114 lines
3.9 KiB
Java
114 lines
3.9 KiB
Java
/*
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* ******************************************************************************
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* *
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* *
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* * This program and the accompanying materials are made available under the
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* * terms of the Apache License, Version 2.0 which is available at
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* * https://www.apache.org/licenses/LICENSE-2.0.
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* *
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* * See the NOTICE file distributed with this work for additional
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* * information regarding copyright ownership.
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* * Unless required by applicable law or agreed to in writing, software
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* * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* * License for the specific language governing permissions and limitations
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* * under the License.
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* *
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* * SPDX-License-Identifier: Apache-2.0
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* *****************************************************************************
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*/
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package org.deeplearning4j.rl4j.trainer;
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import org.apache.commons.lang3.builder.Builder;
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import org.deeplearning4j.rl4j.agent.IAgentLearner;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.mockito.Mock;
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import org.mockito.junit.MockitoJUnitRunner;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.function.Predicate;
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import static org.junit.Assert.*;
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import static org.mockito.Mockito.*;
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@RunWith(MockitoJUnitRunner.class)
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public class AsyncTrainerTest {
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@Mock
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Builder<IAgentLearner<Integer>> agentLearnerBuilderMock;
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@Mock
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Predicate<AsyncTrainer<Integer>> stoppingConditionMock;
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@Mock
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IAgentLearner<Integer> agentLearnerMock;
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@Before
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public void setup() {
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when(agentLearnerBuilderMock.build()).thenReturn(agentLearnerMock);
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when(agentLearnerMock.getEpisodeStepCount()).thenReturn(100);
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}
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@Test
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public void when_ctorIsCalledWithInvalidNumberOfThreads_expect_Exception() {
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try {
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AsyncTrainer sut = new AsyncTrainer(agentLearnerBuilderMock, stoppingConditionMock, 0);
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fail("IllegalArgumentException should have been thrown");
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} catch (IllegalArgumentException exception) {
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String expectedMessage = "numThreads must be greater than 0, got: [0]";
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String actualMessage = exception.getMessage();
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assertTrue(actualMessage.contains(expectedMessage));
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}
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}
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@Test
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public void when_runningWith2Threads_expect_2AgentLearnerCreated() {
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// Arrange
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Predicate<AsyncTrainer<Integer>> stoppingCondition = t -> true;
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AsyncTrainer sut = new AsyncTrainer(agentLearnerBuilderMock, stoppingCondition, 2);
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// Act
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sut.train();
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// Assert
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verify(agentLearnerBuilderMock, times(2)).build();
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}
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@Test
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public void when_stoppingConditionTriggered_expect_agentLearnersStopsAndCountersAreCorrect() {
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// Arrange
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AtomicInteger stoppingConditionHitCount = new AtomicInteger(0);
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Predicate<AsyncTrainer<Integer>> stoppingCondition = t -> stoppingConditionHitCount.incrementAndGet() >= 5;
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AsyncTrainer<Integer> sut = new AsyncTrainer<Integer>(agentLearnerBuilderMock, stoppingCondition, 2);
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// Act
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sut.train();
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// Assert
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assertEquals(6, stoppingConditionHitCount.get());
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assertEquals(6, sut.getEpisodeCount());
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assertEquals(600, sut.getStepCount());
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}
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@Test
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public void when_training_expect_countsAreReset() {
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// Arrange
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AtomicInteger stoppingConditionHitCount = new AtomicInteger(0);
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Predicate<AsyncTrainer<Integer>> stoppingCondition = t -> stoppingConditionHitCount.incrementAndGet() >= 5;
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AsyncTrainer<Integer> sut = new AsyncTrainer<Integer>(agentLearnerBuilderMock, stoppingCondition, 2);
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// Act
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sut.train();
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stoppingConditionHitCount.set(0);
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sut.train();
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// Assert
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assertEquals(6, sut.getEpisodeCount());
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assertEquals(600, sut.getStepCount());
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}
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}
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