test: add test for the combined base64/base64url decoder

src/test/test-hexdecoct.c

@@ -516,4 +516,33 @@ TEST(hexdump) {
         hexdump(stdout, data, sizeof(data));
 }
 
+TEST(base64withwithouturl) {
+        static const uint8_t plaintext[] = {
+                0xcc, 0xa1, 0x72, 0x22, 0xae, 0xda, 0x66, 0x7e, 0x04, 0xa6, 0xe0, 0x82,
+                0x9a, 0x97, 0x05, 0xf6, 0x33, 0xe0, 0x0f, 0xc2, 0x45, 0x13, 0x58, 0x3f,
+                0xc5, 0xf4, 0xf4, 0x31, 0xab, 0x3c, 0x5f, 0x83, 0x34, 0x5b, 0x27, 0x32,
+                0x8a, 0x04, 0x6c, 0x43, 0x82, 0x07, 0xe3, 0x2c, 0xac, 0xb9, 0xfb, 0xac,
+                0xd0, 0x03, 0x91, 0x42, 0xcb, 0xa4, 0xde, 0x87, 0x86, 0x85, 0x10, 0xbb,
+                0xb7, 0x5b, 0x4b, 0xc8, 0xa0, 0xf4, 0x22, 0x1d, 0x15, 0x71, 0x87, 0x9d,
+                0xbf, 0x9f, 0xa9, 0xf1, 0xee, 0xa2, 0xb6, 0xaa, 0xc8, 0xc3, 0x37, 0x9c,
+                0xbb, 0xdf, 0x3e, 0xac, 0xdc, 0x94, 0x54, 0x38, 0x56, 0x07, 0x34, 0xb4,
+                0x3c, 0xcc, 0x31, 0x13
+        };
+
+        _cleanup_free_ void *buffer = NULL;
+        size_t size;
+
+        /* This is regular base64 */
+        assert_se(unbase64mem("zKFyIq7aZn4EpuCCmpcF9jPgD8JFE1g/xfT0Mas8X4M0WycyigRsQ4IH4yysufus0AORQsuk3oeGhRC7t1tLyKD0Ih0VcYedv5+p8e6itqrIwzecu98+rNyUVDhWBzS0PMwxEw==", SIZE_MAX, &buffer, &size) >= 0);
+        assert_se(memcmp_nn(plaintext, sizeof(plaintext), buffer, size) == 0);
+        buffer = mfree(buffer);
+
+        /* This is the same but in base64url */
+        assert_se(unbase64mem("zKFyIq7aZn4EpuCCmpcF9jPgD8JFE1g_xfT0Mas8X4M0WycyigRsQ4IH4yysufus0AORQsuk3oeGhRC7t1tLyKD0Ih0VcYedv5-p8e6itqrIwzecu98-rNyUVDhWBzS0PMwxEw==", SIZE_MAX, &buffer, &size) >= 0);
+        assert_se(memcmp_nn(plaintext, sizeof(plaintext), buffer, size) == 0);
+
+        /* Hint: use xxd -i to generate the static C array from some data, and basenc --base64 + basenc
+         * --base64url to generate the correctly encoded base64 strings */
+}
+
 DEFINE_TEST_MAIN(LOG_INFO);