Laconic test output for gradle

test.groovy

test {
    testLogging {
        events 'skipped', 'failed'
        exceptionFormat = 'full'
    }

    beforeSuite { suite ->
        if (suite.className != null) {
            println()
            println(suite.className)
        }
    }
    afterTest { desc, result ->
        def c = '.'
        if (result.resultType == TestResult.ResultType.FAILURE) {
            c = 'X'
        } else if (result.resultType == TestResult.ResultType.SKIPPED) {
            c = 'S'
        }
        print(c)
        System.out.flush()
    }
    afterSuite { println() }
}