From 0157e52c00ef35c0ffba5d986a397106ab544eca Mon Sep 17 00:00:00 2001
From: Felix Gruber <gruber@igpm.rwth-aachen.de>
Date: Tue, 25 Oct 2016 11:51:50 +0200
Subject: [PATCH] [test] add test for genericTransformTuple
This test fails for now, as genericTransformTuple does not work on
const tuples at the moment.
---
dune/common/test/tupleutilitytest.cc | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/dune/common/test/tupleutilitytest.cc b/dune/common/test/tupleutilitytest.cc
index c91c7a1f7..e94cd9ecf 100644
--- a/dune/common/test/tupleutilitytest.cc
+++ b/dune/common/test/tupleutilitytest.cc
@@ -5,7 +5,9 @@
#include "config.h"
#endif
+#include <cmath>
#include <cstddef>
+#include <iostream>
#include <dune/common/tuples.hh>
#include <dune/common/tupleutility.hh>
@@ -142,5 +144,28 @@ typedef std::tuple<
static_assert((std::is_same<Primes1, Primes2>::value),
"ReduceTuple failed in primes-tmp!");
+struct Reciprocal
+{
+ template<class>
+ struct TypeEvaluator
+ {
+ typedef double Type;
+ };
+ template<class T>
+ typename TypeEvaluator<T>::Type operator()(const T& val) const {
+ return 1./val;
+ };
+};
-int main() {}
+int main() {
+ const std::tuple<int, double> t1(1, 2.);
+ auto t2 = Dune::genericTransformTuple(t1, Reciprocal());
+ static_assert(std::is_same<decltype(t2), std::tuple<double, double>>::value,
+ "Type after genericTransformTuple does not match!");
+ if(fabs(std::get<0>(t2)-1.) > 1e-8 ||
+ fabs(std::get<1>(t2)-.5) > 1e-8)
+ {
+ std::cout << "genericTransformTuple gives wrong result!\n";
+ std::abort();
+ }
+}
--
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