------------------------------------------------------------
revno: 3125
committer: poy <p...@123gen.com>
branch nick: trunk
timestamp: Sat 2012-11-10 16:40:59 +0100
message:
add a SFINAE test
added:
test/testsfinae.cpp
--
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=== added file 'test/testsfinae.cpp'
--- test/testsfinae.cpp 1970-01-01 00:00:00 +0000
+++ test/testsfinae.cpp 2012-11-10 15:40:59 +0000
@@ -0,0 +1,64 @@
+// Make sure some of the clever SFINAE used by DC++ is working as expected on the current compiler.
+
+#include "testbase.h"
+
+#include <dcpp/Util.h>
+
+using namespace dcpp;
+
+struct Funcs {
+ void f1() { }
+ void f2(int) { }
+ int f3() { return 0; }
+ void f4(const string&) { }
+};
+
+template<typename T>
+struct X {
+ // these should be true.
+ HAS_FUNC(F1, void, f1());
+ HAS_FUNC(F2, void, f2(0));
+ HAS_FUNC(F3, int, f3());
+ HAS_FUNC(F4, void, f4(string()));
+
+ // these should be false.
+ HAS_FUNC(FN1, void, lol());
+ HAS_FUNC(FN2, bool, f1());
+ HAS_FUNC(FN3, bool, f3());
+
+ bool test_F1() { return F1<T>::value; }
+ bool test_F2() { return F2<T>::value; }
+ bool test_F3() { return F3<T>::value; }
+ bool test_F4() { return F4<T>::value; }
+
+ bool test_FN1() { return FN1<T>::value; }
+ bool test_FN2() { return FN2<T>::value; }
+ bool test_FN3() { return FN3<T>::value; }
+
+ bool i() {
+ return i1();
+ }
+
+ template<typename U = T> typename std::enable_if<F1<U>::value, bool>::type i1() { return true; }
+ template<typename U = T> typename std::enable_if<!F1<U>::value, bool>::type i1() { return false; }
+};
+
+TEST(testsfinae, test_has_func)
+{
+ X<Funcs> x;
+
+ ASSERT_EQ(true, x.test_F1());
+ ASSERT_EQ(true, x.test_F2());
+ ASSERT_EQ(true, x.test_F3());
+ ASSERT_EQ(true, x.test_F4());
+
+ ASSERT_EQ(false, x.test_FN1());
+#ifndef _MSC_VER
+ /* TODO these tests ensure that the return value of the tested function is correctly validated.
+ doesn't work in MSVC, as explained by the definition of HAS_FUNC. */
+ ASSERT_EQ(false, x.test_FN2());
+ ASSERT_EQ(false, x.test_FN3());
+#endif
+
+ ASSERT_EQ(true, x.i());
+}
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