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tests: Add base64 tests from §(Test Vectors) of RFC 4648

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While I’m here, we might as well check that we output what the RFC says
we should output.

https://tools.ietf.org/html/rfc4648#section-10

(We do.)

Signed-off-by: Philip Withnall <withnall@endlessm.com>
This commit is contained in:
Philip Withnall 2019-02-27 10:35:24 +00:00
parent f9dfddf8eb
commit 387e762879
1 changed files with 45 additions and 0 deletions
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45
glib/tests/base64.c
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@ -443,6 +443,49 @@ test_base64_decode_empty (void)
g_free (decoded);
}
/* Check all the RFC 4648 test vectors for base 64 encoding from §10.
* https://tools.ietf.org/html/rfc4648#section-10 */
static void
test_base64_encode_decode_rfc4648 (void)
{
const struct
{
const gchar *decoded; /* technically this should be a byte array, but all the test vectors are ASCII strings */
const gchar *encoded;
}
vectors[] =
{
{ "", "" },
{ "f", "Zg==" },
{ "fo", "Zm8=" },
{ "foo", "Zm9v" },
{ "foob", "Zm9vYg==" },
{ "fooba", "Zm9vYmE=" },
{ "foobar", "Zm9vYmFy" },
};
gsize i;
for (i = 0; i < G_N_ELEMENTS (vectors); i++)
{
gchar *encoded = NULL;
guchar *decoded = NULL;
gsize expected_decoded_len = strlen (vectors[i].decoded);
gsize decoded_len;
g_test_message ("Vector %" G_GSIZE_FORMAT ": %s", i, vectors[i].decoded);
encoded = g_base64_encode ((const guchar *) vectors[i].decoded, expected_decoded_len);
g_assert_cmpstr (encoded, ==, vectors[i].encoded);
decoded = g_base64_decode (encoded, &decoded_len);
g_assert_cmpstr ((gchar *) decoded, ==, vectors[i].decoded);
g_assert_cmpuint (decoded_len, ==, expected_decoded_len);
g_free (encoded);
g_free (decoded);
}
}
int
main (int argc, char *argv[])
{
@ -494,5 +537,7 @@ main (int argc, char *argv[])
g_test_add_func ("/base64/encode/empty", test_base64_encode_empty);
g_test_add_func ("/base64/decode/empty", test_base64_decode_empty);
g_test_add_func ("/base64/encode-decode/rfc4648", test_base64_encode_decode_rfc4648);
return g_test_run ();
}