expected <- TRUE    
test(id=10, code={    
argv <- structure(list(x = structure(c(1412799280.04908, 1412799280.04908    
), class = c("POSIXct", "POSIXt")), what = "POSIXt"), .Names = c("x",     
"what"))    
do.call('inherits', argv);    
},  o = expected);    
    
