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//===- DXContainerTest.cpp - Tests for DXContainerFile --------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/DXContainer.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/BinaryFormat/Magic.h"
#include "llvm/Support/MemoryBufferRef.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::object;
template <std::size_t X> MemoryBufferRef getMemoryBuffer(uint8_t Data[X]) {
StringRef Obj(reinterpret_cast<char *>(&Data[0]), X);
return MemoryBufferRef(Obj, "");
}
TEST(DXCFile, IdentifyMagic) {
{
StringRef Buffer("DXBC");
EXPECT_EQ(identify_magic(Buffer), file_magic::dxcontainer_object);
}
{
StringRef Buffer("DXBCBlahBlahBlah");
EXPECT_EQ(identify_magic(Buffer), file_magic::dxcontainer_object);
}
}
TEST(DXCFile, ParseHeaderErrors) {
uint8_t Buffer[] = {0x44, 0x58, 0x42, 0x43};
EXPECT_THAT_EXPECTED(
DXContainer::create(getMemoryBuffer<4>(Buffer)),
FailedWithMessage("Reading structure out of file bounds"));
}
TEST(DXCFile, EmptyFile) {
EXPECT_THAT_EXPECTED(
DXContainer::create(MemoryBufferRef(StringRef("", 0), "")),
FailedWithMessage("Reading structure out of file bounds"));
}
TEST(DXCFile, ParseHeader) {
uint8_t Buffer[] = {0x44, 0x58, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x70, 0x0D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
DXContainer C =
llvm::cantFail(DXContainer::create(getMemoryBuffer<32>(Buffer)));
EXPECT_TRUE(memcmp(C.getHeader().Magic, "DXBC", 4) == 0);
EXPECT_TRUE(memcmp(C.getHeader().FileHash.Digest,
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16) == 0);
EXPECT_EQ(C.getHeader().Version.Major, 1u);
EXPECT_EQ(C.getHeader().Version.Minor, 0u);
}
TEST(DXCFile, ParsePartMissingOffsets) {
uint8_t Buffer[] = {
0x44, 0x58, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x70, 0x0D, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
};
EXPECT_THAT_EXPECTED(
DXContainer::create(getMemoryBuffer<32>(Buffer)),
FailedWithMessage("Reading structure out of file bounds"));
}
TEST(DXCFile, ParsePartInvalidOffsets) {
// This test covers a case where the part offset is beyond the buffer size.
uint8_t Buffer[] = {
0x44, 0x58, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x70, 0x0D, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
};
EXPECT_THAT_EXPECTED(
DXContainer::create(getMemoryBuffer<36>(Buffer)),
FailedWithMessage("Part offset points beyond boundary of the file"));
}
TEST(DXCFile, ParsePartTooSmallBuffer) {
// This test covers a case where there is insufficent space to read a full
// part name, but the offset for the part is inside the buffer.
uint8_t Buffer[] = {0x44, 0x58, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x26, 0x0D, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x24, 0x00, 0x00, 0x00, 0x46, 0x4B};
EXPECT_THAT_EXPECTED(
DXContainer::create(getMemoryBuffer<38>(Buffer)),
FailedWithMessage("File not large enough to read part name"));
}
TEST(DXCFile, ParsePartNoSize) {
// This test covers a case where the part's header is readable, but the size
// the part extends beyond the boundaries of the file.
uint8_t Buffer[] = {0x44, 0x58, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x28, 0x0D, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00,
0x46, 0x4B, 0x45, 0x30, 0x00, 0x00};
EXPECT_THAT_EXPECTED(
DXContainer::create(getMemoryBuffer<42>(Buffer)),
FailedWithMessage("Reading part size out of file bounds"));
}
TEST(DXCFile, ParseOverlappingParts) {
// This test covers a case where a part's offset is inside the size range
// covered by the previous part.
uint8_t Buffer[] = {
0x44, 0x58, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00,
0x2C, 0x00, 0x00, 0x00, 0x46, 0x4B, 0x45, 0x30, 0x08, 0x00, 0x00, 0x00,
0x46, 0x4B, 0x45, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
EXPECT_THAT_EXPECTED(
DXContainer::create(getMemoryBuffer<60>(Buffer)),
FailedWithMessage(
"Part offset for part 1 begins before the previous part ends"));
}
TEST(DXCFile, ParseEmptyParts) {
uint8_t Buffer[] = {
0x44, 0x58, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x70, 0x0D, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x00,
0x44, 0x00, 0x00, 0x00, 0x4C, 0x00, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00,
0x5C, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00, 0x6C, 0x00, 0x00, 0x00,
0x46, 0x4B, 0x45, 0x30, 0x00, 0x00, 0x00, 0x00, 0x46, 0x4B, 0x45, 0x31,
0x00, 0x00, 0x00, 0x00, 0x46, 0x4B, 0x45, 0x32, 0x00, 0x00, 0x00, 0x00,
0x46, 0x4B, 0x45, 0x33, 0x00, 0x00, 0x00, 0x00, 0x46, 0x4B, 0x45, 0x34,
0x00, 0x00, 0x00, 0x00, 0x46, 0x4B, 0x45, 0x35, 0x00, 0x00, 0x00, 0x00,
0x46, 0x4B, 0x45, 0x36, 0x00, 0x00, 0x00, 0x00,
};
DXContainer C =
llvm::cantFail(DXContainer::create(getMemoryBuffer<116>(Buffer)));
EXPECT_EQ(C.getHeader().PartCount, 7u);
// All the part sizes are 0, which makes a nice test of the range based for
int ElementsVisited = 0;
for (auto Part : C) {
EXPECT_EQ(Part.Part.Size, 0u);
EXPECT_EQ(Part.Data.size(), 0u);
++ElementsVisited;
}
EXPECT_EQ(ElementsVisited, 7);
{
// These are all intended to be fake part names so that the parser doesn't
// try to parse the part data.
auto It = C.begin();
EXPECT_TRUE(memcmp(It->Part.Name, "FKE0", 4) == 0);
++It;
EXPECT_TRUE(memcmp(It->Part.Name, "FKE1", 4) == 0);
++It;
EXPECT_TRUE(memcmp(It->Part.Name, "FKE2", 4) == 0);
++It;
EXPECT_TRUE(memcmp(It->Part.Name, "FKE3", 4) == 0);
++It;
EXPECT_TRUE(memcmp(It->Part.Name, "FKE4", 4) == 0);
++It;
EXPECT_TRUE(memcmp(It->Part.Name, "FKE5", 4) == 0);
++It;
EXPECT_TRUE(memcmp(It->Part.Name, "FKE6", 4) == 0);
++It; // Don't increment past the end
EXPECT_TRUE(memcmp(It->Part.Name, "FKE6", 4) == 0);
}
}
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