Initial Commit

libs/libgrapheme-2.0.2/test/utf8-encode.c

@@ -0,0 +1,93 @@
+/* See LICENSE file for copyright and license details. */
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "../grapheme.h"
+#include "util.h"
+
+static const struct {
+	uint_least32_t cp;      /* input codepoint */
+	char          *exp_arr; /* expected UTF-8 byte sequence */
+	size_t         exp_len; /* expected length of UTF-8 sequence */
+} enc_test[] = {
+	{
+		/* invalid codepoint (UTF-16 surrogate half) */
+		.cp      = UINT32_C(0xD800),
+		.exp_arr = (char *)(unsigned char[]){ 0xEF, 0xBF, 0xBD },
+		.exp_len = 3,
+	},
+	{
+		/* invalid codepoint (UTF-16-unrepresentable) */
+		.cp      = UINT32_C(0x110000),
+		.exp_arr = (char *)(unsigned char[]){ 0xEF, 0xBF, 0xBD },
+		.exp_len = 3,
+	},
+	{
+		/* codepoint encoded to a 1-byte sequence */
+		.cp      = 0x01,
+		.exp_arr = (char *)(unsigned char[]){ 0x01 },
+		.exp_len = 1,
+	},
+	{
+		/* codepoint encoded to a 2-byte sequence */
+		.cp      = 0xFF,
+		.exp_arr = (char *)(unsigned char[]){ 0xC3, 0xBF },
+		.exp_len = 2,
+	},
+	{
+		/* codepoint encoded to a 3-byte sequence */
+		.cp      = 0xFFF,
+		.exp_arr = (char *)(unsigned char[]){ 0xE0, 0xBF, 0xBF },
+		.exp_len = 3,
+	},
+	{
+		/* codepoint encoded to a 4-byte sequence */
+		.cp      = UINT32_C(0xFFFFF),
+		.exp_arr = (char *)(unsigned char[]){ 0xF3, 0xBF, 0xBF, 0xBF },
+		.exp_len = 4,
+	},
+};
+
+int
+main(int argc, char *argv[])
+{
+	size_t i, j, failed;
+
+	(void)argc;
+
+	/* UTF-8 encoder test */
+	for (i = 0, failed = 0; i < LEN(enc_test); i++) {
+		char arr[4];
+		size_t len;
+
+		len = grapheme_encode_utf8(enc_test[i].cp, arr, LEN(arr));
+
+		if (len != enc_test[i].exp_len ||
+		    memcmp(arr, enc_test[i].exp_arr, len)) {
+			fprintf(stderr, "%s, Failed test %zu: "
+			        "Expected (", argv[0], i);
+			for (j = 0; j < enc_test[i].exp_len; j++) {
+				fprintf(stderr, "0x%x",
+				        enc_test[i].exp_arr[j]);
+				if (j + 1 < enc_test[i].exp_len) {
+					fprintf(stderr, " ");
+				}
+			}
+			fprintf(stderr, "), but got (");
+			for (j = 0; j < len; j++) {
+				fprintf(stderr, "0x%x", arr[j]);
+				if (j + 1 < len) {
+					fprintf(stderr, " ");
+				}
+			}
+			fprintf(stderr, ").\n");
+			failed++;
+		}
+	}
+	printf("%s: %zu/%zu unit tests passed.\n", argv[0],
+	       LEN(enc_test) - failed, LEN(enc_test));
+
+	return (failed > 0) ? 1 : 0;
+}