catch2/tests/SelfTest/UsageTests/Class.tests.cpp

//              Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
//   (See accompanying file LICENSE_1_0.txt or copy at
//        https://www.boost.org/LICENSE_1_0.txt)

// SPDX-License-Identifier: BSL-1.0

#include <catch2/catch_test_macros.hpp>
#include <catch2/catch_template_test_macros.hpp>
#include <array>

namespace {

    class TestClass {
        std::string s;

    public:
        TestClass(): s( "hello" ) {}

        void succeedingCase() { REQUIRE( s == "hello" ); }
        void failingCase() { REQUIRE( s == "world" ); }
    };

    struct Fixture {
        Fixture(): m_a( 1 ) {}

        int m_a;
    };

    template <typename T> struct Template_Fixture {
        Template_Fixture(): m_a( 1 ) {}

        T m_a;
    };

    template <typename T> struct Template_Fixture_2 {
        Template_Fixture_2() {}

        T m_a;
    };

    template <typename T> struct Template_Foo {
        size_t size() { return 0; }
    };

    template <typename T, size_t V> struct Template_Foo_2 {
        size_t size() { return V; }
    };

    template <int V> struct Nttp_Fixture { int value = V; };

} // end unnamed namespace

METHOD_AS_TEST_CASE( TestClass::succeedingCase, "A METHOD_AS_TEST_CASE based test run that succeeds", "[class]" )
METHOD_AS_TEST_CASE( TestClass::failingCase, "A METHOD_AS_TEST_CASE based test run that fails", "[.][class][failing]" )

TEST_CASE_METHOD( Fixture, "A TEST_CASE_METHOD based test run that succeeds", "[class]" )
{
    REQUIRE( m_a == 1 );
}

TEMPLATE_TEST_CASE_METHOD(Template_Fixture, "A TEMPLATE_TEST_CASE_METHOD based test run that succeeds", "[class][template]", int, float, double) {
    REQUIRE( Template_Fixture<TestType>::m_a == 1 );
}

TEMPLATE_TEST_CASE_METHOD_SIG(Nttp_Fixture, "A TEMPLATE_TEST_CASE_METHOD_SIG based test run that succeeds", "[class][template][nttp]",((int V), V), 1, 3, 6) {
    REQUIRE(Nttp_Fixture<V>::value > 0);
}

TEMPLATE_PRODUCT_TEST_CASE_METHOD(Template_Fixture_2, "A TEMPLATE_PRODUCT_TEST_CASE_METHOD based test run that succeeds","[class][template][product]",(std::vector,Template_Foo),(int,float))
{
    REQUIRE( Template_Fixture_2<TestType>::m_a.size() == 0 );
}

TEMPLATE_PRODUCT_TEST_CASE_METHOD_SIG(Template_Fixture_2, "A TEMPLATE_PRODUCT_TEST_CASE_METHOD_SIG based test run that succeeds", "[class][template][product][nttp]", ((typename T, size_t S), T, S),(std::array, Template_Foo_2), ((int,2), (float,6)))
{
    REQUIRE(Template_Fixture_2<TestType>{}.m_a.size() >= 2);
}

using MyTypes = std::tuple<int, char, double>;
TEMPLATE_LIST_TEST_CASE_METHOD(Template_Fixture, "Template test case method with test types specified inside std::tuple", "[class][template][list]", MyTypes)
{
    REQUIRE( Template_Fixture<TestType>::m_a == 1 );
}

// We should be able to write our tests within a different namespace
namespace Inner
{
    TEST_CASE_METHOD( Fixture, "A TEST_CASE_METHOD based test run that fails", "[.][class][failing]" )
    {
        REQUIRE( m_a == 2 );
    }

    TEMPLATE_TEST_CASE_METHOD(Template_Fixture,"A TEMPLATE_TEST_CASE_METHOD based test run that fails", "[.][class][template][failing]", int, float, double)
    {
        REQUIRE( Template_Fixture<TestType>::m_a == 2 );
    }

    TEMPLATE_TEST_CASE_METHOD_SIG(Nttp_Fixture, "A TEMPLATE_TEST_CASE_METHOD_SIG based test run that fails", "[.][class][template][nttp][failing]", ((int V), V), 1, 3, 6) {
        REQUIRE(Nttp_Fixture<V>::value == 0);
    }

    TEMPLATE_PRODUCT_TEST_CASE_METHOD(Template_Fixture_2, "A TEMPLATE_PRODUCT_TEST_CASE_METHOD based test run that fails","[.][class][template][product][failing]",(std::vector,Template_Foo),(int,float))
    {
        REQUIRE( Template_Fixture_2<TestType>::m_a.size() == 1 );
    }

    TEMPLATE_PRODUCT_TEST_CASE_METHOD_SIG(Template_Fixture_2, "A TEMPLATE_PRODUCT_TEST_CASE_METHOD_SIG based test run that fails", "[.][class][template][product][nttp][failing]", ((typename T, size_t S), T, S), (std::array, Template_Foo_2), ((int, 2), (float, 6)))
    {
        REQUIRE(Template_Fixture_2<TestType>{}.m_a.size() < 2);
    }
}