when:
        report.generateReport(testResultProvider, reportDir)

        then:
        def index = results(indexFile)
        index.assertHasTests(0)
        index.assertHasFailures(0)
        index.assertHasIgnored(0)
        index.assertHasNoDuration()
        index.assertHasNoSuccessRate()
        index.assertHasNoNavLinks()
    }