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| </a><b>External test runner</b> |
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| <a name="utf.user-guide.extern-test-runner-variant"></a>The external test runner variant of the <acronym class="acronym">UTF</acronym> |
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| All other usage variants employ the build-in test runners. If you plan to use an external test runner with your |
| test module you need to build it as a dynamic library. This usage of the <acronym class="acronym">UTF</acronym> is called the external test runner |
| variant of the <acronym class="acronym">UTF</acronym>. The variant requires you to define the flag |
| <a class="xref" href="../../compilation.html#utf.flag.dyn-link">BOOST_TEST_DYN_LINK</a> either in a makefile or before the header |
| <code class="filename">boost/test/unit_test.hpp</code> inclusion. An external test runner utility is |
| required to link with dynamic library. |
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| <p class="first-line-indented"> |
| If an external test runner is based on the test runner built in to the dynamic library (like the standalone |
| boost_test_runner utility supplied by the <acronym class="acronym">UTF</acronym>), it requires you to implement the <a class="link" href="../../user-guide.html#test-module.def"> |
| test module</a> initialization function that matches the alternative initialization function signature. The |
| <acronym class="acronym">UTF</acronym> provides an ability to <a class="link" href="../initialization.html#utf.user-guide.initialization.auto-generation" title="Automated generation of the test module initialization function">automatically generate |
| </a> an empty test module initialization function with correct signature if no custom initialization is required |
| by a test module. |
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| <th align="left">Note</th> |
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| An advanced test runner doesn't have to be based on the build-in one and may require a different |
| test module initialization function signature and/or name. |
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