Prep v233.3: Add all possible coverage tests for elogind

[elogind.git] / src / test / test-extract-word.c

diff --git a/src/test/test-extract-word.c b/src/test/test-extract-word.c
new file mode 100644 (file)
index 0000000..8b75ebd
--- /dev/null
+++ b/src/test/test-extract-word.c
@@ -0,0 +1,560 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+  Copyright 2013 Thomas H.P. Andersen
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "extract-word.h"
+#include "log.h"
+#include "string-util.h"
+
+static void test_extract_first_word(void) {
+        const char *p, *original;
+        char *t;
+
+        p = original = "foobar waldo";
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "foobar"));
+        free(t);
+        assert_se(p == original + 7);
+
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "waldo"));
+        free(t);
+        assert_se(isempty(p));
+
+        assert_se(extract_first_word(&p, &t, NULL, 0) == 0);
+        assert_se(!t);
+        assert_se(isempty(p));
+
+        p = original = "\"foobar\" \'waldo\'";
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "\"foobar\""));
+        free(t);
+        assert_se(p == original + 9);
+
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "\'waldo\'"));
+        free(t);
+        assert_se(isempty(p));
+
+        assert_se(extract_first_word(&p, &t, NULL, 0) == 0);
+        assert_se(!t);
+        assert_se(isempty(p));
+
+        p = original = "\"foobar\" \'waldo\'";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) > 0);
+        assert_se(streq(t, "foobar"));
+        free(t);
+        assert_se(p == original + 9);
+
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) > 0);
+        assert_se(streq(t, "waldo"));
+        free(t);
+        assert_se(isempty(p));
+
+        assert_se(extract_first_word(&p, &t, NULL, 0) == 0);
+        assert_se(!t);
+        assert_se(isempty(p));
+
+        p = original = "\"";
+        assert_se(extract_first_word(&p, &t, NULL, 0) == 1);
+        assert_se(streq(t, "\""));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\"";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) == -EINVAL);
+        assert_se(p == original + 1);
+
+        p = original = "\'";
+        assert_se(extract_first_word(&p, &t, NULL, 0) == 1);
+        assert_se(streq(t, "\'"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\'";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) == -EINVAL);
+        assert_se(p == original + 1);
+
+        p = original = "\'fooo";
+        assert_se(extract_first_word(&p, &t, NULL, 0) == 1);
+        assert_se(streq(t, "\'fooo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\'fooo";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) == -EINVAL);
+        assert_se(p == original + 5);
+
+        p = original = "\'fooo";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "fooo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\"fooo";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "fooo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "yay\'foo\'bar";
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "yay\'foo\'bar"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "yay\'foo\'bar";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) > 0);
+        assert_se(streq(t, "yayfoobar"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "   foobar   ";
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "foobar"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = " foo\\ba\\x6ar ";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE) > 0);
+        assert_se(streq(t, "foo\ba\x6ar"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = " foo\\ba\\x6ar ";
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "foobax6ar"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "    f\\u00f6o \"pi\\U0001F4A9le\"   ";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE) > 0);
+        assert_se(streq(t, "föo"));
+        free(t);
+        assert_se(p == original + 13);
+
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE) > 0);
+        assert_se(streq(t, "pi\360\237\222\251le"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "fooo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE_RELAX) > 0);
+        assert_se(streq(t, "fooo\\"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE_RELAX|EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "fooo\\"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE|EXTRACT_CUNESCAPE_RELAX) > 0);
+        assert_se(streq(t, "fooo\\"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word(&p, &t, NULL, 0) == -EINVAL);
+        assert_se(p == original + 5);
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "foo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "foo::bar";
+        assert_se(extract_first_word(&p, &t, ":", 0) == 1);
+        assert_se(streq(t, "foo"));
+        free(t);
+        assert_se(p == original + 5);
+
+        assert_se(extract_first_word(&p, &t, ":", 0) == 1);
+        assert_se(streq(t, "bar"));
+        free(t);
+        assert_se(isempty(p));
+
+        assert_se(extract_first_word(&p, &t, ":", 0) == 0);
+        assert_se(!t);
+        assert_se(isempty(p));
+
+        p = original = "foo\\:bar::waldo";
+        assert_se(extract_first_word(&p, &t, ":", 0) == 1);
