Gradle Robolectric commandline output formatting

gradle_robolectric_commandline_output_formatting.groovy

//Add this to build.gradle
robolectric {
    // Output and format the test results for vim-grand
    afterTest { descriptor, result ->
        //This part prints the class name with short result notation
        def resultChar = ''
        switch (result.resultType) {
            case TestResult.ResultType.SUCCESS:
                resultChar = '+'
                break
            case TestResult.ResultType.FAILURE:
                resultChar = '-'
                break
            default:
                resultChar = '?'
                break
        }
        
	//Print time taken in ms
	print "(" + ((result.getEndTime() - result.getStartTime()) / 1000) + "ms)\t"
        println "$resultChar $descriptor.className > $descriptor.name"

        //This prints a short stacktrace, ending with the assert description
        if (result.resultType == TestResult.ResultType.FAILURE) {
            result.getException().each {
                it.getStackTrace().each { el ->
                    if (el.getFileName() && !(el.getClassName() =~
                            /^(java.lang|java.util|junit.framework|org.gradle|org.junit|sun.reflect)/)) {
                        println el.getFileName() + ":" + el.getLineNumber() + ":"
                    }
                }
                println it.toString()
            }
	}
    }
}