# Contributing to the Gradle Build Tool

Thank you for your interest in contributing to Gradle!
This guide explains how to contribute to the core Gradle components, 
extensions and documentation located in this repository.
For other extensions and components, see the 
[Gradle Community Resources](https://gradle.org/resources/).

This guide will help you to...

* maximize the chance of your changes being accepted
* work on the Gradle code base

 *
 * @param historyDays days number of days to store build history .
 * @param artifactsDays number of days to store artifacts. In the stored history, artifacts older than this number will be cleaned up.
 * @param artifactPatterns patterns for artifacts clean-up. If not specified, all artifacts will be removed.
 */

val Project.testDistributionEnabled: Boolean
    get() = systemProperty(TEST_DISTRIBUTION_ENABLED).orNull?.toBoolean() == true


// Controls the test distribution partition size. The test classes smaller than this value will be merged into a "partition"
val Project.maxTestDistributionPartitionSecond: Long?
    get() = systemProperty(TEST_DISTRIBUTION_PARTITION_SIZE).orNull?.toLong()


val Project.maxParallelForks: Int

    val durationsPerTestProject = projectDurations.groupBy({ it.testProject }, { it.scenarioDurations })
    durationsPerTestProject.forEach { (key, value) -> if (value.size != 1) throw IllegalArgumentException("More than one scenario split for test project $key: $projectDurations") }
    return durationsPerTestProject
        .mapValues { (_, durations) -> durations.flatten().map { it.scenario } }
}