add test for issue #223

Author: wush978

inst/unitTests/runit.sugar.var.R

@@ -0,0 +1,36 @@
+#!/usr/bin/r -t
+#                     -*- mode: R; ess-indent-level: 4; indent-tabs-mode: nil; -*-
+#
+# Copyright (C) 2015 Wush Wu
+#
+# This file is part of Rcpp.
+#
+# Rcpp is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# Rcpp is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Rcpp.  If not, see <http://www.gnu.org/licenses/>.
+
+.runThisTest <- Sys.getenv("RunAllRcppTests") == "yes"
+
+if (.runThisTest) {
+
+    test.Sugar.var <- function() {
+        f1 <- Rcpp::cppFunction('double myVar(NumericVector x) { return(var(x)); }')
+        f2 <- Rcpp::cppFunction('double myVar(IntegerVector x) { return(var(x)); }')
+        f3 <- Rcpp::cppFunction('double myVar(ComplexVector x) { return(var(x)); }')
+        f4 <- Rcpp::cppFunction('double myVar(LogicalVector x) { return(var(x)); }')
+        checkEquals(f1(1:10), var(1:10))
+        checkEquals(f2(1:10), var(1:10))
+        checkEquals(f3(1:10 + (1 + 1i)), var(1:10))
+        checkEquals(f4(c(T, F, T, F, T)), var(c(T, F, T, F, T)))
+    }
+
+}