On Android studio when running './gradlew build'  from terminal. 
test QtBuildTask exec with failing input will fail.
Output: 

> Task :test

QtBuildTaskTest > test QtBuildTask exec with failing input FAILED // on windows, linux and mac
    org.spockframework.runtime.WrongExceptionThrownError at QtBuildTaskTest.groovy:77
        Caused by: java.io.IOException at QtBuildTaskTest.groovy:74
            Caused by: java.io.IOException at QtBuildTaskTest.groovy:74

QtBuildTaskTest > test QtBuildTask exec with valid input FAILED  // only on windows
    java.io.IOException at QtBuildTaskTest.groovy:85
        Caused by: java.io.IOException at QtBuildTaskTest.groovy:85

10 tests completed, 2 failed

> Task :test FAILED

FAILURE: Build failed with an exception.