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add function to calc crc poly

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This commit is contained in:
Wang Yaofu
2021-08-25 18:46:12 +08:00
committed by GitHub
parent b5bdf3a523
commit a3fdcc0bf6
1 changed files with 66 additions and 2 deletions
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unit-test/crc_test.cpp
+66 -2
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@@ -6,11 +6,27 @@
*/
#include "ut/test_harness.h"
#include "../crc/crc8.h"
#include "../crc/crc16.h"
#include "../crc/crc32.h"
#include "../crc/crc64.h"
#include "../crc/crc_poly.h"
#include <iostream>
TEST(CRC8Test, BasicTest)
{
const char* inData = "123456789";
uint8_t expect = 0xa2;
EXPECT_EQ(crc8_msb(inData, 9), expect);
const char* data = "Hello World!!!";
expect = 0x68;
EXPECT_EQ(crc8_msb(data, strlen(data)), expect);
expect = 0x2c;
EXPECT_EQ(crc8_lsb(data, strlen(data)), expect);
}
TEST(CRC16Test, BasicTest)
{
const char* inData = "123456789";
@@ -22,7 +38,7 @@ TEST(CRC16Test, BasicTest)
TEST(CRC32Test, BasicTest)
{
const char* inData = "123456789";
uint32_t expect = 3421780262 ;
uint32_t expect = 0xCBF43926;
EXPECT_EQ(crc32(inData, 9), expect);
}
@@ -31,6 +47,54 @@ TEST(CRC64Test, BasicTest)
{
const char* inData = "123456789";
uint64_t expect = 16845390139448941002L;
uint64_t expect = 0xe9c6d914c4b8d9caL;
EXPECT_EQ(crc64(inData, 9), expect);
}
TEST(CRC8PolyTest, BasicTest)
{
uint8_t poly = 0x31;
uint8_t crcTab[0xFF+1] = {0};
uint8_t expect = 0x00;
EXPECT_EQ(crc8_poly_msb(poly, 0), expect);
expect = 0x31;
EXPECT_EQ(crc8_poly_msb(poly, 1), expect);
expect = 0xac;
EXPECT_EQ(crc8_poly_msb(poly, 0xFF), expect);
/**
for (int i = 0; i <= 0xff; ++i) {
if (i % 8 == 0) {
printf("\n");
}
crcTab[i] = crc8_poly_lsb(poly, i);
printf("0x%.2x, ", crcTab[i]);
}
*/
}
TEST(CRC16PolyTest, BasicTest)
{
// poly = x^16 + x^12 + x^5 + 1 = 0x1021
uint16_t poly = 0x1021;
uint16_t crcTab[0xFF+1] = {0};
uint16_t expect = 0x0000;
EXPECT_EQ(crc16_poly_msb(poly, 0), expect);
expect = 0x1021;
EXPECT_EQ(crc16_poly_msb(poly, 1), expect);
expect = 0x1ef0;
EXPECT_EQ(crc16_poly_msb(poly, 0xFF), expect);
}
TEST(CRC32PolyTest, BasicTest)
{
uint32_t poly = 0xedb88320;
uint32_t crcTab[0xFF+1] = {0};
uint32_t expect = 0x00000000L;
EXPECT_EQ(crc32_poly(poly, 0), expect);
expect = 0x77073096L;
EXPECT_EQ(crc32_poly(poly, 1), expect);
expect = 0x2d02ef8dL;
EXPECT_EQ(crc32_poly(poly, 0xFF), expect);
}