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#include <UnitTest++/UnitTest++.h>
#include <UnitTest++/ReportAssert.h>

#include <vector>

// These are sample tests that show the different features of the framework

namespace {

TEST(ValidCheckSucceeds)
{
    bool const b = true;
    CHECK(b);
}

TEST(CheckWorksWithPointers)
{
    void* p = (void *)0x100;
    CHECK(p);
    CHECK(p != 0);
}

TEST(ValidCheckEqualSucceeds)
{
    int const x = 3;
    int const y = 3;
    CHECK_EQUAL(x, y);
}

TEST(CheckEqualWorksWithPointers)
{
    void* p = (void *)0;
    CHECK_EQUAL ((void*)0, p);
}

TEST(ValidCheckCloseSucceeds)
{
    CHECK_CLOSE(2.0f, 2.001f, 0.01f);
    CHECK_CLOSE(2.001f, 2.0f, 0.01f);
}

TEST(ArrayCloseSucceeds)
{
    float const a1[] = {1, 2, 3};
    float const a2[] = {1, 2.01f, 3};
    CHECK_ARRAY_CLOSE (a1, a2, 3, 0.1f);
}

TEST (CheckArrayCloseWorksWithVectors)
{
    std::vector< float > a(4);
    for (int i = 0; i < 4; ++i)
        a[i] = (float)i;

    CHECK_ARRAY_CLOSE (a, a, (int)a.size(), 0.0001f);
}

TEST(CheckThrowMacroSucceedsOnCorrectException)
{
    struct TestException {};
    CHECK_THROW(throw TestException(), TestException);
}

TEST(CheckAssertSucceeds)
{
    CHECK_ASSERT(UnitTest::ReportAssert("desc", "file", 0));
}

TEST(CheckThrowMacroFailsOnMissingException)
{
    class NoThrowTest : public UnitTest::Test
    {
    public:
        NoThrowTest() : Test("nothrow") {}
        void DontThrow() const
        {
        }

        virtual void RunImpl(UnitTest::TestResults& testResults_) const
        {
            CHECK_THROW(DontThrow(), int);
        }
    };

    UnitTest::TestResults results;

    NoThrowTest const test;
    test.Run(results);
    CHECK_EQUAL(1, results.GetFailureCount());
}

TEST(CheckThrowMacroFailsOnWrongException)
{
    class WrongThrowTest : public UnitTest::Test
    {
    public:
        WrongThrowTest() : Test("wrongthrow") {}
        virtual void RunImpl(UnitTest::TestResults& testResults_) const
        {
            CHECK_THROW(throw "oops", int);
        }
    };

    UnitTest::TestResults results;

    WrongThrowTest const test;
    test.Run(results);
    CHECK_EQUAL(1, results.GetFailureCount());
}

struct SimpleFixture
{
    SimpleFixture()
    {
        ++instanceCount;
    }
    ~SimpleFixture()
    {
        --instanceCount;
    }

    static int instanceCount;
};

int SimpleFixture::instanceCount = 0;

TEST_FIXTURE(SimpleFixture, DefaultFixtureCtorIsCalled)
{
    CHECK(SimpleFixture::instanceCount > 0);
}

TEST_FIXTURE(SimpleFixture, OnlyOneFixtureAliveAtATime)
{
    CHECK_EQUAL(1, SimpleFixture::instanceCount);
}

}