mirror of https://github.com/acidanthera/audk.git
65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
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/** @file
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Unit tests for BaseLib's checksum capabilities.
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Copyright (c) 2023 Pedro Falcato. All rights reserved<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <gtest/gtest.h>
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extern "C" {
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#include <Base.h>
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#include <Library/BaseLib.h>
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}
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// Precomputed crc32c and crc16-ansi for "hello" (without the null byte)
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constexpr STATIC UINT32 mHelloCrc32c = 0x9A71BB4C;
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constexpr STATIC UINT16 mHelloCrc16 = 0x34F6;
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TEST (Crc32c, BasicCheck) {
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// Note: The magic numbers below are precomputed checksums
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// Check for basic operation on even and odd numbers of bytes
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EXPECT_EQ (CalculateCrc32c ("hello", 5, 0), mHelloCrc32c);
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EXPECT_EQ (
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CalculateCrc32c ("longlonglonglonglong", sizeof ("longlonglonglonglong") - 1, 0),
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0xC50F869D
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);
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EXPECT_EQ (CalculateCrc32c ("h", 1, 0), 0xB96298FC);
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// Check if a checksum with no bytes correctly yields 0
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EXPECT_EQ (CalculateCrc32c ("", 0, 0), 0U);
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}
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TEST (Crc32c, MultipartCheck) {
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// Test multi-part crc32c calculation. So that given a string of bytes
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// s[N], crc32c(s, N, 0) == crc32c(s[N - 1], 1, crc32c(s, N - 1, 0))
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// and all other sorts of combinations one might imagine.
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UINT32 val;
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val = CalculateCrc32c ("hel", 3, 0);
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EXPECT_EQ (CalculateCrc32c (&"hello"[3], 2, val), mHelloCrc32c);
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}
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TEST (Crc16, BasicCheck) {
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// Note: The magic numbers below are precomputed checksums
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// Check for basic operation on even and odd numbers of bytes
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EXPECT_EQ (CalculateCrc16Ansi ("hello", 5, CRC16ANSI_INIT), mHelloCrc16);
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EXPECT_EQ (
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CalculateCrc16Ansi ("longlonglonglonglong", sizeof ("longlonglonglonglong") - 1, CRC16ANSI_INIT),
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0xF723
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);
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EXPECT_EQ (CalculateCrc16Ansi ("h", 1, CRC16ANSI_INIT), 0xAEBE);
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// Check if a checksum with no bytes correctly yields CRC16ANSI_INIT
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EXPECT_EQ (CalculateCrc16Ansi ("", 0, CRC16ANSI_INIT), CRC16ANSI_INIT);
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}
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TEST (Crc16, MultipartCheck) {
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// Test multi-part crc16 calculation. So that given a string of bytes
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// s[N], crc16(s, N, 0) == crc16(s[N - 1], 1, crc16(s, N - 1, 0))
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// and all other sorts of combinations one might imagine.
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UINT16 val;
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val = CalculateCrc16Ansi ("hel", 3, CRC16ANSI_INIT);
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EXPECT_EQ (CalculateCrc16Ansi (&"hello"[3], 2, val), mHelloCrc16);
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}
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