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6abbc429da
Rather than handling zlib handling manually, use find_package from CMake to find zlib properly. Use this to normalize the LLVM_ENABLE_ZLIB, HAVE_ZLIB, HAVE_ZLIB_H. Furthermore, require zlib if LLVM_ENABLE_ZLIB is set to YES, which requires the distributor to explicitly select whether zlib is enabled or not. This simplifies the CMake handling and usage in the rest of the tooling. This is a reland of abb0075 with all followup changes and fixes that should address issues that were reported in PR44780. Differential Revision: https://reviews.llvm.org/D79219
77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
//===- llvm/unittest/Support/CompressionTest.cpp - Compression tests ------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements unit tests for the Compression functions.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Compression.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Config/config.h"
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#include "llvm/Support/Error.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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#if LLVM_ENABLE_ZLIB
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void TestZlibCompression(StringRef Input, int Level) {
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SmallString<32> Compressed;
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SmallString<32> Uncompressed;
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Error E = zlib::compress(Input, Compressed, Level);
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EXPECT_FALSE(E);
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consumeError(std::move(E));
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// Check that uncompressed buffer is the same as original.
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E = zlib::uncompress(Compressed, Uncompressed, Input.size());
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EXPECT_FALSE(E);
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consumeError(std::move(E));
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EXPECT_EQ(Input, Uncompressed);
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if (Input.size() > 0) {
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// Uncompression fails if expected length is too short.
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E = zlib::uncompress(Compressed, Uncompressed, Input.size() - 1);
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EXPECT_EQ("zlib error: Z_BUF_ERROR", llvm::toString(std::move(E)));
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}
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}
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TEST(CompressionTest, Zlib) {
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TestZlibCompression("", zlib::DefaultCompression);
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TestZlibCompression("hello, world!", zlib::NoCompression);
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TestZlibCompression("hello, world!", zlib::BestSizeCompression);
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TestZlibCompression("hello, world!", zlib::BestSpeedCompression);
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TestZlibCompression("hello, world!", zlib::DefaultCompression);
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const size_t kSize = 1024;
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char BinaryData[kSize];
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for (size_t i = 0; i < kSize; ++i) {
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BinaryData[i] = i & 255;
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}
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StringRef BinaryDataStr(BinaryData, kSize);
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TestZlibCompression(BinaryDataStr, zlib::NoCompression);
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TestZlibCompression(BinaryDataStr, zlib::BestSizeCompression);
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TestZlibCompression(BinaryDataStr, zlib::BestSpeedCompression);
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TestZlibCompression(BinaryDataStr, zlib::DefaultCompression);
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}
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TEST(CompressionTest, ZlibCRC32) {
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EXPECT_EQ(
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0x414FA339U,
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zlib::crc32(StringRef("The quick brown fox jumps over the lazy dog")));
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}
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#endif
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}
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