org.pitest.coverage.execute.DefaultCoverageGenerator Maven / Gradle / Ivy
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/*
* Copyright 2012 Henry Coles
*
* 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 org.pitest.coverage.execute;
import org.pitest.bytecode.analysis.ClassTree;
import org.pitest.classinfo.ClassName;
import org.pitest.classpath.CodeSource;
import org.pitest.coverage.CoverageData;
import org.pitest.coverage.CoverageExporter;
import org.pitest.coverage.CoverageGenerator;
import org.pitest.coverage.CoverageResult;
import org.pitest.coverage.analysis.LineMapper;
import org.pitest.functional.prelude.Prelude;
import org.pitest.help.Help;
import org.pitest.help.PitHelpError;
import org.pitest.mutationtest.config.TestPluginArguments;
import org.pitest.process.LaunchOptions;
import org.pitest.process.ProcessArgs;
import org.pitest.testapi.Description;
import org.pitest.util.ExitCode;
import org.pitest.util.Log;
import org.pitest.util.PitError;
import org.pitest.util.SocketFinder;
import org.pitest.util.StringUtil;
import org.pitest.util.Timings;
import org.pitest.util.Unchecked;
import org.pitest.util.Verbosity;
import java.io.File;
import java.io.IOException;
import java.net.ServerSocket;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.logging.Logger;
import java.util.stream.Collectors;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
public class DefaultCoverageGenerator implements CoverageGenerator {
private static final Logger LOG = Log.getLogger();
private final CoverageOptions coverageOptions;
private final LaunchOptions launchOptions;
private final CodeSource code;
private final Timings timings;
private final File workingDir;
private final CoverageExporter exporter;
private final Verbosity verbosity;
public DefaultCoverageGenerator(final File workingDir,
final CoverageOptions coverageOptions, final LaunchOptions launchOptions,
final CodeSource code, final CoverageExporter exporter,
final Timings timings, Verbosity verbosity) {
this.coverageOptions = coverageOptions;
this.code = code;
this.launchOptions = launchOptions;
this.timings = timings;
this.workingDir = workingDir;
this.exporter = exporter;
this.verbosity = verbosity;
}
@Override
public CoverageData calculateCoverage(Predicate testFilter) {
try {
final long t0 = System.nanoTime();
this.timings.registerStart(Timings.Stage.SCAN_CLASS_PATH);
List tests = this.code.testTrees()
.map(ClassTree::name)
.filter(testFilter)
.map(ClassName::asInternalName)
.collect(Collectors.toList());
this.timings.registerEnd(Timings.Stage.SCAN_CLASS_PATH);
final CoverageData coverage = new CoverageData(this.code, new LineMapper(
this.code));
this.timings.registerStart(Timings.Stage.COVERAGE);
if (tests.isEmpty()) {
// This may happen as a result of filtering for incremental analysis as well as
// simple misconfiguration.
LOG.info("No test classes identified to scan");
} else {
gatherCoverageData(tests, coverage);
}
this.timings.registerEnd(Timings.Stage.COVERAGE);
final long time = NANOSECONDS.toSeconds(System.nanoTime() - t0);
LOG.info("Calculated coverage in " + time + " seconds.");
verifyBuildSuitableForMutationTesting(coverage);
this.exporter.recordCoverage(coverage.createCoverage());
return coverage;
} catch (final PitHelpError phe) {
throw phe;
} catch (final Exception e) {
throw Unchecked.translateCheckedException(e);
}
}
private static void verifyBuildSuitableForMutationTesting(final CoverageData coverage) {
if (!coverage.allTestsGreen()) {
LOG.severe("Tests failing without mutation: " + StringUtil.newLine()
+ coverage.getFailingTestDescriptions().stream().map(Description::toString)
.collect(Collectors.joining(StringUtil.newLine())));
throw new PitHelpError(Help.FAILING_TESTS, coverage.getCountFailedTests());
}
}
private void gatherCoverageData(List tests,
final CoverageData coverage) throws IOException, InterruptedException {
final Consumer handler = resultProcessor(coverage);
final SocketFinder sf = new SocketFinder();
final ServerSocket socket = sf.getNextAvailableServerSocket();
final CoverageProcess process = new CoverageProcess(ProcessArgs
.withClassPath(this.code.getClassPath()).andBaseDir(this.workingDir)
.andLaunchOptions(this.launchOptions).andStderr(logInfo())
.andStdout(captureStandardOutIfVerbose()), this.coverageOptions,
socket, tests, handler);
process.start();
final ExitCode exitCode = process.waitToDie();
if (exitCode == ExitCode.TEST_PLUGIN_ISSUE) {
LOG.severe("Pitest could not run any tests. Please check that you have installed the pitest plugin for your testing library (eg JUnit 5, TestNG). If your project uses JUnit 4 "
+ "the plugin is automatically included, but a recent version of JUnit 4 must be on the classpath.");
throw new PitError(
"Please check you have correctly installed the pitest plugin for your project's test library (JUnit 5, TestNG, JUnit 4 etc). ");
} else if (!exitCode.isOk()) {
LOG.severe("Coverage generator Minion exited abnormally due to "
+ exitCode);
throw new PitError("Coverage generation minion exited abnormally! (" + exitCode + ")");
} else {
LOG.fine("Coverage generator Minion exited ok");
}
}
private Consumer captureStandardOutIfVerbose() {
if (this.verbosity.showMinionOutput()) {
return log();
} else {
return Prelude.noSideEffect(String.class);
}
}
private static Consumer logInfo() {
return a -> LOG.info("MINION : " + a);
}
private static Consumer log() {
return a -> LOG.fine("MINION : " + a);
}
private Consumer resultProcessor(
final CoverageData coverage) {
return new Consumer() {
private final String[] spinner = new String[] { "\u0008/", "\u0008-",
"\u0008\\", "\u0008|" };
int i = 0;
@Override
public void accept(final CoverageResult cr) {
if (cr.isGreenTest() || !coverageOptions.getPitConfig().skipFailingTests()) {
coverage.calculateClassCoverage(cr);
}
if (DefaultCoverageGenerator.this.verbosity.showSpinner()) {
System.out.printf("%s", this.spinner[this.i % this.spinner.length]);
}
this.i++;
}
};
}
@Override
public TestPluginArguments getConfiguration() {
return this.coverageOptions.getPitConfig();
}
@Override
public LaunchOptions getLaunchOptions() {
return this.launchOptions;
}
}