catch2/tests/ExtraTests/X02-DisabledMacros.cpp

// X02-DisabledMacros.cpp
// Test that CATCH_CONFIG_DISABLE turns off TEST_CASE autoregistration
// and expressions in assertion macros are not run.

#include <catch2/catch_test_macros.hpp>
#include <catch2/benchmark/catch_benchmark.hpp>
#include <catch2/matchers/catch_matchers.hpp>
#include <catch2/matchers/catch_matchers_predicate.hpp>

#include <iostream>

struct foo {
    foo(){
        REQUIRE_NOTHROW( print() );
    }
    void print() const {
        std::cout << "This should not happen\n";
    }
};

#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wglobal-constructors"
#endif
// Construct foo, but `foo::print` should not be run
foo f;


#if defined(__clang__)
// The test is unused since the registration is disabled
#pragma clang diagnostic ignored "-Wunused-function"
#endif

// This test should not be run, because it won't be registered
TEST_CASE( "Disabled Macros" ) {
    CHECK( 1 == 2 );
    REQUIRE( 1 == 2 );
    std::cout << "This should not happen\n";
    FAIL();

    // Test that static assertions don't fire when macros are disabled
    STATIC_CHECK( 0 == 1 );
    STATIC_REQUIRE( !true );

    REQUIRE_THAT( 1,
                  Catch::Matchers::Predicate( []( int ) { return false; } ) );
    BENCHMARK( "Disabled benchmark" ) { REQUIRE( 1 == 2 ); };
}

#if defined(__clang__)
#pragma clang diagnostic pop
#endif