ElfTests.cpp File Reference

#include <folly/FileUtil.h>
#include <folly/experimental/TestUtil.h>
#include <folly/experimental/symbolizer/Elf.h>
#include <folly/portability/GTest.h>

Go to the source code of this file.

Classes
class	ElfTest

Functions
	TEST_F (ElfTest, IntegerValue)
	TEST_F (ElfTest, PointerValue)
	TEST_F (ElfTest, iterateProgramHeaders)
	TEST_F (ElfTest, TinyNonElfFile)
	TEST_F (ElfTest, NonElfScript)

Variables
uint64_t	kIntegerValue = 1234567890UL
const char *	kStringValue = "coconuts"

Function Documentation

TEST_F	(	ElfTest	,
		IntegerValue
	)

Definition at line 34 of file ElfTests.cpp.

References ElfTest::elfFile_, EXPECT_EQ, EXPECT_NE, folly::symbolizer::ElfFile::getSymbolByName(), folly::symbolizer::ElfFile::getSymbolValue(), kIntegerValue, and uint64_t.

                              {
  auto sym = elfFile_.getSymbolByName("kIntegerValue");
  EXPECT_NE(nullptr, sym.first) << "Failed to look up symbol kIntegerValue";
  EXPECT_EQ(kIntegerValue, elfFile_.getSymbolValue<uint64_t>(sym.second));
}

TEST_F	(	ElfTest	,
		PointerValue
	)

Definition at line 40 of file ElfTests.cpp.

References addr, ElfTest::elfFile_, EXPECT_NE, EXPECT_STREQ, folly::symbolizer::ElfFile::getAddressValue(), folly::symbolizer::ElfFile::getSymbolByName(), folly::symbolizer::ElfFile::getSymbolValue(), and kStringValue.

                              {
  auto sym = elfFile_.getSymbolByName("kStringValue");
  EXPECT_NE(nullptr, sym.first) << "Failed to look up symbol kStringValue";
  ElfW(Addr) addr = elfFile_.getSymbolValue<ElfW(Addr)>(sym.second);
  const char* str = &elfFile_.getAddressValue<const char>(addr);
  EXPECT_STREQ(kStringValue, str);
}

TEST_F	(	ElfTest	,
		iterateProgramHeaders
	)

Definition at line 48 of file ElfTests.cpp.

References ElfTest::elfFile_, EXPECT_GE, EXPECT_NE, h, and folly::symbolizer::ElfFile::iterateProgramHeaders().

                                       {
  auto phdr = elfFile_.iterateProgramHeaders(
      [](auto& h) { return h.p_type == PT_LOAD; });
  EXPECT_NE(nullptr, phdr);
  EXPECT_GE(phdr->p_filesz, 0);
}

TEST_F	(	ElfTest	,
		TinyNonElfFile
	)

Definition at line 55 of file ElfTests.cpp.

References folly::Range< Iter >::data(), EXPECT_EQ, EXPECT_STREQ, folly::test::TemporaryFile::fd(), folly::symbolizer::ElfFile::openNoThrow(), folly::test::TemporaryFile::path(), folly::Range< Iter >::size(), and folly::writeFull().

                                {
  folly::test::TemporaryFile tmpFile;
  const static folly::StringPiece contents = "!";
  folly::writeFull(tmpFile.fd(), contents.data(), contents.size());

  ElfFile elfFile;
  const char* msg = nullptr;
  auto res = elfFile.openNoThrow(tmpFile.path().c_str(), true, &msg);
  EXPECT_EQ(ElfFile::kInvalidElfFile, res);
  EXPECT_STREQ("not an ELF file (too short)", msg);
}

TEST_F	(	ElfTest	,
		NonElfScript
	)

Definition at line 67 of file ElfTests.cpp.

References folly::Range< Iter >::data(), EXPECT_EQ, EXPECT_STREQ, folly::test::TemporaryFile::fd(), folly::symbolizer::ElfFile::openNoThrow(), folly::test::TemporaryFile::path(), folly::Range< Iter >::size(), and folly::writeFull().

                              {
  folly::test::TemporaryFile tmpFile;
  const static folly::StringPiece contents =
      "#!/bin/sh\necho I'm small non-ELF executable\n";
  folly::writeFull(tmpFile.fd(), contents.data(), contents.size());

  ElfFile elfFile;
  const char* msg = nullptr;
  auto res = elfFile.openNoThrow(tmpFile.path().c_str(), true, &msg);
  EXPECT_EQ(ElfFile::kInvalidElfFile, res);
  EXPECT_STREQ("invalid ELF magic", msg);
}

Variable Documentation

uint64_t kIntegerValue = 1234567890UL

Definition at line 26 of file ElfTests.cpp.

Referenced by TEST_F().

const char* kStringValue = "coconuts"

Definition at line 27 of file ElfTests.cpp.

Referenced by TEST_F().