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The headers in this directory provide facilities for automatic unit testing.
Basically, each header defines unit tests for an algorithm or a set of related
algorithms. To get the tests for these algorithms, simply include the header
at global scope. However, before including the header, you must define the
following macros:
`MAKE_TUPLE(...)`
Must expand to a sequence holding `__VA_ARGS__`. A valid definition
would be `hana::make_tuple(__VA_ARGS__)`.
`TUPLE_TYPE(...)`
Must expand to the type of a sequence holding objects of type `__VA_ARGS__`.
A valid definition would be `hana::tuple<__VA_ARGS__>`.
`TUPLE_TAG`
Must expand to the tag of the sequence. A valid definition would
be `hana::tuple_tag`.
The following macros may or may not be defined:
`MAKE_TUPLE_NO_CONSTEXPR`
Must be defined if the `MAKE_TUPLE` macro can't be used inside a
constant expression. Otherwise, `MAKE_TUPLE` is assumed to be able
to construct a `constexpr` container.
The following directories contain automatic unit tests, and the following is
sufficient when adding a new automatic unit test (in a file `${FILE}`):
```sh
DIRECTORIES=$(find test -type d -name auto | grep -v test/_include/auto)
for d in ${DIRECTORIES}; do
cat > ${d}/${FILE}.cpp <<EOF
// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include "_specs.hpp"
#include <auto/${FILE}.hpp>
int main() { }
EOF
done
```
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