add failing spec for #851

Author: Filip Schouwenaars

inst/unitTests/cpp/embeddedR2.cpp

@@ -0,0 +1,33 @@
+// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
+//
+// Environment.cpp: Rcpp R/C++ interface class library -- Environment unit tests
+//
+// Copyright (C) 2018 Dirk Eddelbuettel and Romain Francois
+//
+// 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/>.
+
+#include <Rcpp.h>
+using namespace Rcpp ;
+
+// [[Rcpp::export]]
+int bar(){
+    return 42 ;
+}
+
+/*** R
+x <- foo()
+x
+*/

inst/unitTests/runit.embeddedR.R

@@ -18,20 +18,23 @@
 # You should have received a copy of the GNU General Public License
 # along with Rcpp.  If not, see <http://www.gnu.org/licenses/>.
 
-.runThisTest <- TRUE # Sys.getenv("RunAllRcppTests") == "yes"
+.runThisTest <- Sys.getenv("RunAllRcppTests") == "yes"
 
 if (.runThisTest) {
 
     test.embeddedR <- function() {
-
-        path <- system.file("unitTests", package = "Rcpp")
+        path <- file.path(system.file("unitTests", package = "Rcpp"), "cpp")
         expectedVars <- c("foo", "x")
+
+        # embeddedR.cpp exposes the function foo, R snippet calls foo
         newEnv <- new.env()
-        Rcpp::sourceCpp(file.path(path, "cpp", "embeddedR.cpp"), env = newEnv)
-        checkEquals(ls(newEnv), expectedVars, msg = " sourcing code in other env")
+        Rcpp::sourceCpp(file.path(path, "embeddedR.cpp"),
+                        env = newEnv)
+        checkEquals(ls(newEnv), expectedVars, msg = " sourcing code in custom env")
+
+        # R snippet in embeddedR2.cpp also contains a call to foo from previous cpp
+        newEnv2 <- new.env()
+        checkException(Rcpp::sourceCpp(file.path(path, "embeddedR2.cpp"), env = newEnv2),
+                                       " not available in other env")
     }
-
 }
-
-
-