assimp/test/unit/Common/utAssertHandler.cpp

/*
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Open Asset Import Library (assimp)
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*/

#include "UnitTestPCH.h"

/// Ensure this test has asserts on, even if the build type doesn't have asserts by default.
#if !defined(ASSIMP_BUILD_DEBUG)
#define ASSIMP_BUILD_DEBUG
#endif

#include <assimp/ai_assert.h>
#include <assimp/AssertHandler.h>

namespace
{
    /// An exception which is thrown by the testAssertHandler
    struct TestAssertException
    {
        TestAssertException(const char* failedExpression, const char* file, int line)
            : m_failedExpression(failedExpression)
            , m_file(file)
            , m_line(line)
        {
        }

        std::string m_failedExpression;
        std::string m_file;
        int m_line;
    };

    /// Swap the default handler, which aborts, by one which throws.
    void testAssertHandler(const char* failedExpression, const char* file, int line)
    {
        throw TestAssertException(failedExpression, file, line);
    }

    /// Ensure that the default assert handler is restored after the test is finished.
    struct ReplaceHandlerScope
    {
        ReplaceHandlerScope()
        {
            Assimp::setAiAssertHandler(testAssertHandler);
        }

        ~ReplaceHandlerScope()
        {
            Assimp::setAiAssertHandler(Assimp::defaultAiAssertHandler);
        }
    };
}

TEST(utAssertHandler, replaceWithThrow)
{
    ReplaceHandlerScope scope;

    try
    {
        ai_assert((2 + 2 == 5) && "Sometimes people put messages here");
        EXPECT_TRUE(false);
    }
    catch(const TestAssertException& e)
    {
        EXPECT_STREQ(e.m_failedExpression.c_str(), "(2 + 2 == 5) && \"Sometimes people put messages here\"");
        EXPECT_STREQ(e.m_file.c_str(), __FILE__);
        EXPECT_GT(e.m_line, 0);
        EXPECT_LT(e.m_line, __LINE__);
    }
    catch(...)
    {
        EXPECT_TRUE(false);
    }
}