70c7555f64
lzma_vli is unsigned so trying a signed value results in a compiler warning from -Wsign-conversion. (lzma_vli)-1 equals to LZMA_VLI_UNKNOWN anyway which is the next assertion.
310 lines
9.4 KiB
C
310 lines
9.4 KiB
C
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
/// \file test_vli.c
|
|
/// \brief Tests liblzma vli functions
|
|
//
|
|
// Author: Jia Tan
|
|
//
|
|
// This file has been put into the public domain.
|
|
// You can do whatever you want with this file.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "tests.h"
|
|
|
|
|
|
// Pre-encoded VLI values for testing
|
|
// VLI can have between 1 and 9 bytes when encoded
|
|
// They are encoded little endian where all but the last
|
|
// byte must have the leading 1 bit set
|
|
static const uint8_t one_byte[1] = {0x25};
|
|
static const lzma_vli one_byte_value = 37;
|
|
|
|
static const uint8_t two_bytes[2] = {0x80, 0x56};
|
|
static const lzma_vli two_byte_value = 11008;
|
|
|
|
static const uint8_t three_bytes[3] = {0x99, 0x92, 0x20};
|
|
static const lzma_vli three_byte_value = 526617;
|
|
|
|
static const uint8_t four_bytes[4] = {0x97, 0x83, 0x94, 0x47};
|
|
static const lzma_vli four_byte_value = 149225879;
|
|
|
|
static const uint8_t five_bytes[5] = {0xA6, 0x92, 0x88, 0x89, 0x32};
|
|
static const lzma_vli five_byte_value = 13440780582;
|
|
|
|
static const uint8_t six_bytes[6] = {0xA9, 0x84, 0x99, 0x82, 0x94, 0x12};
|
|
static const lzma_vli six_byte_value = 623848604201;
|
|
|
|
static const uint8_t seven_bytes[7] = {0x90, 0x80, 0x90, 0x80, 0x90, 0x80,
|
|
0x79};
|
|
static const lzma_vli seven_byte_value = 532167923073040;
|
|
|
|
static const uint8_t eight_bytes[8] = {0x91, 0x87, 0xF2, 0xB2, 0xC2, 0xD2,
|
|
0x93, 0x63};
|
|
static const lzma_vli eight_byte_value = 55818443594433425;
|
|
|
|
static const uint8_t nine_bytes[9] = {0x81, 0x91, 0xA1, 0xB1, 0xC1, 0xD1,
|
|
0xE1, 0xF1, 0x1};
|
|
static const lzma_vli nine_byte_value = 136100349976529025;
|
|
|
|
|
|
static void
|
|
test_lzma_vli_size(void)
|
|
{
|
|
// First test invalid VLI values (should return 0)
|
|
// VLI UNKNOWN is an invalid VLI
|
|
assert_uint_eq(lzma_vli_size(LZMA_VLI_UNKNOWN), 0);
|
|
// Loop over a few VLI values just over the maximum
|
|
for (uint64_t i = LZMA_VLI_MAX + 1; i < LZMA_VLI_MAX + 10; i++)
|
|
assert_uint_eq(lzma_vli_size(i), 0);
|
|
|
|
// Number should increment every seven set bits
|
|
lzma_vli vli = 1;
|
|
for (uint32_t i = 1; i < LZMA_VLI_BYTES_MAX; i++, vli <<= 7) {
|
|
// Test the base value and a few others around it
|
|
assert_uint_eq(lzma_vli_size(vli), i);
|
|
assert_uint_eq(lzma_vli_size(vli * 2), i);
|
|
assert_uint_eq(lzma_vli_size(vli + 10), i);
