utils: add hexparse test

Change-Id: Ic95ab00b57d54905a235109561c00419161cf4bc
diff --git a/tests/utils/utils_test.c b/tests/utils/utils_test.c
index 1a79baa..e3d6221 100644
--- a/tests/utils/utils_test.c
+++ b/tests/utils/utils_test.c
@@ -43,6 +43,103 @@
 	printf("%s\n", osmo_hexdump_nospc(data, ARRAY_SIZE(data)));
 }
 
+static void hexparse_test(void)
+{
+	int i;
+	int rc;
+	uint8_t data[256];
+
+	printf("\nHexparse 0..255 in lower case\n");
+	memset(data, 0, sizeof(data));
+	rc = osmo_hexparse(
+		"000102030405060708090a0b0c0d0e0f"
+		"101112131415161718191a1b1c1d1e1f"
+		"202122232425262728292a2b2c2d2e2f"
+		"303132333435363738393a3b3c3d3e3f"
+		"404142434445464748494a4b4c4d4e4f"
+		"505152535455565758595a5b5c5d5e5f"
+		"606162636465666768696a6b6c6d6e6f"
+		"707172737475767778797a7b7c7d7e7f"
+		"808182838485868788898a8b8c8d8e8f"
+		"909192939495969798999a9b9c9d9e9f"
+		"a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
+		"b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
+		"c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
+		"d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
+		"e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
+		"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"
+		, data, sizeof(data));
+	printf("rc = %d\n", rc);
+	printf("--> %s\n\n", osmo_hexdump(data, sizeof(data)));
+	for (i = 0; i < sizeof(data); i++)
+		OSMO_ASSERT(data[i] == i);
+
+	printf("Hexparse 0..255 in upper case\n");
+	memset(data, 0, sizeof(data));
+	rc = osmo_hexparse(
+		"000102030405060708090A0B0C0D0E0F"
+		"101112131415161718191A1B1C1D1E1F"
+		"202122232425262728292A2B2C2D2E2F"
+		"303132333435363738393A3B3C3D3E3F"
+		"404142434445464748494A4B4C4D4E4F"
+		"505152535455565758595A5B5C5D5E5F"
+		"606162636465666768696A6B6C6D6E6F"
+		"707172737475767778797A7B7C7D7E7F"
+		"808182838485868788898A8B8C8D8E8F"
+		"909192939495969798999A9B9C9D9E9F"
+		"A0A1A2A3A4A5A6A7A8A9AAABACADAEAF"
+		"B0B1B2B3B4B5B6B7B8B9BABBBCBDBEBF"
+		"C0C1C2C3C4C5C6C7C8C9CACBCCCDCECF"
+		"D0D1D2D3D4D5D6D7D8D9DADBDCDDDEDF"
+		"E0E1E2E3E4E5E6E7E8E9EAEBECEDEEEF"
+		"F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF"
+		, data, sizeof(data));
+	printf("rc = %d\n", rc);
+	printf("--> %s\n\n", osmo_hexdump(data, sizeof(data)));
+	for (i = 0; i < sizeof(data); i++)
+		OSMO_ASSERT(data[i] == i);
+
+	printf("Hexparse 0..255 in mixed case\n");
+	memset(data, 0, sizeof(data));
+	rc = osmo_hexparse(
+		"000102030405060708090A0B0C0D0E0F"
+		"101112131415161718191A1B1C1D1E1F"
+		"202122232425262728292A2B2C2D2E2F"
+		"303132333435363738393a3b3c3d3e3f"
+		"404142434445464748494A4B4C4D4E4F"
+		"505152535455565758595a5b5c5d5e5f"
+		"606162636465666768696A6B6C6D6E6F"
+		"707172737475767778797A7B7C7D7E7F"
+		"808182838485868788898A8B8C8D8E8F"
+		"909192939495969798999A9B9C9D9E9F"
+		"A0A1A2A3a4a5a6a7a8a9AAABACADAEAF"
+		"B0B1B2B3b4b5b6b7b8b9BABBBCBDBEBF"
+		"C0C1C2C3c4c5c6c7c8c9CACBCCCDCECF"
+		"D0D1D2D3d4d5d6d7d8d9DADBDCDDDEDF"
+		"E0E1E2E3e4e5e6e7e8e9EAEBECEDEEEF"
+		"F0F1F2F3f4f5f6f7f8f9FAFBFCFDFEFF"
+		, data, sizeof(data));
+	printf("rc = %d\n", rc);
+	printf("--> %s\n\n", osmo_hexdump(data, sizeof(data)));
+	for (i = 0; i < sizeof(data); i++)
+		OSMO_ASSERT(data[i] == i);
+
+	printf("Hexparse with buffer too short\n");
+	memset(data, 0, sizeof(data));
+	rc = osmo_hexparse("000102030405060708090a0b0c0d0e0f", data, 15);
+	printf("rc = %d\n", rc);
+
+	printf("Hexparse with uneven amount of digits\n");
+	memset(data, 0, sizeof(data));
+	rc = osmo_hexparse("000102030405060708090a0b0c0d0e0", data, 16);
+	printf("rc = %d\n", rc);
+
+	printf("Hexparse with invalid char\n");
+	memset(data, 0, sizeof(data));
+	rc = osmo_hexparse("0001020304050X0708090a0b0c0d0e0f", data, 16);
+	printf("rc = %d\n", rc);
+}
+
 static void test_idtag_parsing(void)
 {
 	struct tlv_parsed tvp;
@@ -103,6 +200,7 @@
 	log_init(&log_info, NULL);
 
 	hexdump_test();
+	hexparse_test();
 	test_idtag_parsing();
 	return 0;
 }