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-rw-r--r--src/test/test-utf8.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/src/test/test-utf8.c b/src/test/test-utf8.c
new file mode 100644
index 0000000..c7b6d8d
--- /dev/null
+++ b/src/test/test-utf8.c
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "utf8.h"
+#include "util.h"
+
+static void test_utf8_is_printable(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se(utf8_is_printable("ascii is valid\tunicode", 22));
+ assert_se(utf8_is_printable("\342\204\242", 3));
+ assert_se(!utf8_is_printable("\341\204", 2));
+ assert_se(utf8_is_printable("ąę", 4));
+ assert_se(!utf8_is_printable("\r", 1));
+ assert_se(utf8_is_printable("\n", 1));
+ assert_se(utf8_is_printable("\t", 1));
+}
+
+static void test_utf8_n_is_valid(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se( utf8_is_valid_n("ascii is valid unicode", 21));
+ assert_se( utf8_is_valid_n("ascii is valid unicode", 22));
+ assert_se(!utf8_is_valid_n("ascii is valid unicode", 23));
+ assert_se( utf8_is_valid_n("\342\204\242", 0));
+ assert_se(!utf8_is_valid_n("\342\204\242", 1));
+ assert_se(!utf8_is_valid_n("\342\204\242", 2));
+ assert_se( utf8_is_valid_n("\342\204\242", 3));
+ assert_se(!utf8_is_valid_n("\342\204\242", 4));
+ assert_se( utf8_is_valid_n("<ZZ>", 0));
+ assert_se( utf8_is_valid_n("<ZZ>", 1));
+ assert_se( utf8_is_valid_n("<ZZ>", 2));
+ assert_se( utf8_is_valid_n("<ZZ>", 3));
+ assert_se( utf8_is_valid_n("<ZZ>", 4));
+ assert_se(!utf8_is_valid_n("<ZZ>", 5));
+}
+
+static void test_utf8_is_valid(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se(utf8_is_valid("ascii is valid unicode"));
+ assert_se(utf8_is_valid("\342\204\242"));
+ assert_se(!utf8_is_valid("\341\204"));
+}
+
+static void test_ascii_is_valid(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se( ascii_is_valid("alsdjf\t\vbarr\nba z"));
+ assert_se(!ascii_is_valid("\342\204\242"));
+ assert_se(!ascii_is_valid("\341\204"));
+}
+
+static void test_ascii_is_valid_n(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se( ascii_is_valid_n("alsdjf\t\vbarr\nba z", 17));
+ assert_se( ascii_is_valid_n("alsdjf\t\vbarr\nba z", 16));
+ assert_se(!ascii_is_valid_n("alsdjf\t\vbarr\nba z", 18));
+ assert_se(!ascii_is_valid_n("\342\204\242", 3));
+ assert_se(!ascii_is_valid_n("\342\204\242", 2));
+ assert_se(!ascii_is_valid_n("\342\204\242", 1));
+ assert_se( ascii_is_valid_n("\342\204\242", 0));
+}
+
+static void test_utf8_encoded_valid_unichar(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se(utf8_encoded_valid_unichar("\342\204\242", 1) == -EINVAL); /* truncated */
+ assert_se(utf8_encoded_valid_unichar("\342\204\242", 2) == -EINVAL); /* truncated */
+ assert_se(utf8_encoded_valid_unichar("\342\204\242", 3) == 3);
+ assert_se(utf8_encoded_valid_unichar("\342\204\242", 4) == 3);
+ assert_se(utf8_encoded_valid_unichar("\302\256", 1) == -EINVAL); /* truncated */
+ assert_se(utf8_encoded_valid_unichar("\302\256", 2) == 2);
+ assert_se(utf8_encoded_valid_unichar("\302\256", 3) == 2);
+ assert_se(utf8_encoded_valid_unichar("\302\256", (size_t) -1) == 2);
+ assert_se(utf8_encoded_valid_unichar("a", 1) == 1);
+ assert_se(utf8_encoded_valid_unichar("a", 2) == 1);
+ assert_se(utf8_encoded_valid_unichar("\341\204", 1) == -EINVAL); /* truncated, potentially valid */
+ assert_se(utf8_encoded_valid_unichar("\341\204", 2) == -EINVAL); /* truncated, potentially valid */
+ assert_se(utf8_encoded_valid_unichar("\341\204", 3) == -EINVAL);
+ assert_se(utf8_encoded_valid_unichar("\341\204\341\204", 4) == -EINVAL);
+ assert_se(utf8_encoded_valid_unichar("\341\204\341\204", 5) == -EINVAL);
+}
+
+static void test_utf8_escape_invalid(void) {
+ _cleanup_free_ char *p1, *p2, *p3;
+
+ log_info("/* %s */", __func__);
+
+ p1 = utf8_escape_invalid("goo goo goo");
+ puts(p1);
+ assert_se(utf8_is_valid(p1));
+
+ p2 = utf8_escape_invalid("\341\204\341\204");
+ puts(p2);
+ assert_se(utf8_is_valid(p2));
+
+ p3 = utf8_escape_invalid("\341\204");
