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test: Add more CRC tests #1235

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test: Add more CRC tests #1235

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5296ccb
test: Factor out the common crc testing code
vlstill Mar 18, 2024
d185b86
Add tests from p4lang/p4c#4526
vlstill Mar 18, 2024
08ab190
Fix compilation
vlstill Mar 18, 2024
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64 changes: 35 additions & 29 deletions tests/test_calculations.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
#include <random>
#include <string>
#include <vector>
#include <initializer_list>

#include "crc_map.h"

Expand Down Expand Up @@ -434,43 +435,48 @@ TEST(HashTest, Cksum16) {
ASSERT_EQ(expected, output);
}

TEST(HashTest, Crc16) {
const auto ptr = CalculationsMap::get_instance()->get_copy("crc16");
ASSERT_NE(nullptr, ptr);

const unsigned char input_buffer[] = {0x0b, 0xb8, 0x1f, 0x90};
const uint16_t expected = 0x5d8a;
uint32_t calcCrc(const char *kind, std::initializer_list<unsigned char> data) {
const auto ptr = CalculationsMap::get_instance()->get_copy(kind);
EXPECT_NE(nullptr, ptr);
if (!ptr) return -1;

const uint16_t output = ptr->output(
reinterpret_cast<const char *>(input_buffer), sizeof(input_buffer));
return ptr->output(reinterpret_cast<const char *>(&*data.begin()), data.size());
}

ASSERT_EQ(expected, output);
TEST(HashTest, Crc16) {
EXPECT_EQ(calcCrc("crc16", {0x0b, 0xb8, 0x1f, 0x90}), uint32_t(0x5d8a));
EXPECT_EQ(calcCrc("crc16", {}), uint16_t(0x0000));
EXPECT_EQ(calcCrc("crc16", {0}), uint16_t(0x0000));
EXPECT_EQ(calcCrc("crc16", {0, 0, 0, 0, 0}), uint16_t(0x0000));
EXPECT_EQ(calcCrc("crc16", {'f', 'o', 'o', 'o'}), uint16_t(0x4943));
EXPECT_EQ(calcCrc("crc16", {'a'}), uint16_t(0xE8C1));
EXPECT_EQ(calcCrc("crc16", {'f', 'o', 'o', 'b', 'a', 'r'}), uint16_t(0xB0C8));
EXPECT_EQ(calcCrc("crc16", {'f', 'o', 'o', 'b', 'a', 'r', '%', '1', '4', '2', 'q', 'r', 's'}),
uint16_t(0x3DA9));
}

TEST(HashTest, CrcCCITT) {
const auto ptr = CalculationsMap::get_instance()->get_copy("crcCCITT");
ASSERT_NE(nullptr, ptr);

const unsigned char input_buffer[] = {0x0b, 0xb8, 0x1f, 0x90};
const uint16_t expected = 0x5d75;

const uint16_t output = ptr->output(
reinterpret_cast<const char *>(input_buffer), sizeof(input_buffer));

ASSERT_EQ(expected, output);
EXPECT_EQ(calcCrc("crcCCITT", {0x0b, 0xb8, 0x1f, 0x90}), uint32_t(0x5d75));
EXPECT_EQ(calcCrc("crcCCITT", {}), uint16_t(0xFFFF));
EXPECT_EQ(calcCrc("crcCCITT", {0}), uint16_t(0xE1F0));
EXPECT_EQ(calcCrc("crcCCITT", {0, 0, 0, 0, 0}), uint16_t(0x110C));
EXPECT_EQ(calcCrc("crcCCITT", {'f', 'o', 'o', '0'}), uint16_t(0xCB8C));
EXPECT_EQ(calcCrc("crcCCITT", {'a'}), uint16_t(0x9D77));
EXPECT_EQ(calcCrc("crcCCITT", {'f', 'o', 'o', 'b', 'a', 'r'}), uint16_t(0xBE35));
EXPECT_EQ(calcCrc("crcCCITT", {'f', 'o', 'o', 'b', 'a', 'r', '%', '1', '4', '2', 'q', 'r', 's'}),
uint16_t(0x5A92));
}

TEST(HashTest, Crc32) {
const auto ptr = CalculationsMap::get_instance()->get_copy("crc32");
ASSERT_NE(nullptr, ptr);

const unsigned char input_buffer[] = {0x0b, 0xb8, 0x1f, 0x90};
const uint32_t expected = 0x005d6a6f;

const uint32_t output = ptr->output(
reinterpret_cast<const char *>(input_buffer), sizeof(input_buffer));

ASSERT_EQ(expected, output);
EXPECT_EQ(calcCrc("crc32", {0x0b, 0xb8, 0x1f, 0x90}), uint32_t(0x005d6a6f));
EXPECT_EQ(calcCrc("crc32", {}), uint32_t(0x00000000));
EXPECT_EQ(calcCrc("crc32", {0}), uint32_t(0xD202EF8D));
EXPECT_EQ(calcCrc("crc32", {0, 0, 0, 0, 0}), uint32_t(0xC622F71D));
EXPECT_EQ(calcCrc("crc32", {'f', 'o', 'o', 'o'}), uint32_t(0x43EAF07F));
EXPECT_EQ(calcCrc("crc32", {'a'}), uint32_t(0xE8B7BE43));
EXPECT_EQ(calcCrc("crc32", {'f', 'o', 'o', 'b', 'a', 'r'}), uint32_t(0x9EF61F95));
EXPECT_EQ(calcCrc("crc32", {'f', 'o', 'o', 'b', 'a', 'r', '%', '1', '4', '2', 'q', 'r', 's'}),
uint32_t(0x95E1D00B));
}

TEST(HashTest, Crc16Custom) {
Expand Down
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