1 | <sect1 id="prepare-abouttestsuites">
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2 | <title>About the test suites</title>
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3 |
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4 | <para>Most packages provide a test suite. Running the test suite for a newly
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5 | built package is generally a good idea, as it can provide a nice sanity check
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6 | that everything compiled correctly. A test suite that passes its set of checks
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7 | usually proves that the package is functioning as the developer intended. It
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8 | does not, however, guarantee that the package is totally bug free.</para>
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9 |
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10 | <para>Some test suites are more important than others. For example, the test
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11 | suites for the core toolchain packages -- GCC, Binutils, and Glibc -- are of
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12 | the utmost importance due to their central role in a properly functioning
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13 | system. But be warned, the test suites for GCC and Glibc can take a very long
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14 | time to complete, especially on slower hardware.</para>
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15 |
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16 | <note><para>Experience has shown us that there is little to be gained from running
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17 | the test suites in <xref linkend="chapter-temporary-tools"/>. There can be no
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18 | escaping the fact that the host system always exerts some influence on the
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19 | tests in that chapter, often causing weird and inexplicable failures. Not only
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20 | that, the tools built in <xref linkend="chapter-temporary-tools"/> are
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21 | temporary and eventually discarded. For the average reader of this book we
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22 | recommend <emphasis>not</emphasis> to run the test suites in <xref
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23 | linkend="chapter-temporary-tools"/>. The instructions for running those test
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24 | suites are still provided for the benefit of testers and developers, but they
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25 | are strictly optional for everyone else.</para></note>
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26 |
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27 | <para>A common problem when running the test suites for Binutils and GCC is
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28 | running out of pseudo terminals (PTYs for short). The symptom is a very high
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29 | number of failing tests. This can happen for several reasons, but the most
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30 | likely cause is that the host system doesn't have the
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31 | <emphasis>devpts</emphasis> file system set up correctly. We'll discuss this in
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32 | more detail later on in <xref linkend="chapter-temporary-tools"/>.</para>
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33 |
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34 | <para>Sometimes package test suites will give false failures. You can
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35 | consult the LFS Wiki at <ulink url="&wiki-root;"/> to verify that these
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36 | failures are normal. This applies to all tests throughout the book.</para>
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37 |
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38 | </sect1>
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39 |
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