |