Parent filter copied from Android Support test library

ParentFilter.kt

package com.stepstone.base.test.runner.filter


import org.junit.runner.Description
import org.junit.runner.manipulation.Filter

/**
 * Helper parent class for [Filter] that allows suites to run if any child matches.
 */
abstract class ParentFilter : Filter() {

    /**
     * {@inheritDoc}
     */
    override fun shouldRun(description: Description): Boolean {
        if (description.isTest) {
            return evaluateTest(description)
        }
        // this is a suite, explicitly check if any children should run
        // no children to run, filter this out
        return description.children.any { shouldRun(it) }
    }

    /**
     * Determine if given test description matches filter.
     *
     * @param description the [Description] describing the test
     * @return `true` if matched
     */
    protected abstract fun evaluateTest(description: Description): Boolean
}