Method match

test/testregex.cpp:60–74

    }

    void match() const {
        const auto r = assertRegex("begin.*end");
        int called = 0;
        int s = -1;
        int e = -1;
        auto f = [&](int start, int end) {
            ++called;
            s = start;
            e = end;
        };
        ASSERT_EQUALS("", r->match("begin-123-end", std::move(f)));
        ASSERT_EQUALS(1, called);
        ASSERT_EQUALS(0, s);
        ASSERT_EQUALS(13, e);
    }

    void nomatch() const {
        const auto r = assertRegex("begin.*end");