terminal: add parser state-machine

[elogind.git] / src / libsystemd-terminal / test-term-parser.c

diff --git a/src/libsystemd-terminal/test-term-parser.c b/src/libsystemd-terminal/test-term-parser.c
new file mode 100644 (file)
index 0000000..ed16f5f
--- /dev/null
+++ b/src/libsystemd-terminal/test-term-parser.c
@@ -0,0 +1,143 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+/***
+  This file is part of systemd.
+
+  Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
+
+  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/>.
+***/
+
+/*
+ * Terminal Parser Tests
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "macro.h"
+#include "term-internal.h"
+#include "util.h"
+
+static void test_term_utf8_invalid(void) {
+        term_utf8 p = { };
+        const uint32_t *res;
+        size_t len;
+
+        res = term_utf8_decode(NULL, NULL, 0);
+        assert_se(res == NULL);
+
+        res = term_utf8_decode(&p, NULL, 0);
+        assert_se(res != NULL);
+
+        len = 5;
+        res = term_utf8_decode(NULL, &len, 0);
+        assert_se(res == NULL);
+        assert_se(len == 0);
+
+        len = 5;
+        res = term_utf8_decode(&p, &len, 0);
+        assert_se(res != NULL);
+        assert_se(len == 1);
+
+        len = 5;
+        res = term_utf8_decode(&p, &len, 0xCf);
+        assert_se(res == NULL);
+        assert_se(len == 0);
+
+        len = 5;
+        res = term_utf8_decode(&p, &len, 0x0);
+        assert_se(res != NULL);
+        assert_se(len == 2);
+}
+
+static void test_term_utf8_range(void) {
+        term_utf8 p = { };
+        const uint32_t *res;
+        char u8[4];
+        uint32_t i, j;
+        size_t ulen, len;
+
+        /* Convert all ucs-4 chars to utf-8 and back */
+
+        for (i = 0; i < 0x10FFFF; ++i) {
+                ulen = term_utf8_encode(u8, i);
+                if (!ulen)
+                        continue;
+
+                for (j = 0; j < ulen; ++j) {
+                        res = term_utf8_decode(&p, &len, u8[j]);
+                        if (!res) {
+                                assert_se(j + 1 != ulen);
+                                continue;
+                        }
+
+                        assert_se(j + 1 == ulen);
+                        assert_se(len == 1 && *res == i);
+                        assert_se(i <= 127 || ulen >= 2);
+                }
+        }
+}
+
+static void test_term_utf8_mix(void) {
+        static const char source[] = {
+                0x00,                           /* normal 0 */
+                0xC0, 0x80,                     /* overlong 0 */
+                0xC0, 0x81,                     /* overlong 1 */
+                0xE0, 0x80, 0x81,               /* overlong 1 */
+                0xF0, 0x80, 0x80, 0x81,         /* overlong 1 */
+                0xC0, 0x00,                     /* invalid continuation */
+                0xC0, 0xC0, 0x81,               /* invalid continuation with a following overlong 1 */
+                0xF8, 0x80, 0x80, 0x80, 0x81,   /* overlong 1 with 5 bytes */
+                0xE0, 0x80, 0xC0, 0x81,         /* invalid 3-byte followed by valid 2-byte */
+                0xF0, 0x80, 0x80, 0xC0, 0x81,   /* invalid 4-byte followed by valid 2-byte */
+        };
+        static const uint32_t result[] = {
+                0x0000,
+                0x0000,
+                0x0001,
+                0x0001,
+                0x0001,
+                0x00C0, 0x0000,
+                0x00C0, 0x0001,
+                0x00F8, 0x0080, 0x0080, 0x0080, 0x0081,
+                0x00E0, 0x0080, 0x0001,
+                0x00F0, 0x0080, 0x0080, 0x0001,
+        };
+        term_utf8 p = { };
+        const uint32_t *res;
+        unsigned int i, j;
+        size_t len;
+
+        for (i = 0, j = 0; i < sizeof(source); ++i) {
+                res = term_utf8_decode(&p, &len, source[i]);
+                if (!res)
+                        continue;
+
+                assert_se(j + len <= ELEMENTSOF(result));
+                assert_se(!memcmp(res, &result[j], sizeof(uint32_t) * len));
+                j += len;
+        }
+
+        assert_se(j == ELEMENTSOF(result));
+}
+
+int main(int argc, char *argv[]) {
+        test_term_utf8_invalid();
+        test_term_utf8_range();
+        test_term_utf8_mix();
+
+        return 0;
+}