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Add test for overriding the fallback stringifier

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This commit is contained in:
Martin Hořeňovský 2018-02-15 15:12:19 +01:00
parent bb84f0788a
commit c0267e5c20
6 changed files with 60 additions and 18 deletions
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29
projects/SelfTest/UsageTests/ToStringWhich.tests.cpp
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@ -1,13 +1,25 @@
#include "catch.hpp"
/*
Demonstrate which version of toString/StringMaker is being used
for various types
*/
* Demonstrate which version of toString/StringMaker is being used
* for various types
*/
// Replace fallback stringifier for this TU
// We should avoid ODR violations because these specific types aren't
// present in different TUs
#include <string>
template <typename T>
std::string fallbackStringifier(T const&) {
return "{ !!! }";
}
#define CATCH_CONFIG_FALLBACK_STRINGIFIER fallbackStringifier
#include "catch.hpp"
struct has_operator { };
struct has_maker {};
struct has_maker_and_operator {};
struct has_neither {};
std::ostream& operator<<(std::ostream& os, const has_operator&) {
os << "operator<<( has_operator )";
@ -52,6 +64,12 @@ TEST_CASE( "stringify( has_maker_and_toString )", "[.][toString]" ) {
REQUIRE( ::Catch::Detail::stringify( item ) == "StringMaker<has_maker_and_operator>" );
}
TEST_CASE("stringify( has_neither )", "[toString]") {
has_neither item;
REQUIRE( ::Catch::Detail::stringify(item) == "{ !!! }" );
}
// Vectors...
// Don't run this in approval tests as it is sensitive to two phase lookup differences
@ -65,7 +83,6 @@ TEST_CASE( "toString( vectors<has_maker> )", "[toString]" ) {
REQUIRE( ::Catch::Detail::stringify( v ) == "{ StringMaker<has_maker> }" );
}
// Don't run this in approval tests as it is sensitive to two phase lookup differences
TEST_CASE( "toString( vectors<has_maker_and_operator> )", "[toString]" ) {
std::vector<has_maker_and_operator> v(1);
@ -142,5 +159,5 @@ TEST_CASE("toString streamable range", "[toString]") {
REQUIRE(::Catch::Detail::stringify(streamable_range{}) == "op<<(streamable_range)");
REQUIRE(::Catch::Detail::stringify(stringmaker_range{}) == "stringmaker(streamable_range)");
REQUIRE(::Catch::Detail::stringify(just_range{}) == "{ 1, 2, 3, 4 }");
REQUIRE(::Catch::Detail::stringify(disabled_range{}) == "{?}");
REQUIRE(::Catch::Detail::stringify(disabled_range{}) == "{ !!! }");
}