coffee/googletest
1
0
Fork 0
mirror of https://github.com/google/googletest.git synced 2025-12-11 22:20:00 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add test case for object with templated PrintTo on generic type

Browse Source 
When PrintTo is defined on a set of types which are accepted with a compile time predicate (using SFINAE), the current implementation fails to compile due to an ambiguous error.
This commit is contained in:
MakersF 2021-12-05 16:54:38 +00:00
parent ae90305ed5
commit 10da596ac9
1 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
googletest/test/googletest-printers-test.cc
View File

@ -85,6 +85,15 @@ void PrintTo(EnumWithPrintTo e, std::ostream* os) {
*os << (e == kEWPT1 ? "kEWPT1" : "invalid");
}
struct StructWithSFINAETemplatePrintToInGlobal {};
template <typename T,
typename = typename std::enable_if<std::is_same<
T, StructWithSFINAETemplatePrintToInGlobal>::value>::type>
void PrintTo(const T& obj, std::ostream* os) {
*os << "StructWithSFINAETemplatePrintToInGlobal";
}
// A class implicitly convertible to BiggestInt.
class BiggestIntConvertible {
public:
@ -173,6 +182,15 @@ void PrintTo(const PrintableViaPrintToTemplate<T>& x, ::std::ostream* os) {
*os << "PrintableViaPrintToTemplate: " << x.value();
}
struct StructWithSFINAETemplatePrintToInFoo {};
template <typename T,
typename = typename std::enable_if<std::is_same<
T, StructWithSFINAETemplatePrintToInFoo>::value>::type>
void PrintTo(const T& obj, std::ostream* os) {
*os << "StructWithSFINAETemplatePrintToInFoo";
}
// A user-defined streamable class template in a user namespace.
template <typename T>
class StreamableTemplateInFoo {
@ -1292,6 +1310,16 @@ TEST(PrintReferenceWrapper, Unprintable) {
Print(std::cref(up)));
}
TEST(PrintPrintableTypeWithSfinaePrintTo, InGlobalNamespace) {
EXPECT_EQ("StructWithSFINAETemplatePrintToInGlobal",
Print(StructWithSFINAETemplatePrintToInGlobal()));
}
TEST(PrintPrintableTypeWithSfinaePrintTo, InFooNamespace) {
EXPECT_EQ("StructWithSFINAETemplatePrintToInFoo",
Print(StructWithSFINAETemplatePrintToInFoo()));
}
// Tests printing user-defined unprintable types.
// Unprintable types in the global namespace.