test-utils.cc 7.15 KB
Newer Older
1
// Copyright 2011 the V8 project authors. All rights reserved.
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include <stdlib.h>

#include "v8.h"

#include "cctest.h"
33 34
#include "platform.h"
#include "utils-inl.h"
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

using namespace v8::internal;


TEST(Utils1) {
  CHECK_EQ(-1000000, FastD2I(-1000000.0));
  CHECK_EQ(-1, FastD2I(-1.0));
  CHECK_EQ(0, FastD2I(0.0));
  CHECK_EQ(1, FastD2I(1.0));
  CHECK_EQ(1000000, FastD2I(1000000.0));

  CHECK_EQ(-1000000, FastD2I(-1000000.123));
  CHECK_EQ(-1, FastD2I(-1.234));
  CHECK_EQ(0, FastD2I(0.345));
  CHECK_EQ(1, FastD2I(1.234));
  CHECK_EQ(1000000, FastD2I(1000000.123));
51 52 53 54 55 56
  // Check that >> is implemented as arithmetic shift right.
  // If this is not true, then ArithmeticShiftRight() must be changed,
  // There are also documented right shifts in assembler.cc of
  // int8_t and intptr_t signed integers.
  CHECK_EQ(-2, -8 >> 2);
  CHECK_EQ(-2, static_cast<int8_t>(-8) >> 2);
57
  CHECK_EQ(-2, static_cast<int>(static_cast<intptr_t>(-8) >> 2));
58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

  CHECK_EQ(-1000000, FastD2IChecked(-1000000.0));
  CHECK_EQ(-1, FastD2IChecked(-1.0));
  CHECK_EQ(0, FastD2IChecked(0.0));
  CHECK_EQ(1, FastD2IChecked(1.0));
  CHECK_EQ(1000000, FastD2IChecked(1000000.0));

  CHECK_EQ(-1000000, FastD2IChecked(-1000000.123));
  CHECK_EQ(-1, FastD2IChecked(-1.234));
  CHECK_EQ(0, FastD2IChecked(0.345));
  CHECK_EQ(1, FastD2IChecked(1.234));
  CHECK_EQ(1000000, FastD2IChecked(1000000.123));

  CHECK_EQ(INT_MAX, FastD2IChecked(1.0e100));
  CHECK_EQ(INT_MIN, FastD2IChecked(-1.0e100));
yangguo@chromium.org's avatar
yangguo@chromium.org committed
73
  CHECK_EQ(INT_MIN, FastD2IChecked(OS::nan_value()));
74 75 76 77 78 79 80
}


TEST(SNPrintF) {
  // Make sure that strings that are truncated because of too small
  // buffers are zero-terminated anyway.
  const char* s = "the quick lazy .... oh forget it!";
81
  int length = StrLength(s);
82 83
  for (int i = 1; i < length * 2; i++) {
    static const char kMarker = static_cast<char>(42);
84
    Vector<char> buffer = Vector<char>::New(i + 1);
85
    buffer[i] = kMarker;
86
    int n = OS::SNPrintF(Vector<char>(buffer.start(), i), "%s", s);
87 88
    CHECK(n <= i);
    CHECK(n == length || n == -1);
89
    CHECK_EQ(0, strncmp(buffer.start(), s, i - 1));
90 91
    CHECK_EQ(kMarker, buffer[i]);
    if (i <= length) {
92
      CHECK_EQ(i - 1, StrLength(buffer.start()));
93
    } else {
94
      CHECK_EQ(length, StrLength(buffer.start()));
95
    }
96
    buffer.Dispose();
97 98
  }
}
99 100 101 102 103 104 105 106 107 108


void TestMemCopy(Vector<byte> src,
                 Vector<byte> dst,
                 int source_alignment,
                 int destination_alignment,
                 int length_alignment) {
  memset(dst.start(), 0xFF, dst.length());
  byte* to = dst.start() + 32 + destination_alignment;
  byte* from = src.start() + source_alignment;
109 110
  int length = OS::kMinComplexMemCopy + length_alignment;
  OS::MemCopy(to, from, static_cast<size_t>(length));
111 112 113 114 115 116 117 118 119 120 121 122
  printf("[%d,%d,%d]\n",
         source_alignment, destination_alignment, length_alignment);
  for (int i = 0; i < length; i++) {
    CHECK_EQ(from[i], to[i]);
  }
  CHECK_EQ(0xFF, to[-1]);
  CHECK_EQ(0xFF, to[length]);
}