|
|
assert_uint_eq(lzma_vli_size(vli * 3 + 39), i);
|
|
}
|
|
}
|
|
|
|
|
|
// Helper function for test_lzma_vli_encode
|
|
// Encodes an input VLI and compares against a pre-computed value
|
|
static void
|
|
encode_single_call_mode(lzma_vli input, const uint8_t *expected,
|
|
uint32_t expected_len)
|
|
{
|
|
uint8_t out[LZMA_VLI_BYTES_MAX];
|
|
size_t out_pos = 0;
|
|
assert_lzma_ret(lzma_vli_encode(input, NULL, out, &out_pos,
|
|
expected_len), LZMA_OK);
|
|
assert_uint_eq(out_pos, expected_len);
|
|
assert_array_eq(out, expected, expected_len);
|
|
}
|
|
|
|
|
|
// Helper function for test_lzma_vli_encode
|
|
// Encodes an input VLI one byte at a time with the multi call
|
|
// method. Then compares agaist a pre-computed value
|
|
static void
|
|
encode_multi_call_mode(lzma_vli input, const uint8_t *expected,
|
|
uint32_t expected_len)
|
|
{
|
|
uint8_t out[LZMA_VLI_BYTES_MAX];
|
|
size_t out_pos = 0;
|
|
size_t vli_pos = 0;
|
|
|
|
for (uint32_t i = 1; i < expected_len; i++) {
|
|
assert_lzma_ret(lzma_vli_encode(input, &vli_pos, out,
|
|
&out_pos, i), LZMA_OK);
|
|
assert_uint_eq(out_pos, i);
|
|
assert_uint_eq(vli_pos, i);
|
|
}
|
|
assert_lzma_ret(lzma_vli_encode(input, &vli_pos, out, &out_pos,
|
|
expected_len), LZMA_STREAM_END);
|
|
assert_uint_eq(out_pos, expected_len);
|
|
assert_uint_eq(vli_pos, expected_len);
|
|
assert_array_eq(out, expected, expected_len);
|
|
}
|
|
|
|
|
|
static void
|
|
test_lzma_vli_encode(void)
|
|
{
|
|
size_t vli_pos = 0;
|
|
uint8_t out[LZMA_VLI_BYTES_MAX];
|
|
uint8_t zeros[LZMA_VLI_BYTES_MAX];
|
|
memzero(out, LZMA_VLI_BYTES_MAX);
|
|
memzero(zeros, LZMA_VLI_BYTES_MAX);
|
|
size_t out_pos = 0;
|
|
|
|
// First test invalid input parameters
|
|
// VLI invalid
|
|
assert_lzma_ret(lzma_vli_encode(LZMA_VLI_UNKNOWN, &vli_pos, out,
|
|
&out_pos, sizeof(out)), LZMA_PROG_ERROR);
|
|
// Failure should not change params
|
|
assert_uint_eq(vli_pos, 0);
|
|
assert_uint_eq(out_pos, 0);
|
|
assert_array_eq(out, zeros, LZMA_VLI_BYTES_MAX);
|
|
|
|
assert_lzma_ret(lzma_vli_encode(LZMA_VLI_MAX + 1, &vli_pos, out,
|
|
&out_pos, sizeof(out)), LZMA_PROG_ERROR);
|
|
assert_uint_eq(vli_pos, 0);
|
|
assert_uint_eq(out_pos, 0);
|
|
assert_array_eq(out, zeros, LZMA_VLI_BYTES_MAX);
|
|
|
|
// 0 output size
|
|
assert_lzma_ret(lzma_vli_encode(one_byte_value, &vli_pos, out,
|
|
&out_pos, 0), LZMA_BUF_ERROR);
|
|
assert_uint_eq(vli_pos, 0);
|
|
assert_uint_eq(out_pos, 0);
|
|
assert_array_eq(out, zeros, LZMA_VLI_BYTES_MAX);
|
|
|
|
// Size of VLI does not fit in buffer
|
|
size_t phony_out_pos = 3;
|
|
assert_lzma_ret(lzma_vli_encode(one_byte_value, NULL, out,
|
|
