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• 1.2.4
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• PitestTask.groovy

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info.solidsoft.gradle.pitest.PitestTask.groovy Maven / Gradle / Ivy

/* Copyright (c) 2012 Marcin Zajączkowski
 * All rights reserved.
 *
 * 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 info.solidsoft.gradle.pitest

import groovy.transform.CompileStatic
import groovy.transform.PackageScope
import org.gradle.api.file.FileCollection
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.JavaExec
import org.gradle.api.tasks.Optional
import org.gradle.api.tasks.OutputDirectory
import org.gradle.api.tasks.OutputFile

/**
 * Gradle task implementation for Pitest.
 */
@CompileStatic
class PitestTask extends JavaExec {

    @OutputDirectory
    File reportDir

    @Input
    Set targetClasses

    @Input
    @Optional
    Set targetTests

    @Input
    @Optional
    Integer dependencyDistance

    @Input
    @Optional
    Integer threads

    @Input
    @Optional
    Boolean mutateStaticInits

    @Input
    @Optional
    Boolean includeJarFiles

    @Input
    @Optional
    Set mutators

    @Input
    @Optional
    Set excludedMethods

    @Input
    @Optional
    Set excludedClasses

    @Input
    @Optional
    Set avoidCallsTo

    @Input
    @Optional
    Boolean verbose

    @Input
    @Optional
    BigDecimal timeoutFactor

    @Input
    @Optional
    Integer timeoutConstInMillis

    @Input
    @Optional
    Integer maxMutationsPerClass

    @Input
    @Optional
    List childProcessJvmArgs

    @Input
    @Optional
    Set outputFormats

    @Input
    @Optional
    Boolean failWhenNoMutations

    @Input
    @Optional
    Set includedGroups

    @Input
    @Optional
    Set excludedGroups

    @InputFiles
    Set sourceDirs

    @Input
    @Optional
    Boolean detectInlinedCode

    @Input
    @Optional
    Boolean timestampedReports

    @InputFiles
    FileCollection additionalClasspath    //"classpath" is already defined internally in ExecTask

    @Input
    Boolean useAdditionalClasspathFile

    @Input
    @OutputFile
    File additionalClasspathFile

    @InputFiles
    Set mutableCodePaths

    @Input
    @Optional
    File historyInputLocation

    @OutputFile
    @Optional
    File historyOutputLocation

    @Input
    @Optional
    Boolean enableDefaultIncrementalAnalysis

    @Input
    File defaultFileForHistoryData

    @Input
    @Optional
    Integer mutationThreshold

    @Input
    @Optional
    Integer coverageThreshold

    @Input
    @Optional
    String mutationEngine

    @Input
    @Optional
    Boolean exportLineCoverage

    @Input
    @Optional
    File jvmPath

    @Input
    @Optional
    List mainProcessJvmArgs

    @Input
    FileCollection launchClasspath

    @Input
    @Optional
    Map pluginConfiguration

    @Input
    @Optional
    Integer maxSurviving

    @Input
    @Optional
    List features

    @Override
    void exec() {
        //Workaround for compatibility with Gradle <4.0 due to setArgs(List) and setJvmArgs(List) added in Gradle 4.0
        args = createListOfAllArgumentsForPit()
        jvmArgs = (getMainProcessJvmArgs() ?: getJvmArgs())
        main = "org.pitest.mutationtest.commandline.MutationCoverageReport"
        classpath = getLaunchClasspath()
        super.exec()
    }

    private List createListOfAllArgumentsForPit() {
        Map taskArgumentsMap = createTaskArgumentMap()
        List argsAsList = createArgumentsListFromMap(taskArgumentsMap)
        List multiValueArgsAsList = createMultiValueArgsAsList()
        return concatenateTwoLists(argsAsList, multiValueArgsAsList)
    }