+ puts(p3);
+ assert_se(utf8_is_valid(p3));
+}
+
+static void test_utf8_escape_non_printable(void) {
+ _cleanup_free_ char *p1, *p2, *p3, *p4, *p5, *p6;
+
+ log_info("/* %s */", __func__);
+
+ p1 = utf8_escape_non_printable("goo goo goo");
+ puts(p1);
+ assert_se(utf8_is_valid(p1));
+
+ p2 = utf8_escape_non_printable("\341\204\341\204");
+ puts(p2);
+ assert_se(utf8_is_valid(p2));
+
+ p3 = utf8_escape_non_printable("\341\204");
+ puts(p3);
+ assert_se(utf8_is_valid(p3));
+
+ p4 = utf8_escape_non_printable("ąę\n가너도루\n1234\n\341\204\341\204\n\001 \019\20\a");
+ puts(p4);
+ assert_se(utf8_is_valid(p4));
+
+ p5 = utf8_escape_non_printable("\001 \019\20\a");
+ puts(p5);
+ assert_se(utf8_is_valid(p5));
+
+ p6 = utf8_escape_non_printable("\xef\xbf\x30\x13");
+ puts(p6);
+ assert_se(utf8_is_valid(p6));
+}
+
+static void test_utf8_escape_non_printable_full(void) {
+ log_info("/* %s */", __func__);
+
+ for (size_t i = 0; i < 20; i++) {
+ _cleanup_free_ char *p;
+
+ p = utf8_escape_non_printable_full("goo goo goo", i);
+ puts(p);
+ assert_se(utf8_is_valid(p));
+ assert_se(utf8_console_width(p) <= i);
+ }
+
+ for (size_t i = 0; i < 20; i++) {
+ _cleanup_free_ char *p;
+
+ p = utf8_escape_non_printable_full("\001 \019\20\a", i);
+ puts(p);
+ assert_se(utf8_is_valid(p));
+ assert_se(utf8_console_width(p) <= i);
+ }
+
+ for (size_t i = 0; i < 20; i++) {
+ _cleanup_free_ char *p;
+
+ p = utf8_escape_non_printable_full("\xef\xbf\x30\x13", i);
+ puts(p);
+ assert_se(utf8_is_valid(p));
+ assert_se(utf8_console_width(p) <= i);
+ }
+}
+
+static void test_utf16_to_utf8(void) {
+ const char16_t utf16[] = { htole16('a'), htole16(0xd800), htole16('b'), htole16(0xdc00), htole16('c'), htole16(0xd801), htole16(0xdc37) };
+ static const char utf8[] = { 'a', 'b', 'c', 0xf0, 0x90, 0x90, 0xb7 };
+ _cleanup_free_ char16_t *b = NULL;
+ _cleanup_free_ char *a = NULL;
+
+ log_info("/* %s */", __func__);
+
+ /* Convert UTF-16 to UTF-8, filtering embedded bad chars */
+ a = utf16_to_utf8(utf16, sizeof(utf16));
+ assert_se(a);
+ assert_se(memcmp(a, utf8, sizeof(utf8)) == 0);
+
+ /* Convert UTF-8 to UTF-16, and back */
+ b = utf8_to_utf16(utf8, sizeof(utf8));
+ assert_se(b);
+
+ free(a);
+ a = utf16_to_utf8(b, char16_strlen(b) * 2);
+ assert_se(a);
+ assert_se(strlen(a) == sizeof(utf8));
+ assert_se(memcmp(a, utf8, sizeof(utf8)) == 0);
+}
+
+static void test_utf8_n_codepoints(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se(utf8_n_codepoints("abc") == 3);
+ assert_se(utf8_n_codepoints("zażółcić gęślą jaźń") == 19);
+ assert_se(utf8_n_codepoints("串") == 1);
+ assert_se(utf8_n_codepoints("") == 0);
+ assert_se(utf8_n_codepoints("…👊🔪💐…") == 5);
+ assert_se(utf8_n_codepoints("\xF1") == (size_t) -1);
+}
+
+static void test_utf8_console_width(void) {
+ log_info("/* %s */", __func__);
+
+ assert_se(utf8_console_width("abc") == 3);
+ assert_se(utf8_console_width("zażółcić gęślą jaźń") == 19);
+ assert_se(utf8_console_width("串") == 2);
+ assert_se(utf8_console_width("") == 0);
+ assert_se(utf8_console_width("…👊🔪💐…") == 8);
+ assert_se(utf8_console_width("\xF1") == (size_t) -1);
+}
+
+static void test_utf8_to_utf16(void) {
+ const char *p;
+
+ log_info("/* %s */", __func__);
+
+ FOREACH_STRING(p,
+ "abc",
+ "zażółcić gęślą jaźń",
+ "串",
+ "",
+ "…👊🔪💐…") {
+
+ _cleanup_free_ char16_t *a = NULL;
+ _cleanup_free_ char *b = NULL;
+
+ a = utf8_to_utf16(p, strlen(p));
+ assert_se(a);
+
+ b = utf16_to_utf8(a, char16_strlen(a) * 2);
+ assert_se(b);
+ assert_se(streq(p, b));
+ }
+}
+
+int main(int argc, char *argv[]) {
+ test_utf8_n_is_valid();
+ test_utf8_is_valid();
+ test_utf8_is_printable();
+ test_ascii_is_valid();
+ test_ascii_is_valid_n();
+ test_utf8_encoded_valid_unichar();
+ test_utf8_escape_invalid();
+ test_utf8_escape_non_printable();
+ test_utf8_escape_non_printable_full();
+ test_utf16_to_utf8();
+ test_utf8_n_codepoints();
+ test_utf8_console_width();
+ test_utf8_to_utf16();
+
+ return 0;
+}
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