TEST(MemCopy) {
123
  v8::V8::Initialize();
124
  OS::SetUp();
125
  const int N = OS::kMinComplexMemCopy + 128;
126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152
  Vector<byte> buffer1 = Vector<byte>::New(N);
  Vector<byte> buffer2 = Vector<byte>::New(N);

  for (int i = 0; i < N; i++) {
    buffer1[i] = static_cast<byte>(i & 0x7F);
  }

  // Same alignment.
  for (int i = 0; i < 32; i++) {
    TestMemCopy(buffer1, buffer2, i, i, i * 2);
  }

  // Different alignment.
  for (int i = 0; i < 32; i++) {
    for (int j = 1; j < 32; j++) {
      TestMemCopy(buffer1, buffer2, i, (i + j) & 0x1F , 0);
    }
  }

  // Different lengths
  for (int i = 0; i < 32; i++) {
    TestMemCopy(buffer1, buffer2, 3, 7, i);
  }

  buffer2.Dispose();
  buffer1.Dispose();
}
153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213


TEST(Collector) {
  Collector<int> collector(8);
  const int kLoops = 5;
  const int kSequentialSize = 1000;
  const int kBlockSize = 7;
  for (int loop = 0; loop < kLoops; loop++) {
    Vector<int> block = collector.AddBlock(7, 0xbadcafe);
    for (int i = 0; i < kSequentialSize; i++) {
      collector.Add(i);
    }
    for (int i = 0; i < kBlockSize - 1; i++) {
      block[i] = i * 7;
    }
  }
  Vector<int> result = collector.ToVector();
  CHECK_EQ(kLoops * (kBlockSize + kSequentialSize), result.length());
  for (int i = 0; i < kLoops; i++) {
    int offset = i * (kSequentialSize + kBlockSize);
    for (int j = 0; j < kBlockSize - 1; j++) {
      CHECK_EQ(j * 7, result[offset + j]);
    }
    CHECK_EQ(0xbadcafe, result[offset + kBlockSize - 1]);
    for (int j = 0; j < kSequentialSize; j++) {
      CHECK_EQ(j, result[offset + kBlockSize + j]);
    }
  }
  result.Dispose();
}


TEST(SequenceCollector) {
  SequenceCollector<int> collector(8);
  const int kLoops = 5000;
  const int kMaxSequenceSize = 13;
  int total_length = 0;
  for (int loop = 0; loop < kLoops; loop++) {
    int seq_length = loop % kMaxSequenceSize;
    collector.StartSequence();
    for (int j = 0; j < seq_length; j++) {
      collector.Add(j);
    }
    Vector<int> sequence = collector.EndSequence();
    for (int j = 0; j < seq_length; j++) {
      CHECK_EQ(j, sequence[j]);
    }
    total_length += seq_length;
  }
  Vector<int> result = collector.ToVector();
  CHECK_EQ(total_length, result.length());
  int offset = 0;
  for (int loop = 0; loop < kLoops; loop++) {
    int seq_length = loop % kMaxSequenceSize;
    for (int j = 0; j < seq_length; j++) {
      CHECK_EQ(j, result[offset]);
      offset++;
    }
  }
  result.Dispose();
}
lrn@chromium.org's avatar
lrn@chromium.org committed
214 215 216 217 218 219 220 221 222 223 224 225


TEST(SequenceCollectorRegression) {
  SequenceCollector<char> collector(16);
  collector.StartSequence();
  collector.Add('0');
  collector.AddBlock(
      i::Vector<const char>("12345678901234567890123456789012", 32));
  i::Vector<char> seq = collector.EndSequence();
  CHECK_EQ(0, strncmp("0123456789012345678901234567890123",
                      seq.start(), seq.length()));
}