+        assert_se(streq(t, "foo:bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        assert_se(extract_first_word(&p, &t, ":", 0) == 1);
+        assert_se(streq(t, "waldo"));
+        free(t);
+        assert_se(isempty(p));
+
+        assert_se(extract_first_word(&p, &t, ":", 0) == 0);
+        assert_se(!t);
+        assert_se(isempty(p));
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE_RELAX) == -EINVAL);
+        assert_se(p == original + 5);
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE_RELAX|EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "foo\\"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE|EXTRACT_CUNESCAPE_RELAX|EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "foo\\"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "fooo bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE_RELAX) > 0);
+        assert_se(streq(t, "fooo bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE_RELAX|EXTRACT_RELAX) > 0);
+        assert_se(streq(t, "fooo bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE) == -EINVAL);
+        assert_se(p == original + 5);
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE|EXTRACT_CUNESCAPE_RELAX) > 0);
+        assert_se(streq(t, "fooo\\ bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        p = original = "\\w+@\\K[\\d.]+";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE) == -EINVAL);
+        assert_se(p == original + 1);
+
+        p = original = "\\w+@\\K[\\d.]+";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE|EXTRACT_CUNESCAPE_RELAX) > 0);
+        assert_se(streq(t, "\\w+@\\K[\\d.]+"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\\w+\\b";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_CUNESCAPE|EXTRACT_CUNESCAPE_RELAX) > 0);
+        assert_se(streq(t, "\\w+\b"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "-N ''";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) > 0);
+        assert_se(streq(t, "-N"));
+        free(t);
+        assert_se(p == original + 3);
+
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_QUOTES) > 0);
+        assert_se(streq(t, ""));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = ":foo\\:bar::waldo:";
+        assert_se(extract_first_word(&p, &t, ":", EXTRACT_DONT_COALESCE_SEPARATORS) == 1);
+        assert_se(t);
+        assert_se(streq(t, ""));
+        free(t);
+        assert_se(p == original + 1);
+
+        assert_se(extract_first_word(&p, &t, ":", EXTRACT_DONT_COALESCE_SEPARATORS) == 1);
+        assert_se(streq(t, "foo:bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        assert_se(extract_first_word(&p, &t, ":", EXTRACT_DONT_COALESCE_SEPARATORS) == 1);
+        assert_se(t);
+        assert_se(streq(t, ""));
+        free(t);
+        assert_se(p == original + 11);
+
+        assert_se(extract_first_word(&p, &t, ":", EXTRACT_DONT_COALESCE_SEPARATORS) == 1);
+        assert_se(streq(t, "waldo"));
+        free(t);
+        assert_se(p == original + 17);
+
+        assert_se(extract_first_word(&p, &t, ":", EXTRACT_DONT_COALESCE_SEPARATORS) == 1);
+        assert_se(streq(t, ""));
+        free(t);
+        assert_se(p == NULL);
+
+        assert_se(extract_first_word(&p, &t, ":", EXTRACT_DONT_COALESCE_SEPARATORS) == 0);
+        assert_se(!t);
+        assert_se(!p);
+
+        p = "foo\\xbar";
+        assert_se(extract_first_word(&p, &t, NULL, 0) > 0);
+        assert_se(streq(t, "fooxbar"));
+        free(t);
+        assert_se(p == NULL);
+
+        p = "foo\\xbar";
+        assert_se(extract_first_word(&p, &t, NULL, EXTRACT_RETAIN_ESCAPE) > 0);
+        assert_se(streq(t, "foo\\xbar"));
+        free(t);
+        assert_se(p == NULL);
+}
+
+#if 0 /// UNNEEDED by elogind
+static void test_extract_first_word_and_warn(void) {
+        const char *p, *original;
+        char *t;
+
+        p = original = "foobar waldo";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, 0, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "foobar"));
+        free(t);
+        assert_se(p == original + 7);
+
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, 0, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "waldo"));
+        free(t);
+        assert_se(isempty(p));
+
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, 0, NULL, "fake", 1, original) == 0);
+        assert_se(!t);
+        assert_se(isempty(p));
+
+        p = original = "\"foobar\" \'waldo\'";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "foobar"));
+        free(t);
+        assert_se(p == original + 9);
+
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "waldo"));
+        free(t);
+        assert_se(isempty(p));
+
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, 0, NULL, "fake", 1, original) == 0);
+        assert_se(!t);
+        assert_se(isempty(p));
+
+        p = original = "\"";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES, NULL, "fake", 1, original) == -EINVAL);
+        assert_se(p == original + 1);
+
+        p = original = "\'";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES, NULL, "fake", 1, original) == -EINVAL);
+        assert_se(p == original + 1);
+
+        p = original = "\'fooo";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES, NULL, "fake", 1, original) == -EINVAL);
+        assert_se(p == original + 5);
