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> ################################################################################
> ##
> ## $Id: portfolio.expose.test.R 406 2007-04-19 16:30:22Z enos $
> ##
> ## Tests the expose method of class portfolio.
> ##
> ################################################################################
> 
> library(portfolio)
Loading required package: grid
Loading required package: lattice
> 
> load("portfolio.expose.test.RData")
> 
> ## save(test.portfolio, test.trades, empty.trades, bad.1, bad.2, bad.3, bad.4, truth, file = "portfolio.expose.test.RData", compress = TRUE)
> 
> result.1 <- expose(test.portfolio, test.trades)
> result.1 <- calcWeights(result.1)
> 
> result.2 <- expose(test.portfolio, empty.trades)
> result.2 <- calcWeights(result.2)
> 
> stopifnot(
+           all.equal(result.1, truth),
+           all.equal(result.2, test.portfolio)
+           )
Warning messages:
1: In validityMethod(as(object, superClass)) :
  The securities with the following id's have weights but no data in the data slot: l
2: In validityMethod(as(object, superClass)) :
  The securities with the following id's have weights but no data in the data slot: kThe securities with the following id's have weights but no data in the data slot: l
> 
> 
> ## Try to sell when you are shorting
> 
> trial.1 <- try(
+                expose(test.portfolio, bad.1), silent = TRUE
+                )
> 
> stopifnot(
+           inherits(trial.1, "try-error"),
+           as.logical(grep("Illegal trades found", trial.1[1]))
+           )
> 
> ## Try to short when you are already longing
> 
> trial.2 <- try(
+                expose(test.portfolio, bad.2), silent = TRUE
+                )
> 
> stopifnot(
+           inherits(trial.2, "try-error"),
+           as.logical(grep("Illegal trades found", trial.2[1]))
+           )
> 
> ## Try to cover more than you are shorting
> 
> trial.3 <- try(
+                expose(test.portfolio, bad.3), silent = TRUE
+                )
> 
> stopifnot(
+           inherits(trial.3, "try-error"),
+           as.logical(grep("Illegal trades found", trial.3[1]))
+           )
> 
> ## Try a side change, from long to short, without selling all your holdings
> 
> trial.4 <- try(
+                expose(test.portfolio, bad.4), silent = TRUE
+                )
> 
> stopifnot(
+           inherits(trial.4, "try-error"),
+           as.logical(grep("Illegal trades found", trial.4[1]))
+           )
> 
> proc.time()
   user  system elapsed 
   0.73    0.07    0.79