CODEWITHSUNDEEP
c++boostboost-test
Jacob Krieg
Jacob Krieg

Reputation: 3194

Boost Test Error: main already defined

I have a Visual Studio project where I want to do some unit tests with Boost.Test.

And I have 2 files:

File 1:

#define BOOST_TEST_MODULE FileX

#include <boost/test/unit_test.hpp>
#include <stdio.h>

BOOST_AUTO_TEST_SUITE(test_suite_name)

BOOST_AUTO_TEST_CASE(TestFileX)
{
    BOOST_CHECK(true);
}


BOOST_AUTO_TEST_SUITE_END()

And File 2:

#define BOOST_TEST_MODULE XContainer

#include <boost/test/unit_test.hpp>
#include <stdio.h>

BOOST_AUTO_TEST_SUITE(test_suite_name2)

BOOST_AUTO_TEST_CASE(TestXContainer)
{
    BOOST_CHECK(true);
}

BOOST_AUTO_TEST_SUITE_END()

When I compile the project I get a link error that's saying that main is already defined. I noticed that main file is defined in unit_test.hpp but I need to include it for the test macros.

How should I add 2 test cases in 2 separate file?

Upvotes: 4

Views: 3686

Answers (3)

Zhang
Zhang

Reputation: 3356

testXXX.h shouldn't be included in testXXX.cpp.

All of testXXX.h files should be included in main.cpp which should contain #define BOOST_TEST_MODULE TestXXXXXXXXX

Upvotes: 0

legalize
legalize

Reputation: 2251

The real problem is that BOOST_TEST_MODULE is only ever intended to be defined once in your entire test executable. Defining BOOST_TEST_MODULE also defines BOOST_TEST_MAIN which pulls in an implementation of main.

So in one single place define BOOST_TEST_MODULE to be the name of your global suite and therefore also define BOOST_TEST_MAIN to get a single implementation of main.

This is a subtlety that I will need to note in my documentation rewrite.

Upvotes: 10

zoska
zoska

Reputation: 1734

You must use #define BOOST_TEST_DYN_LINK in every source file with tests.

Upvotes: 1

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