text: //===-- DataExtractorTest.cpp -----------------------------------*- C++ -*-===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is distributed under the University of Illinois Open Source
  // License. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  
  #if defined(_MSC_VER) && (_HAS_EXCEPTIONS == 0)
  // Workaround for MSVC standard library bug, which fails to include <thread>
  // when
  // exceptions are disabled.
  #include <eh.h>
  #endif
  
  #include "gtest/gtest.h"
  
  #include "lldb/Core/DataExtractor.h"
  
  using namespace lldb_private;
  
  TEST(DataExtractorTest, GetBitfield) {
    uint8_t buffer[] = {0x01, 0x23, 0x45, 0x67};
    DataExtractor LE(buffer, sizeof(buffer), lldb::eByteOrderLittle,
                     sizeof(void *));
    DataExtractor BE(buffer, sizeof(buffer), lldb::eByteOrderBig, sizeof(void *));
  
    lldb::offset_t offset;
  
    offset = 0;
    ASSERT_EQ(buffer[1], LE.GetMaxU64Bitfield(&offset, sizeof(buffer), 8, 8));
    offset = 0;
    ASSERT_EQ(buffer[1], BE.GetMaxU64Bitfield(&offset, sizeof(buffer), 8, 8));
  
    offset = 0;
    ASSERT_EQ(int8_t(buffer[1]),
              LE.GetMaxS64Bitfield(&offset, sizeof(buffer), 8, 8));
    offset = 0;
    ASSERT_EQ(int8_t(buffer[1]),
              BE.GetMaxS64Bitfield(&offset, sizeof(buffer), 8, 8));
  }
  
  TEST(DataExtractorTest, PeekData) {
    uint8_t buffer[] = {0x01, 0x02, 0x03, 0x04};
    DataExtractor E(buffer, sizeof buffer, lldb::eByteOrderLittle, 4);
  
    EXPECT_EQ(buffer + 0, E.PeekData(0, 0));
    EXPECT_EQ(buffer + 0, E.PeekData(0, 4));
    EXPECT_EQ(nullptr, E.PeekData(0, 5));
  
    EXPECT_EQ(buffer + 2, E.PeekData(2, 0));
    EXPECT_EQ(buffer + 2, E.PeekData(2, 2));
    EXPECT_EQ(nullptr, E.PeekData(2, 3));
  
    EXPECT_EQ(buffer + 4, E.PeekData(4, 0));
    EXPECT_EQ(nullptr, E.PeekData(4, 1));
  }
  