Choosing which unit test to run on the basis of the command-line arguments.

§1. Main routine. 

    define INTOOL_NAME "foundation-test"
    enum TEST_STRINGS_CLSW
    enum TEST_RE_CLSW
    enum TEST_DICT_CLSW
    enum TEST_LITERALS_CLSW
    enum TEST_REPLACEMENT_CLSW
    enum TEST_LISTS_CLSW
    enum TEST_STACKS_CLSW
    enum TEST_SEMVER_CLSW

    int main(int argc, char **argv) {
        Foundation::start();
        CommandLine::declare_heading(L"inexample: a tool for testing foundation facilities\n");

        CommandLine::declare_switch(TEST_STRINGS_CLSW, L"test-strings", 2,
            L"test string manipulation (X is ignored)");
        CommandLine::declare_switch(TEST_RE_CLSW, L"test-regexp", 2,
            L"test regular expression matches on a list of cases in file X");
        CommandLine::declare_switch(TEST_DICT_CLSW, L"test-dictionaries", 2,
            L"test dictionary building on a list of keys and values in file X");
        CommandLine::declare_switch(TEST_LITERALS_CLSW, L"test-literals", 2,
            L"test string literals (X is ignored)");
        CommandLine::declare_switch(TEST_REPLACEMENT_CLSW, L"test-replacement", 2,
            L"test regular expression replacements on a list of cases in file X");
        CommandLine::declare_switch(TEST_LISTS_CLSW, L"test-lists", 2,
            L"test linked lists (X is ignored)");
        CommandLine::declare_switch(TEST_STACKS_CLSW, L"test-stacks", 2,
            L"test LIFO stacks (X is ignored)");
        CommandLine::declare_switch(TEST_SEMVER_CLSW, L"test-semver", 2,
            L"test semantic version numbers (X is ignored)");

        CommandLine::read(argc, argv, NULL, &Main::respond, &Main::ignore);
        Foundation::end();
        return 0;
    }

    void Main::respond(int id, int val, text_stream *arg, void *state) {
        switch (id) {
            case TEST_STRINGS_CLSW: Unit::test_strings(); break;
            case TEST_RE_CLSW: Unit::test_regexp(arg); break;
            case TEST_REPLACEMENT_CLSW: Unit::test_replacement(arg); break;
            case TEST_DICT_CLSW: Unit::test_dictionaries(arg); break;
            case TEST_LITERALS_CLSW: Unit::test_literals(); break;
            case TEST_LISTS_CLSW: Unit::test_linked_lists(); break;
            case TEST_STACKS_CLSW: Unit::test_stacks(); break;
            case TEST_SEMVER_CLSW: Unit::test_semver(); break;
        }
    }

    void Main::ignore(int id, text_stream *arg, void *state) {
        Errors::fatal("only switches may be used at the command line");
    }

The function main is used in 8/wm (§3).

The function Main::respond appears nowhere else.

The function Main::ignore appears nowhere else.