pebble/tests/fw/util/test_sle.c
2025-01-27 11:38:16 -08:00

95 lines
2.1 KiB
C

/*
* Copyright 2024 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "clar.h"
#include "util/sle.h"
#include "stubs/stubs_passert.h"
void test_sle__simple(void) {
SLEDecodeContext ctx;
uint8_t buf[] = {
0xfd, // escape code
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0xfd, 0x00 // end
};
sle_decode_init(&ctx, buf);
uint8_t byte;
uint8_t expect = 0x00;
uint32_t count = 0;
while (sle_decode(&ctx, &byte)) {
cl_assert_equal_i(byte, expect++);
++count;
}
cl_assert_equal_i(count, 16);
}
void test_sle__short_zeros(void) {
SLEDecodeContext ctx;
uint8_t buf[] = {
0xfd, // escape code
0xfd, 0x5, // 5 zeroes
0xfd, 0x00 // end
};
sle_decode_init(&ctx, buf);
uint8_t byte;
uint32_t count = 0;
while (sle_decode(&ctx, &byte)) {
cl_assert_equal_i(byte, 0x0);
++count;
}
cl_assert_equal_i(count, 5);
}
void test_sle__long_zeros(void) {
SLEDecodeContext ctx;
uint8_t buf[] = {
0xfd, // escape code
0xfd, 0xff, 0xaa, // 32810 zeroes
0xfd, 0x00 // end
};
sle_decode_init(&ctx, buf);
uint8_t byte;
uint32_t count = 0;
while (sle_decode(&ctx, &byte)) {
cl_assert_equal_i(byte, 0x0);
++count;
}
cl_assert_equal_i(count, 32810);
}
void test_sle__escape_byte(void) {
SLEDecodeContext ctx;
uint8_t buf[] = {
0xfd, // escape code
0xfd, 0x01, // literal escape byte
0xfd, 0x00 // end
};
sle_decode_init(&ctx, buf);
uint8_t byte;
uint32_t count = 0;
while (sle_decode(&ctx, &byte)) {
cl_assert_equal_i(byte, 0xfd);
++count;
}
cl_assert_equal_i(count, 1);
}