+
+        p = original = "\'fooo";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_RELAX, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "fooo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = " foo\\ba\\x6ar ";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_CUNESCAPE, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "foo\ba\x6ar"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = " foo\\ba\\x6ar ";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, 0, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "foobax6ar"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "    f\\u00f6o \"pi\\U0001F4A9le\"   ";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_CUNESCAPE, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "föo"));
+        free(t);
+        assert_se(p == original + 13);
+
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "pi\360\237\222\251le"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_RELAX, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "fooo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, 0, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "fooo\\"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_CUNESCAPE, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "fooo\\"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES, NULL, "fake", 1, original) == -EINVAL);
+        assert_se(p == original + 5);
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_RELAX, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "foo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE, NULL, "fake", 1, original) == -EINVAL);
+        assert_se(p == original + 5);
+
+        p = original = "\"foo\\";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE|EXTRACT_RELAX, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "foo"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_RELAX, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "fooo bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, 0, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "fooo bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        p = original = "fooo\\ bar quux";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_CUNESCAPE, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "fooo\\ bar"));
+        free(t);
+        assert_se(p == original + 10);
+
+        p = original = "\\w+@\\K[\\d.]+";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_CUNESCAPE, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "\\w+@\\K[\\d.]+"));
+        free(t);
+        assert_se(isempty(p));
+
+        p = original = "\\w+\\b";
+        assert_se(extract_first_word_and_warn(&p, &t, NULL, EXTRACT_CUNESCAPE, NULL, "fake", 1, original) > 0);
+        assert_se(streq(t, "\\w+\b"));
+        free(t);
+        assert_se(isempty(p));
+}
+
+static void test_extract_many_words(void) {
+        const char *p, *original;
+        char *a, *b, *c;
+
+        p = original = "foobar waldi piep";
+        assert_se(extract_many_words(&p, NULL, 0, &a, &b, &c, NULL) == 3);
+        assert_se(isempty(p));
+        assert_se(streq_ptr(a, "foobar"));
+        assert_se(streq_ptr(b, "waldi"));
+        assert_se(streq_ptr(c, "piep"));
+        free(a);
+        free(b);
+        free(c);
+
+        p = original = "'foobar' wa\"ld\"i   ";
+        assert_se(extract_many_words(&p, NULL, 0, &a, &b, &c, NULL) == 2);
+        assert_se(isempty(p));
+        assert_se(streq_ptr(a, "'foobar'"));
+        assert_se(streq_ptr(b, "wa\"ld\"i"));
+        assert_se(streq_ptr(c, NULL));
+        free(a);
+        free(b);
+
+        p = original = "'foobar' wa\"ld\"i   ";
+        assert_se(extract_many_words(&p, NULL, EXTRACT_QUOTES, &a, &b, &c, NULL) == 2);
+        assert_se(isempty(p));
+        assert_se(streq_ptr(a, "foobar"));
+        assert_se(streq_ptr(b, "waldi"));
+        assert_se(streq_ptr(c, NULL));
+        free(a);
+        free(b);
+
+        p = original = "";
+        assert_se(extract_many_words(&p, NULL, 0, &a, &b, &c, NULL) == 0);
+        assert_se(isempty(p));
+        assert_se(streq_ptr(a, NULL));
+        assert_se(streq_ptr(b, NULL));
+        assert_se(streq_ptr(c, NULL));
+
+        p = original = "  ";
+        assert_se(extract_many_words(&p, NULL, 0, &a, &b, &c, NULL) == 0);
+        assert_se(isempty(p));
+        assert_se(streq_ptr(a, NULL));
+        assert_se(streq_ptr(b, NULL));
+        assert_se(streq_ptr(c, NULL));
+
+        p = original = "foobar";
+        assert_se(extract_many_words(&p, NULL, 0, NULL) == 0);
+        assert_se(p == original);
+
+        p = original = "foobar waldi";
+        assert_se(extract_many_words(&p, NULL, 0, &a, NULL) == 1);
+        assert_se(p == original+7);
+        assert_se(streq_ptr(a, "foobar"));
+        free(a);
+
+        p = original = "     foobar    ";
+        assert_se(extract_many_words(&p, NULL, 0, &a, NULL) == 1);
+        assert_se(isempty(p));
+        assert_se(streq_ptr(a, "foobar"));
+        free(a);
+}
+#endif // 0
+
+int main(int argc, char *argv[]) {
+        log_parse_environment();
+        log_open();
+
+        test_extract_first_word();
+#if 0 /// UNNEEDED by elogind
+        test_extract_first_word_and_warn();
+        test_extract_many_words();
+#endif // 0
+
+        return 0;
+}