how to check now test Case status?? if its field or not.

hi how to check if testCase from testSuite.testCaseList  if failed or not

import groovy.*

def testCaseList = testRunner.testCase.testSuite.getTestCaseList()

for(testCase in testCaseList)
{
??????????????

how to check if testCase from testSuite.testCaseList  if failed or not
}