minidump_file_writer_unittest.cc

// Copyright (c) 2006, Google Inc.
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// Author: waylonis@google.com (Dan Waylonis)

/*
 g++ -I../ ../common/convert_UTF.c \
 ../common/string_conversion.cc \
 minidump_file_writer.cc \
 minidump_file_writer_unittest.cc \
 -o minidump_file_writer_unittest
 */

#include <fcntl.h>
#include <unistd.h>

#include "minidump_file_writer-inl.h"

using google_breakpad::MinidumpFileWriter;

#define ASSERT_TRUE(cond) \
if (!(cond)) { \
  fprintf(stderr, "FAILED: %s at %s:%d\n", #cond, __FILE__, __LINE__); \
    return false; \
}

#define ASSERT_EQ(e1, e2) ASSERT_TRUE((e1) == (e2))
#define ASSERT_NE(e1, e2) ASSERT_TRUE((e1) != (e2))

struct StringStructure {
  unsigned long integer_value;
  MDLocationDescriptor first_string;
  MDLocationDescriptor second_string;
};

struct ArrayStructure {
  unsigned char char_value;
  unsigned short short_value;
  unsigned long long_value;
};

typedef struct {
  unsigned long count;
  ArrayStructure array[0];
} ObjectAndArrayStructure;

static bool WriteFile(const char *path) {
  MinidumpFileWriter writer;
  if (writer.Open(path)) {
    // Test a single structure
    google_breakpad::TypedMDRVA<StringStructure> strings(&writer);
    ASSERT_TRUE(strings.Allocate());
    strings.get()->integer_value = 0xBEEF;
    const char *first = "First String";
    ASSERT_TRUE(writer.WriteString(first, 0, &strings.get()->first_string));
    const wchar_t *second = L"Second String";
    ASSERT_TRUE(writer.WriteString(second, 0, &strings.get()->second_string));

    // Test an array structure
    google_breakpad::TypedMDRVA<ArrayStructure> array(&writer);
    unsigned int count = 10;
    ASSERT_TRUE(array.AllocateArray(count));
    for (unsigned char i = 0; i < count; ++i) {
      ArrayStructure local;
      local.char_value = i;
      local.short_value = i + 1;
      local.long_value = i + 2;
      ASSERT_TRUE(array.CopyIndex(i, &local));
    }

    // Test an object followed by an array
    google_breakpad::TypedMDRVA<ObjectAndArrayStructure> obj_array(&writer);
    ASSERT_TRUE(obj_array.AllocateObjectAndArray(count,
                                                 sizeof(ArrayStructure)));
    obj_array.get()->count = count;
    for (unsigned char i = 0; i < count; ++i) {
      ArrayStructure local;
      local.char_value = i;
      local.short_value = i + 1;
      local.long_value = i + 2;
      ASSERT_TRUE(obj_array.CopyIndexAfterObject(i, &local, sizeof(local)));
    }
  }

  return writer.Close();
}

static bool CompareFile(const char *path) {
  unsigned long expected[] = {
#if defined(__BIG_ENDIAN__)
    0x0000beef, 0x0000001e, 0x00000018, 0x00000020, 0x00000038, 0x00000000, 
    0x00000018, 0x00460069, 0x00720073, 0x00740020, 0x00530074, 0x00720069,
    0x006e0067, 0x00000000, 0x0000001a, 0x00530065, 0x0063006f, 0x006e0064,
    0x00200053, 0x00740072, 0x0069006e, 0x00670000, 0x00000001, 0x00000002,
    0x01000002, 0x00000003, 0x02000003, 0x00000004, 0x03000004, 0x00000005,
    0x04000005, 0x00000006, 0x05000006, 0x00000007, 0x06000007, 0x00000008,
    0x07000008, 0x00000009, 0x08000009, 0x0000000a, 0x0900000a, 0x0000000b,
    0x0000000a, 0x00000001, 0x00000002, 0x01000002, 0x00000003, 0x02000003,
    0x00000004, 0x03000004, 0x00000005, 0x04000005, 0x00000006, 0x05000006,
    0x00000007, 0x06000007, 0x00000008, 0x07000008, 0x00000009, 0x08000009,
    0x0000000a, 0x0900000a, 0x0000000b, 0x00000000
#else
    0x0000beef, 0x0000001e, 0x00000018, 0x00000020,
    0x00000038, 0x00000000, 0x00000018, 0x00690046,
    0x00730072, 0x00200074, 0x00740053, 0x00690072,
    0x0067006e, 0x00000000, 0x0000001a, 0x00650053,
    0x006f0063, 0x0064006e, 0x00530020, 0x00720074,
    0x006e0069, 0x00000067, 0x00011e00, 0x00000002,
    0x00021e01, 0x00000003, 0x00031e02, 0x00000004,
    0x00041e03, 0x00000005, 0x00051e04, 0x00000006,
    0x00061e05, 0x00000007, 0x00071e06, 0x00000008,
    0x00081e07, 0x00000009, 0x00091e08, 0x0000000a,
    0x000a1e09, 0x0000000b, 0x0000000a, 0x00011c00,
    0x00000002, 0x00021c01, 0x00000003, 0x00031c02,
    0x00000004, 0x00041c03, 0x00000005, 0x00051c04,
    0x00000006, 0x00061c05, 0x00000007, 0x00071c06,
    0x00000008, 0x00081c07, 0x00000009, 0x00091c08,
    0x0000000a, 0x000a1c09, 0x0000000b, 0x00000000,
#endif
  };
  size_t expected_byte_count = sizeof(expected);
  int fd = open(path, O_RDONLY, 0600);
  void *buffer = malloc(expected_byte_count);
  ASSERT_NE(fd, -1);
  ASSERT_TRUE(buffer);
  ASSERT_EQ(read(fd, buffer, expected_byte_count), 
            static_cast<ssize_t>(expected_byte_count));

  char *b1, *b2;
  b1 = reinterpret_cast<char*>(buffer);
  b2 = reinterpret_cast<char*>(expected);
  while (*b1 == *b2) {
    b1++;
    b2++;
  }

  printf("%p\n", reinterpret_cast<void*>(b1 - (char*)buffer));

  ASSERT_EQ(memcmp(buffer, expected, expected_byte_count), 0);
  return true;
}

static bool RunTests() {
  const char *path = "/tmp/minidump_file_writer_unittest.dmp";
  ASSERT_TRUE(WriteFile(path));
  ASSERT_TRUE(CompareFile(path));
  unlink(path);
  return true;
}

extern "C" int main(int argc, const char *argv[]) {
  return RunTests() ? 0 : 1;
}