&phony_out_pos, 2), LZMA_PROG_ERROR);
|
|
|
|
assert_lzma_ret(lzma_vli_encode(LZMA_VLI_MAX / 2, NULL, out,
|
|
&out_pos, 2), LZMA_PROG_ERROR);
|
|
|
|
// Test single-call mode (using vli_pos as NULL)
|
|
encode_single_call_mode(one_byte_value, one_byte,
|
|
sizeof(one_byte));
|
|
encode_single_call_mode(two_byte_value, two_bytes,
|
|
sizeof(two_bytes));
|
|
encode_single_call_mode(three_byte_value, three_bytes,
|
|
sizeof(three_bytes));
|
|
encode_single_call_mode(four_byte_value, four_bytes,
|
|
sizeof(four_bytes));
|
|
encode_single_call_mode(five_byte_value, five_bytes,
|
|
sizeof(five_bytes));
|
|
encode_single_call_mode(six_byte_value, six_bytes,
|
|
sizeof(six_bytes));
|
|
encode_single_call_mode(seven_byte_value, seven_bytes,
|
|
sizeof(seven_bytes));
|
|
encode_single_call_mode(eight_byte_value, eight_bytes,
|
|
sizeof(eight_bytes));
|
|
encode_single_call_mode(nine_byte_value, nine_bytes,
|
|
sizeof(nine_bytes));
|
|
|
|
// Test multi-call mode
|
|
encode_multi_call_mode(one_byte_value, one_byte,
|
|
sizeof(one_byte));
|
|
encode_multi_call_mode(two_byte_value, two_bytes,
|
|
sizeof(two_bytes));
|
|
encode_multi_call_mode(three_byte_value, three_bytes,
|
|
sizeof(three_bytes));
|
|
encode_multi_call_mode(four_byte_value, four_bytes,
|
|
sizeof(four_bytes));
|
|
encode_multi_call_mode(five_byte_value, five_bytes,
|
|
sizeof(five_bytes));
|
|
encode_multi_call_mode(six_byte_value, six_bytes,
|
|
sizeof(six_bytes));
|
|
encode_multi_call_mode(seven_byte_value, seven_bytes,
|
|
sizeof(seven_bytes));
|
|
encode_multi_call_mode(eight_byte_value, eight_bytes,
|
|
sizeof(eight_bytes));
|
|
encode_multi_call_mode(nine_byte_value, nine_bytes,
|
|
sizeof(nine_bytes));
|
|
}
|
|
|
|
|
|
static void
|
|
decode_single_call_mode(const uint8_t *input, uint32_t input_len,
|
|
lzma_vli expected)
|
|
{
|
|
lzma_vli out = 0;
|
|
size_t in_pos = 0;
|
|
|
|
assert_lzma_ret(lzma_vli_decode(&out, NULL, input, &in_pos,
|
|
input_len), LZMA_OK);
|
|
assert_uint_eq(in_pos, input_len);
|
|
assert_uint_eq(out, expected);
|
|
}
|
|
|
|
|
|
static void
|
|
decode_multi_call_mode(const uint8_t *input, uint32_t input_len,
|
|
lzma_vli expected)
|
|
{
|
|
lzma_vli out = 0;
|
|
size_t in_pos = 0;
|
|
size_t vli_pos = 0;
|
|
|
|
for (uint32_t i = 1; i < input_len; i++) {
|
|
assert_lzma_ret(lzma_vli_decode(&out, &vli_pos, input,
|
|
&in_pos, i), LZMA_OK);
|
|
assert_uint_eq(in_pos, i);
|
|
assert_uint_eq(vli_pos, i);
|
|
}
|
|
|
|
assert_lzma_ret(lzma_vli_decode(&out, &vli_pos, input, &in_pos,
|
|
input_len), LZMA_STREAM_END);
|
|
assert_uint_eq(in_pos, input_len);
|
|
assert_uint_eq(vli_pos, input_len);
|
|
assert_uint_eq(out, expected);
|
|
}
|
|
|
|
