1 files changed, 82 insertions, 0 deletions

diff --git a/regress/unittests/utf8/tests.c b/regress/unittests/utf8/tests.c
new file mode 100644
index 000000000..fad2ec279
--- /dev/null
+++ b/regress/unittests/utf8/tests.c
@@ -0,0 +1,82 @@
+/*      $OpenBSD: tests.c,v 1.2 2016/05/30 12:05:56 schwarze Exp $ */
+/*
+ * Regress test for the utf8.h *mprintf() API
+ *
+ * Written by Ingo Schwarze <schwarze@openbsd.org> in 2016
+ * and placed in the public domain.
+ */
+
+#include <locale.h>
+#include <string.h>
+
+#include "test_helper.h"
+
+#include "utf8.h"
+
+void     badarg(void);
+void     one(const char *, const char *, int, int, int, const char *);
+
+void
+badarg(void)
+{
+        char     buf[16];
+        int      len, width;
+
+        width = 1;
+        TEST_START("utf8_badarg");
+        len = snmprintf(buf, sizeof(buf), &width, "\377");
+        ASSERT_INT_EQ(len, -1);
+        ASSERT_STRING_EQ(buf, "");
+        ASSERT_INT_EQ(width, 0);
+        TEST_DONE();
+}
+
+void
+one(const char *name, const char *mbs, int width,
+    int wantwidth, int wantlen, const char *wants)
+{
+        char     buf[16];
+        int     *wp;
+        int      len;
+
+        if (wantlen == -2)
+                wantlen = strlen(wants);
+        (void)strlcpy(buf, "utf8_", sizeof(buf));
+        (void)strlcat(buf, name, sizeof(buf));
+        TEST_START(buf);
+        wp = wantwidth == -2 ? NULL : &width;
+        len = snmprintf(buf, sizeof(buf), wp, "%s", mbs);
+        ASSERT_INT_EQ(len, wantlen);
+        ASSERT_STRING_EQ(buf, wants);
+        ASSERT_INT_EQ(width, wantwidth);
+        TEST_DONE();
+}
+
+void
+tests(void)
+{
+        char    *loc;
+
+        TEST_START("utf8_setlocale");
+        loc = setlocale(LC_CTYPE, "en_US.UTF-8");
+        ASSERT_PTR_NE(loc, NULL);
+        TEST_DONE();
+
+        badarg();
+        one("null", NULL, 8, 6, 6, "(null)");
+        one("empty", "", 2, 0, 0, "");
+        one("ascii", "x", -2, -2, -2, "x");
+        one("newline", "a\nb", -2, -2, -2, "a\nb");
+        one("cr", "a\rb", -2, -2, -2, "a\rb");
+        one("tab", "a\tb", -2, -2, -2, "a\tb");
+        one("esc", "\033x", -2, -2, -2, "\\033x");
+        one("inv_badbyte", "\377x", -2, -2, -2, "\\377x");
+        one("inv_nocont", "\341x", -2, -2, -2, "\\341x");
+        one("inv_nolead", "a\200b", -2, -2, -2, "a\\200b");
+        one("sz_ascii", "1234567890123456", -2, -2, 16, "123456789012345");
+        one("sz_esc", "123456789012\033", -2, -2, 16, "123456789012");
+        one("width_ascii", "123", 2, 2, -1, "12");
+        one("width_double", "a\343\201\201", 2, 1, -1, "a");
+        one("double_fit", "a\343\201\201", 3, 3, 4, "a\343\201\201");
+        one("double_spc", "a\343\201\201", 4, 3, 4, "a\343\201\201");
+}