In this scenario, two additional pieces of setup are necessary:

<1> Declare dependencies using the `testReportAggregation` configuration
<2> Define a report of type `AggregateTestReport` which collects test data from unit test suites
<3> Optional: make aggregate test report generation part of the 'check' lifecycle phase

[cols="a,a", options="header"]
|===
| Name
| Meaning

| `testReportAggregation`
| The configuration used to declare all project dependencies having test result data to be aggregated.
| `aggregateTestReportResults`
| Consumes the project dependencies from the `testReportAggregation` configuration using <<variant_model#sec:variant-aware-matching,variant-aware matching>> to find the appropriate test suite type.

plugins {
    id 'base'
    id 'test-report-aggregation'
}

dependencies {
    testReportAggregation project(':application') // <.>
}

// tag::create_report[]
reporting {
    reports {
        testAggregateTestReport(AggregateTestReport) { // <.>
            testType = TestSuiteType.UNIT_TEST
        }
    }
}
// end::create_report[]

tasks.named('check') {

plugins {
    base
    id("test-report-aggregation")
}

dependencies {
    testReportAggregation(project(":application")) // <.>
}

// tag::create_report[]
reporting {
    reports {
        val testAggregateTestReport by creating(AggregateTestReport::class) { // <.>
            testType = TestSuiteType.UNIT_TEST
        }
    }
}
// end::create_report[]

tasks.check {

        given:
        buildFile << '''
            apply plugin: 'org.gradle.test-report-aggregation'

            dependencies {
                testReportAggregation project(":application")
                testReportAggregation project(":direct")
            }

            reporting {
                reports {
                    testAggregateTestReport(AggregateTestReport) {

 */
@Incubating
public abstract class TestReportAggregationPlugin implements Plugin<Project> {

    public static final String TEST_REPORT_AGGREGATION_CONFIGURATION_NAME = "testReportAggregation";

    @Inject
    protected abstract JvmPluginServices getJvmPluginServices();

    @Override
    public void apply(Project project) {
        project.getPluginManager().apply("org.gradle.reporting-base");