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/*
* Copyright (C) 2010 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;
import com.google.common.base.Supplier;
import java.util.Map;
import java.util.Set;
import junit.framework.TestCase;
public final class CaliperTest extends TestCase {
/**
* Test we detect and fail when benchmarks don't scale properly.
* @throws Exception
*/
public void testBenchmarkScalesNonLinearly() throws Exception {
TimeMeasurer timeMeasurer = new TimeMeasurer(1000, 1000);
try {
timeMeasurer.run(new NonLinearTimedRunnable());
fail();
} catch (UserException.DoesNotScaleLinearlyException e) {
}
}
private static class NonLinearTimedRunnable extends ConfiguredBenchmark
implements Supplier<ConfiguredBenchmark> {
private NonLinearTimedRunnable() {
super(new NoOpBenchmark());
}
@Override public ConfiguredBenchmark get() {
return this;
}
@Override public Object run(int reps) throws Exception {
return null; // broken! doesn't loop reps times.
}
@Override public void close() throws Exception {}
}
private static class NoOpBenchmark implements Benchmark {
@Override public Set<String> parameterNames() {
return null;
}
@Override public Set<String> parameterValues(String parameterName) {
return null;
}
@Override public ConfiguredBenchmark createBenchmark(Map<String, String> parameterValues) {
return null;
}
@Override public Map<String, Integer> getTimeUnitNames() {
return null;
}
@Override public Map<String, Integer> getInstanceUnitNames() {
return null;
}
@Override public Map<String, Integer> getMemoryUnitNames() {
return null;
}
@Override public double nanosToUnits(double nanos) {
return 0;
}
@Override public double instancesToUnits(long instances) {
return 0;
}
@Override public double bytesToUnits(long bytes) {
return 0;
}
}
}
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