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test_sde_sir.cpp
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128 lines (106 loc) · 4.82 KB
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/*
* Copyright (C) 2020-2026 MEmilio
*
* Authors: Nils Wassmuth, Rene Schmieding, Martin J. Kuehn
*
* Contact: Martin J. Kuehn <[email protected]>
*
* 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 "abm_helpers.h"
#include "sde_sir/model.h"
#include "memilio/compartments/stochastic_simulation.h"
#include "gtest/gtest.h"
#include "gmock/gmock.h"
const mio::ssir::Model<double>& ssir_testing_model()
{
static mio::ssir::Model<double> model;
model.populations.array().setConstant(1);
{
model.parameters.set<mio::ssir::TimeInfected<double>>(0.5);
model.parameters.set<mio::ssir::TransmissionProbabilityOnContact<double>>(1);
model.parameters.get<mio::ssir::ContactPatterns<double>>().get_baseline()(0, 0) = 3;
}
return model;
}
TEST(TestSdeSir, Model)
{
// check get_flows and get_noise
const Eigen::Vector3d y = Eigen::Vector3d::Constant(1);
Eigen::Vector2d flows = Eigen::Vector2d::Constant(1);
Eigen::Vector3d noise = Eigen::Vector3d::Constant(1);
ssir_testing_model().get_flows(y, y, 0, flows);
auto expected_flows = Eigen::Vector2d{1, 2};
EXPECT_EQ(flows, expected_flows);
ScopedMockDistribution<
testing::StrictMock<MockDistribution<mio::DistributionAdapter<std::normal_distribution<double>>>>>
normal_dist_mock;
EXPECT_CALL(normal_dist_mock.get_mock(), invoke)
.Times(testing::Exactly(2)) // one call for each flow
.WillRepeatedly(testing::Return(0.5));
ssir_testing_model().get_noise(y, y, 0, noise);
Eigen::Vector3d expected_noise;
ssir_testing_model().get_derivatives(expected_flows.array().sqrt() * 0.5, expected_noise);
EXPECT_EQ(noise, expected_noise);
}
TEST(TestSdeSir, Simulation)
{
// make a single integration step via a simulation
ScopedMockDistribution<
testing::StrictMock<MockDistribution<mio::DistributionAdapter<std::normal_distribution<double>>>>>
normal_dist_mock;
EXPECT_CALL(normal_dist_mock.get_mock(), invoke)
.Times(testing::Exactly(2)) // one call for each flow
.WillRepeatedly(testing::Return(.0)); // "disable" noise term, as it only adds sqrts of flows
auto sim = mio::StochasticSimulation(ssir_testing_model(), 0.0, 1.0);
sim.advance(1.0);
EXPECT_EQ(sim.get_result().get_num_time_points(), 2); // stores initial value and single step
auto expected_result = Eigen::Vector3d{0, 0, 3};
EXPECT_EQ(sim.get_result().get_last_value(), expected_result);
}
TEST(TestSdeSir, check_constraints_parameters)
{
// check parameters.check_constraints
mio::ssir::Model<double>::ParameterSet parameters;
parameters.set<mio::ssir::TimeInfected<double>>(6);
parameters.set<mio::ssir::TransmissionProbabilityOnContact<double>>(0.04);
parameters.get<mio::ssir::ContactPatterns<double>>().get_baseline()(0, 0) = 10;
// model.check_constraints() combines the functions from population and parameters.
// We only want to test the functions for the parameters defined in parameters.h
EXPECT_EQ(parameters.check_constraints(), 0);
mio::set_log_level(mio::LogLevel::off);
parameters.set<mio::ssir::TimeInfected<double>>(0);
EXPECT_EQ(parameters.check_constraints(), 1);
parameters.set<mio::ssir::TimeInfected<double>>(6);
parameters.set<mio::ssir::TransmissionProbabilityOnContact<double>>(10.);
EXPECT_EQ(parameters.check_constraints(), 1);
mio::set_log_level(mio::LogLevel::warn);
}
TEST(TestSdeSir, apply_constraints_parameters)
{
// check parameters.apply_constraints
const double tol_times = 1e-1;
mio::ssir::Model<double>::ParameterSet parameters;
parameters.set<mio::ssir::TimeInfected<double>>(6);
parameters.set<mio::ssir::TransmissionProbabilityOnContact<double>>(0.04);
parameters.get<mio::ssir::ContactPatterns<double>>().get_baseline()(0, 0) = 10;
EXPECT_EQ(parameters.apply_constraints(), 0);
mio::set_log_level(mio::LogLevel::off);
parameters.set<mio::ssir::TimeInfected<double>>(-2.5);
EXPECT_EQ(parameters.apply_constraints(), 1);
EXPECT_EQ(parameters.get<mio::ssir::TimeInfected<double>>(), tol_times);
parameters.set<mio::ssir::TransmissionProbabilityOnContact<double>>(10.);
EXPECT_EQ(parameters.apply_constraints(), 1);
EXPECT_NEAR(parameters.get<mio::ssir::TransmissionProbabilityOnContact<double>>(), 0.0, 1e-14);
mio::set_log_level(mio::LogLevel::warn);
}