    @PackageScope   //visible for testing
    Map createTaskArgumentMap() {
        Map map = [:]
        map['sourceDirs'] = (getSourceDirs()*.path)?.join(',')
        map['reportDir'] = getReportDir().toString()
        map['targetClasses'] = getTargetClasses().join(',')
        map['targetTests'] = getTargetTests()?.join(',')
        map['dependencyDistance'] = getDependencyDistance()?.toString()
        map['threads'] = getThreads()?.toString()
        map['mutateStaticInits'] = getMutateStaticInits()?.toString()
        map['includeJarFiles'] = getIncludeJarFiles()?.toString()
        map["mutators"] = getMutators()?.join(',')
        map['excludedMethods'] = getExcludedMethods()?.join(',')
        map['excludedClasses'] = getExcludedClasses()?.join(',')
        map['avoidCallsTo'] = getAvoidCallsTo()?.join(',')
        map['verbose'] = getVerbose()?.toString()
        map['timeoutFactor'] = getTimeoutFactor()?.toString()
        map['timeoutConst'] = getTimeoutConstInMillis()?.toString()
        map['maxMutationsPerClass'] = getMaxMutationsPerClass()?.toString()
        map['jvmArgs'] = getChildProcessJvmArgs()?.join(',')
        map['outputFormats'] = getOutputFormats()?.join(',')
        map['failWhenNoMutations'] = getFailWhenNoMutations()?.toString()
        map['mutableCodePaths'] = (getMutableCodePaths()*.path)?.join(',')
        map['includedGroups'] = getIncludedGroups()?.join(',')
        map['excludedGroups'] = getExcludedGroups()?.join(',')
        map['detectInlinedCode'] = getDetectInlinedCode()?.toString()
        map['timestampedReports'] = getTimestampedReports()?.toString()
        map['mutationThreshold'] = getMutationThreshold()?.toString()
        map['coverageThreshold'] = getCoverageThreshold()?.toString()
        map['mutationEngine'] = getMutationEngine()
        map['exportLineCoverage'] = getExportLineCoverage()?.toString()
        map['includeLaunchClasspath'] = Boolean.FALSE.toString()   //code to analyse is passed via classPath
        map['jvmPath'] = getJvmPath()?.path
        map['maxSurviving'] = getMaxSurviving()?.toString()
        map['features'] = getFeatures()?.join(',')
        map.putAll(prepareMapWithClasspathConfiguration())
        map.putAll(prepareMapWithIncrementalAnalysisConfiguration())

        return removeEntriesWithNullValue(map)
    }

    private Map prepareMapWithClasspathConfiguration() {
        if (getUseAdditionalClasspathFile()) {
            fillAdditionalClasspathFileWithClasspathElements()
            return [classPathFile: getAdditionalClasspathFile().absolutePath]
        } else {
            return [classPath: getAdditionalClasspath().files.join(',')]
        }
    }

    private void fillAdditionalClasspathFileWithClasspathElements() {
        String classpathElementsAsFileContent = getAdditionalClasspath().files.collect { it.getAbsolutePath() }.join(System.lineSeparator())
        //"withWriter" as "file << content" works in append mode (instead of overwrite one)
        getAdditionalClasspathFile().withWriter() {
            it << classpathElementsAsFileContent
        }
    }

    private Map prepareMapWithIncrementalAnalysisConfiguration() {
        if (getEnableDefaultIncrementalAnalysis()) {
            return [historyInputLocation : getHistoryInputLocation()?.path ?: getDefaultFileForHistoryData().path,
                    historyOutputLocation: getHistoryOutputLocation()?.path ?: getDefaultFileForHistoryData().path]
        } else {
            return [historyInputLocation: getHistoryInputLocation()?.path,
                    historyOutputLocation: getHistoryOutputLocation()?.path]
        }
    }

    private Map removeEntriesWithNullValue(Map map) {
        return map.findAll { it.value != null }
    }

    private List createArgumentsListFromMap(Map taskArgumentsMap) {
        return taskArgumentsMap.collect { k, v ->
            "--$k=$v".toString()
        }
    }

    @PackageScope   //visible for testing
    List createMultiValueArgsAsList() {
        //It is a duplication/special case handling, but a PoC implementation with emulated multimap was also quite ugly and in addition error prone
        return getPluginConfiguration()?.collect { k, v ->
            "$k=$v".toString()
        }?.collect {
            "--pluginConfiguration=$it".toString()
        } ?: [] as List
    }

    //Workaround to keep compatibility with Gradle <2.8
    //[] + [] is compiled in Groovy 2.4.x as "List plus(List left, Collection right)" which is unavailable in Groovy 2.3 and fails with Gradle <2.8
    private List concatenateTwoLists(List argsAsList, List multiValueArgsAsList) {
        List allArgs = []
        allArgs.addAll(argsAsList)
        allArgs.addAll(multiValueArgsAsList)
        return allArgs
    }
}