1 ///////////////////////////////////////////////////////////////////////////////
3 /// \file test_stream_flags.c
4 /// \brief Tests Stream Header and Stream Footer coders
6 // Copyright (C) 2007 Lasse Collin
8 // This library is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Lesser General Public
10 // License as published by the Free Software Foundation; either
11 // version 2.1 of the License, or (at your option) any later version.
13 // This library is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // Lesser General Public License for more details.
18 ///////////////////////////////////////////////////////////////////////////////
23 static lzma_stream_flags known_flags
;
24 static lzma_stream_flags decoded_flags
;
25 static uint8_t buffer
[LZMA_STREAM_HEADER_SIZE
];
31 // TODO: This could require the specific error type as an argument.
32 // We could also test that lzma_stream_flags_compare() gives
33 // the correct return values in different situations.
34 return lzma_stream_flags_compare(&known_flags
, &decoded_flags
)
40 test_header_decoder(lzma_ret expected_ret
)
42 memcrap(&decoded_flags
, sizeof(decoded_flags
));
44 if (lzma_stream_header_decode(&decoded_flags
, buffer
) != expected_ret
)
47 if (expected_ret
!= LZMA_OK
)
50 // Header doesn't have Backward Size, so make
51 // lzma_stream_flags_compare() ignore it.
52 decoded_flags
.backward_size
= LZMA_VLI_UNKNOWN
;
60 memcrap(buffer
, sizeof(buffer
));
61 expect(lzma_stream_header_encode(&known_flags
, buffer
) == LZMA_OK
);
62 succeed(test_header_decoder(LZMA_OK
));
67 test_footer_decoder(lzma_ret expected_ret
)
69 memcrap(&decoded_flags
, sizeof(decoded_flags
));
71 if (lzma_stream_footer_decode(&decoded_flags
, buffer
) != expected_ret
)
74 if (expected_ret
!= LZMA_OK
)
84 memcrap(buffer
, sizeof(buffer
));
85 expect(lzma_stream_footer_encode(&known_flags
, buffer
) == LZMA_OK
);
86 succeed(test_footer_decoder(LZMA_OK
));
91 test_encode_invalid(void)
93 known_flags
.check
= LZMA_CHECK_ID_MAX
+ 1;
94 known_flags
.backward_size
= 1024;
96 expect(lzma_stream_header_encode(&known_flags
, buffer
)
99 expect(lzma_stream_footer_encode(&known_flags
, buffer
)
102 known_flags
.check
= (lzma_check
)(-1);
104 expect(lzma_stream_header_encode(&known_flags
, buffer
)
107 expect(lzma_stream_footer_encode(&known_flags
, buffer
)
110 known_flags
.check
= LZMA_CHECK_NONE
;
111 known_flags
.backward_size
= 0;
113 // Header encoder ignores backward_size.
114 expect(lzma_stream_header_encode(&known_flags
, buffer
) == LZMA_OK
);
116 expect(lzma_stream_footer_encode(&known_flags
, buffer
)
119 known_flags
.backward_size
= LZMA_VLI_MAX
;
121 expect(lzma_stream_header_encode(&known_flags
, buffer
) == LZMA_OK
);
123 expect(lzma_stream_footer_encode(&known_flags
, buffer
)
129 test_decode_invalid(void)
131 known_flags
.check
= LZMA_CHECK_NONE
;
132 known_flags
.backward_size
= 1024;
134 expect(lzma_stream_header_encode(&known_flags
, buffer
) == LZMA_OK
);
136 // Test 1 (invalid Magic Bytes)
138 succeed(test_header_decoder(LZMA_FORMAT_ERROR
));
141 // Test 2a (valid CRC32)
142 uint32_t crc
= lzma_crc32(buffer
+ 6, 2, 0);
143 integer_write_32(buffer
+ 8, crc
);
144 succeed(test_header_decoder(LZMA_OK
));
146 // Test 2b (invalid Stream Flags with valid CRC32)
148 crc
= lzma_crc32(buffer
+ 6, 2, 0);
149 integer_write_32(buffer
+ 8, crc
);
150 succeed(test_header_decoder(LZMA_OPTIONS_ERROR
));
152 // Test 3 (invalid CRC32)
153 expect(lzma_stream_header_encode(&known_flags
, buffer
) == LZMA_OK
);
155 succeed(test_header_decoder(LZMA_DATA_ERROR
));
157 // Test 4 (invalid Stream Flags with valid CRC32)
158 expect(lzma_stream_footer_encode(&known_flags
, buffer
) == LZMA_OK
);
160 crc
= lzma_crc32(buffer
+ 4, 6, 0);
161 integer_write_32(buffer
, crc
);
162 succeed(test_footer_decoder(LZMA_OPTIONS_ERROR
));
164 // Test 5 (invalid Magic Bytes)
165 expect(lzma_stream_footer_encode(&known_flags
, buffer
) == LZMA_OK
);
167 succeed(test_footer_decoder(LZMA_FORMAT_ERROR
));
175 known_flags
.backward_size
= 1024;
176 for (lzma_check check
= LZMA_CHECK_NONE
;
177 check
<= LZMA_CHECK_ID_MAX
; ++check
) {
183 test_encode_invalid();
184 test_decode_invalid();