| /* |
| * Copyright (C) 2013 Google Inc. |
| * |
| * 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. |
| */ |
| |
| package com.google.caliper.runner; |
| |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import com.google.caliper.BeforeExperiment; |
| import com.google.caliper.Benchmark; |
| import com.google.common.collect.Lists; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| import java.util.List; |
| |
| /** |
| * Integration tests for misbehaving benchmarks. |
| */ |
| @RunWith(JUnit4.class) |
| public class BadUserCodeTest { |
| @Rule public CaliperTestWatcher runner = new CaliperTestWatcher(); |
| |
| @Test |
| |
| public void testExceptionInInit() throws Exception { |
| try { |
| runner.forBenchmark(ExceptionInInitBenchmark.class).run(); |
| fail(); |
| } catch (UserCodeException expected) {} |
| } |
| |
| private static void throwSomeUserException() { |
| throw new RuntimeException(); |
| } |
| |
| static class ExceptionInInitBenchmark { |
| static { |
| throwSomeUserException(); |
| } |
| |
| @Benchmark void timeSomething(int reps) { |
| fail("" + reps); |
| } |
| } |
| |
| @Test |
| |
| public void testExceptionInConstructor() throws Exception { |
| try { |
| runner.forBenchmark(ExceptionInConstructorBenchmark.class).run(); |
| fail(); |
| } catch (UserCodeException expected) {} |
| } |
| |
| static class ExceptionInConstructorBenchmark { |
| ExceptionInConstructorBenchmark() { |
| throw new RuntimeException(); |
| } |
| |
| @Benchmark void timeSomething(int reps) { |
| fail("" + reps); |
| } |
| } |
| |
| @Test |
| |
| public void testExceptionInMethod() throws Exception { |
| try { |
| runner.forBenchmark(ExceptionInMethodBenchmark.class).run(); |
| fail(); |
| } catch (UserCodeException expected) {} |
| } |
| |
| static class ExceptionInMethodBenchmark { |
| @Benchmark void timeSomething(@SuppressWarnings("unused") int reps) { |
| throw new RuntimeException(); |
| } |
| } |
| |
| @Test |
| |
| public void testExceptionInMethod_notInDryRun() throws Exception { |
| try { |
| runner.forBenchmark(ExceptionLateInMethodBenchmark.class).run(); |
| fail(); |
| } catch (ProxyWorkerException expected) { |
| assertTrue(expected.getMessage().contains(ExceptionLateInMethodBenchmark.class.getName())); |
| } |
| } |
| |
| static class ExceptionLateInMethodBenchmark { |
| @Benchmark void timeSomething(int reps) { |
| if (reps > 1) { |
| throw new RuntimeException(); |
| } |
| } |
| } |
| |
| @Test |
| |
| public void testExceptionInSetUp() throws Exception { |
| try { |
| runner.forBenchmark(ExceptionInSetUpBenchmark.class).run(); |
| fail(); |
| } catch (UserCodeException expected) {} |
| } |
| |
| static class ExceptionInSetUpBenchmark { |
| @BeforeExperiment void setUp() { |
| throw new RuntimeException(); |
| } |
| |
| @Benchmark void timeSomething(int reps) { |
| fail("" + reps); |
| } |
| } |
| |
| @Test |
| |
| public void testNonDeterministicAllocation_noTrackAllocations() throws Exception { |
| try { |
| runner.forBenchmark(NonDeterministicAllocationBenchmark.class) |
| .instrument("allocation") |
| .options("-Cinstrument.allocation.options.trackAllocations=" + false) |
| .run(); |
| fail(); |
| } catch (ProxyWorkerException expected) { |
| String message = "Your benchmark appears to have non-deterministic allocation behavior"; |
| assertTrue("Expected " + expected.getMessage() + " to contain " + message, |
| expected.getMessage().contains(message)); |
| } |
| } |
| |
| @Test |
| |
| public void testNonDeterministicAllocation_trackAllocations() throws Exception { |
| try { |
| runner.forBenchmark(NonDeterministicAllocationBenchmark.class) |
| .instrument("allocation") |
| .options("-Cinstrument.allocation.options.trackAllocations=" + true) |
| .run(); |
| fail(); |
| } catch (ProxyWorkerException expected) { |
| String message = "Your benchmark appears to have non-deterministic allocation behavior"; |
| assertTrue("Expected " + expected.getMessage() + " to contain " + message, |
| expected.getMessage().contains(message)); |
| } |
| } |
| |
| /** The number of allocations is non deterministic because it depends on static state. */ |
| static class NonDeterministicAllocationBenchmark { |
| static int timeCount = 0; |
| // We dump items into this list so the jit cannot remove the allocations |
| static List<Object> list = Lists.newArrayList(); |
| @Benchmark int timeSomethingFBZ(@SuppressWarnings("unused") int reps) { |
| timeCount++; |
| if (timeCount % 2 == 0) { |
| list.add(new Object()); |
| return list.hashCode(); |
| } |
| return this.hashCode(); |
| } |
| } |
| |
| @Test |
| |
| public void testComplexNonDeterministicAllocation_noTrackAllocations() throws Exception { |
| // Without trackAllocations enabled this kind of non-determinism cannot be detected. |
| runner.forBenchmark(ComplexNonDeterministicAllocationBenchmark.class) |
| .instrument("allocation") |
| .options("-Cinstrument.allocation.options.trackAllocations=" + false) |
| .run(); |
| } |
| |
| @Test |
| |
| public void testComplexNonDeterministicAllocation_trackAllocations() throws Exception { |
| try { |
| runner.forBenchmark(ComplexNonDeterministicAllocationBenchmark.class) |
| .instrument("allocation") |
| .options("-Cinstrument.allocation.options.trackAllocations=" + true) |
| .run(); |
| } catch (ProxyWorkerException expected) { |
| String message = "Your benchmark appears to have non-deterministic allocation behavior"; |
| assertTrue("Expected " + expected.getMessage() + " to contain " + message, |
| expected.getMessage().contains(message)); |
| } |
| } |
| |
| /** Benchmark allocates the same number of things each time but in a different way. */ |
| static class ComplexNonDeterministicAllocationBenchmark { |
| static int timeCount = 0; |
| @Benchmark int timeSomethingFBZ(@SuppressWarnings("unused") int reps) { |
| // We dump items into this list so the jit cannot remove the allocations |
| List<Object> list = Lists.newArrayList(); |
| timeCount++; |
| if (timeCount % 2 == 0) { |
| list.add(new Object()); |
| } else { |
| list.add(new Object()); |
| } |
| return list.hashCode(); |
| } |
| } |
| } |