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> ###
> ### polyarea.R  +++ Test suite +++
> ###
> 
> 
> test.polyarea <- function(input, expected) {
+    output <- do.call(getFromNamespace("polyarea", "pracma"), input)
+    identical(output, expected)
+ }
> 
> polyarea.expected.empty <- 0
> polyarea.expected.gen1 <- 3.5
> polyarea.expected.gen2 <- 4
> polyarea.expected.mtrx <- c(4, 4)
> polyarea.expected.cmpl <- 0.5
> 
> test.polyarea(list(x=c(), y=c()), polyarea.expected.empty)
[1] TRUE
> test.polyarea(list(x=c(0,2,2,1,0), y=c(0,-1,2,1,1)), polyarea.expected.gen1)
[1] TRUE
> test.polyarea(list(x=matrix(c(1,1,3,3,1), 5, 1),
+                    y=matrix(c(1,3,3,1,1), 5, 1)),
+               polyarea.expected.gen2)
[1] FALSE
> test.polyarea(list(x=matrix(c(1,3,3,1,1,1,3,3), 4, 2),
+                    y=matrix(c(1,1,3,3,1,3,3,1), 4, 2)),
+               polyarea.expected.mtrx)
[1] FALSE
> test.polyarea(list(x=c(0,1,1,0), y=c(0,0,1i,0)), polyarea.expected.cmpl)
[1] FALSE
> 
> proc.time()
   user  system elapsed 
   0.15    0.04    0.18