+static void test_path_join(void) {
+
+#define test_join(root, path, rest, expected) { \
+ _cleanup_free_ char *z = NULL; \
+ z = path_join(root, path, rest); \
+ assert_se(streq(z, expected)); \
+ }
+
+ test_join("/root", "/a/b", "/c", "/root/a/b/c");
+ test_join("/root", "a/b", "c", "/root/a/b/c");
+ test_join("/root", "/a/b", "c", "/root/a/b/c");
+ test_join("/root", "/", "c", "/root/c");
+ test_join("/root", "/", NULL, "/root/");
+
+ test_join(NULL, "/a/b", "/c", "/a/b/c");
+ test_join(NULL, "a/b", "c", "a/b/c");
+ test_join(NULL, "/a/b", "c", "/a/b/c");
+ test_join(NULL, "/", "c", "/c");
+ test_join(NULL, "/", NULL, "/");
+}
+
+static void test_fsck_exists(void) {
+ /* Ensure we use a sane default for PATH. */
+ unsetenv("PATH");
+
+ /* fsck.minix is provided by util-linux and will probably exist. */
+ assert_se(fsck_exists("minix") == 0);
+
+ assert_se(fsck_exists("AbCdE") == -ENOENT);
+}
+
+static void test_make_relative(void) {
+ char *result;
+
+ assert_se(path_make_relative("some/relative/path", "/some/path", &result) < 0);
+ assert_se(path_make_relative("/some/path", "some/relative/path", &result) < 0);
+
+#define test(from_dir, to_path, expected) { \
+ _cleanup_free_ char *z = NULL; \
+ path_make_relative(from_dir, to_path, &z); \
+ assert_se(streq(z, expected)); \
+ }
+
+ test("/", "/", ".");
+ test("/", "/some/path", "some/path");
+ test("/some/path", "/some/path", ".");
+ test("/some/path", "/some/path/in/subdir", "in/subdir");
+ test("/some/path", "/", "../..");
+ test("/some/path", "/some/other/path", "../other/path");
+ test("//extra/////slashes///won't////fool///anybody//", "////extra///slashes////are/just///fine///", "../../../are/just/fine");
+}
+
+static void test_strv_resolve(void) {
+ char tmp_dir[] = "/tmp/test-path-util-XXXXXX";
+ _cleanup_strv_free_ char **search_dirs = NULL;
+ _cleanup_strv_free_ char **absolute_dirs = NULL;
+ char **d;
+
+ assert_se(mkdtemp(tmp_dir) != NULL);
+
+ search_dirs = strv_new("/dir1", "/dir2", "/dir3", NULL);
+ assert_se(search_dirs);
+ STRV_FOREACH(d, search_dirs) {
+ char *p = strappend(tmp_dir, *d);
+ assert_se(p);
+ assert_se(strv_push(&absolute_dirs, p) == 0);
+ }
+
+ assert_se(mkdir(absolute_dirs[0], 0700) == 0);
+ assert_se(mkdir(absolute_dirs[1], 0700) == 0);
+ assert_se(symlink("dir2", absolute_dirs[2]) == 0);
+
+ path_strv_resolve(search_dirs, tmp_dir);
+ assert_se(streq(search_dirs[0], "/dir1"));
+ assert_se(streq(search_dirs[1], "/dir2"));
+ assert_se(streq(search_dirs[2], "/dir2"));
+
+ assert_se(rm_rf_dangerous(tmp_dir, false, true, false) == 0);
+}
+
+static void test_path_startswith(void) {
+ assert_se(path_startswith("/foo/bar/barfoo/", "/foo"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "/foo/"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "/"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "////"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "/foo//bar/////barfoo///"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo////"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "/foo/bar///barfoo/"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "/foo////bar/barfoo/"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "////foo/bar/barfoo/"));
+ assert_se(path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo"));
+
+ assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa/"));
+ assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa"));
+ assert_se(!path_startswith("/foo/bar/barfoo/", ""));
+ assert_se(!path_startswith("/foo/bar/barfoo/", "/bar/foo"));
+ assert_se(!path_startswith("/foo/bar/barfoo/", "/f/b/b/"));
+}
+
+int main(int argc, char **argv) {