static void
|
|
test_lzma_vli_decode(void)
|
|
{
|
|
lzma_vli out = 0;
|
|
size_t in_pos = 0;
|
|
|
|
// First test invalid input params
|
|
// 0 in_size
|
|
assert_lzma_ret(lzma_vli_decode(&out, NULL, one_byte, &in_pos, 0),
|
|
LZMA_DATA_ERROR);
|
|
assert_uint_eq(out, 0);
|
|
assert_uint_eq(in_pos, 0);
|
|
|
|
// VLI encoded is invalid (last digit has leading 1 set)
|
|
uint8_t invalid_vli[3] = {0x80, 0x80, 0x80};
|
|
assert_lzma_ret(lzma_vli_decode(&out, NULL, invalid_vli, &in_pos,
|
|
sizeof(invalid_vli)), LZMA_DATA_ERROR);
|
|
|
|
// Bad vli_pos
|
|
size_t vli_pos = LZMA_VLI_BYTES_MAX;
|
|
assert_lzma_ret(lzma_vli_decode(&out, &vli_pos, invalid_vli, &in_pos,
|
|
sizeof(invalid_vli)), LZMA_PROG_ERROR);
|
|
|
|
// Bad in_pos
|
|
in_pos = sizeof(invalid_vli);
|
|
assert_lzma_ret(lzma_vli_decode(&out, &in_pos, invalid_vli, &in_pos,
|
|
sizeof(invalid_vli)), LZMA_BUF_ERROR);
|
|
|
|
// Test single call mode
|
|
decode_single_call_mode(one_byte, sizeof(one_byte),
|
|
one_byte_value);
|
|
decode_single_call_mode(two_bytes, sizeof(two_bytes),
|
|
two_byte_value);
|
|
decode_single_call_mode(three_bytes, sizeof(three_bytes),
|
|
three_byte_value);
|
|
decode_single_call_mode(four_bytes, sizeof(four_bytes),
|
|
four_byte_value);
|
|
decode_single_call_mode(five_bytes, sizeof(five_bytes),
|
|
five_byte_value);
|
|
decode_single_call_mode(six_bytes, sizeof(six_bytes),
|
|
six_byte_value);
|
|
decode_single_call_mode(seven_bytes, sizeof(seven_bytes),
|
|
seven_byte_value);
|
|
decode_single_call_mode(eight_bytes, sizeof(eight_bytes),
|
|
eight_byte_value);
|
|
decode_single_call_mode(nine_bytes, sizeof(nine_bytes),
|
|
nine_byte_value);
|
|
|
|
// Test multi call mode
|
|
decode_multi_call_mode(one_byte, sizeof(one_byte),
|
|
one_byte_value);
|
|
decode_multi_call_mode(two_bytes, sizeof(two_bytes),
|
|
two_byte_value);
|
|
decode_multi_call_mode(three_bytes, sizeof(three_bytes),
|
|
three_byte_value);
|
|
decode_multi_call_mode(four_bytes, sizeof(four_bytes),
|
|
four_byte_value);
|
|
decode_multi_call_mode(five_bytes, sizeof(five_bytes),
|
|
five_byte_value);
|
|
decode_multi_call_mode(six_bytes, sizeof(six_bytes),
|
|
six_byte_value);
|
|
decode_multi_call_mode(seven_bytes, sizeof(seven_bytes),
|
|
seven_byte_value);
|
|
decode_multi_call_mode(eight_bytes, sizeof(eight_bytes),
|
|
eight_byte_value);
|
|
decode_multi_call_mode(nine_bytes, sizeof(nine_bytes),
|
|
nine_byte_value);
|
|
}
|
|
|
|
|
|
extern int
|
|
main(int argc, char **argv)
|
|
{
|
|
tuktest_start(argc, argv);
|
|
tuktest_run(test_lzma_vli_size);
|
|
tuktest_run(test_lzma_vli_encode);
|
|
tuktest_run(test_lzma_vli_decode);
|
|
return tuktest_end();
|
|
}
|