catch2/tests/SelfTest/UsageTests/Compilation.tests.cpp

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/*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#include <type_traits>
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// Setup for #1403 -- look for global overloads of operator << for classes
// in a different namespace.
#include <ostream>
namespace foo {
struct helper_1403 {
bool operator==(helper_1403) const { return true; }
};
}
namespace bar {
template <typename... Ts>
struct TypeList {};
}
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#ifdef __GNUC__
#pragma GCC diagnostic ignored "-Wmissing-declarations"
#endif
std::ostream& operator<<(std::ostream& out, foo::helper_1403 const&) {
return out << "[1403 helper]";
}
///////////////////////////////
#include <catch2/catch_test_macros.hpp>
#include <catch2/matchers/catch_matchers_string.hpp>
#include <cstring>
namespace { namespace CompilationTests {
#ifndef COMPILATION_TEST_HELPERS_INCLUDED // Don't compile this more than once per TU
#define COMPILATION_TEST_HELPERS_INCLUDED
// Comparison operators can return non-booleans.
// This is unusual, but should be supported.
struct logic_t {
logic_t operator< (logic_t) const { return {}; }
logic_t operator<=(logic_t) const { return {}; }
logic_t operator> (logic_t) const { return {}; }
logic_t operator>=(logic_t) const { return {}; }
logic_t operator==(logic_t) const { return {}; }
logic_t operator!=(logic_t) const { return {}; }
explicit operator bool() const { return true; }
};
// This is a minimal example for an issue we have found in 1.7.0
struct foo {
int i;
};
template<typename T>
bool operator==(const T &val, foo f) {
return val == f.i;
}
struct Y {
uint32_t v : 1;
};
void throws_int(bool b) {
if (b) {
throw 1;
}
}
template<typename T>
bool templated_tests(T t) {
int a = 3;
REQUIRE(a == t);
CHECK(a == t);
REQUIRE_THROWS(throws_int(true));
CHECK_THROWS_AS(throws_int(true), int);
REQUIRE_NOTHROW(throws_int(false));
REQUIRE_THAT("aaa", Catch::Matchers::EndsWith("aaa"));
return true;
}
struct A {
};
std::ostream &operator<<(std::ostream &o, const A &) { return o << 0; }
struct B : private A {
bool operator==(int) const { return true; }
};
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#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-function"
#endif
#ifdef __GNUC__
// Note that because -~GCC~-, this warning cannot be silenced temporarily, by pushing diagnostic stack...
// Luckily it is firing in test files and thus can be silenced for the whole file, without losing much.
#pragma GCC diagnostic ignored "-Wunused-function"
#endif
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B f();
std::ostream g();
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#ifdef __clang__
#pragma clang diagnostic pop
#endif
template <typename, typename>
struct Fixture_1245 {};
#endif
TEST_CASE("#809") {
foo f;
f.i = 42;
REQUIRE(42 == f);
}
// ------------------------------------------------------------------
// Changes to REQUIRE_THROWS_AS made it stop working in a template in
// an unfixable way (as long as C++03 compatibility is being kept).
// To prevent these from happening in the future, this needs to compile
TEST_CASE("#833") {
REQUIRE(templated_tests<int>(3));
}
// Test containing example where original stream insertable check breaks compilation
TEST_CASE("#872") {
A dummy;
CAPTURE(dummy);
B x;
REQUIRE (x == 4);
}
TEST_CASE("#1027") {
Y y{0};
REQUIRE(y.v == 0);
REQUIRE(0 == y.v);
}
// Comparison operators can return non-booleans.
// This is unusual, but should be supported.
TEST_CASE("#1147") {
logic_t t1, t2;
REQUIRE(t1 == t2);
REQUIRE(t1 != t2);
REQUIRE(t1 < t2);
REQUIRE(t1 > t2);
REQUIRE(t1 <= t2);
REQUIRE(t1 >= t2);
}
// unsigned array
TEST_CASE("#1238") {
unsigned char uarr[] = "123";
CAPTURE(uarr);
signed char sarr[] = "456";
CAPTURE(sarr);
REQUIRE(std::memcmp(uarr, "123", sizeof(uarr)) == 0);
REQUIRE(std::memcmp(sarr, "456", sizeof(sarr)) == 0);
}
TEST_CASE_METHOD((Fixture_1245<int, int>), "#1245", "[compilation]") {
SUCCEED();
}
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TEST_CASE("#1403", "[compilation]") {
::foo::helper_1403 h1, h2;
REQUIRE(h1 == h2);
}
TEST_CASE("Optionally static assertions", "[compilation]") {
STATIC_REQUIRE( std::is_void<void>::value );
STATIC_REQUIRE_FALSE( std::is_void<int>::value );
}
TEST_CASE("#1548", "[compilation]") {
using namespace bar;
REQUIRE(std::is_same<TypeList<int>, TypeList<int>>::value);
}
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// #925
using signal_t = void (*) (void*);
struct TestClass {
signal_t testMethod_uponComplete_arg = nullptr;
};
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namespace utility {
inline static void synchronizing_callback( void * ) { }
}
TEST_CASE("#925: comparing function pointer to function address failed to compile", "[!nonportable]" ) {
TestClass test;
REQUIRE(utility::synchronizing_callback != test.testMethod_uponComplete_arg);
}
TEST_CASE( "#1027: Bitfields can be captured" ) {
struct Y {
uint32_t v : 1;
};
Y y{ 0 };
REQUIRE( y.v == 0 );
REQUIRE( 0 == y.v );
}
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TEST_CASE("#1319: Sections can have description (even if it is not saved", "[compilation]") {
SECTION("SectionName", "This is a long form section description") {
SUCCEED();
}
}
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}} // namespace CompilationTests
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