/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include <math.h>

#include "js/Conversions.h"

#include "jsapi-tests/tests.h"

using JS::ToSignedInteger;
using JS::ToUnsignedInteger;

BEGIN_TEST(testToUint8TwiceUint8Range) {
  double d = -256;
  uint8_t expected = 0;
  do {
    CHECK(ToUnsignedInteger<uint8_t>(d) == expected);

    d++;
    expected++;
  } while (d <= 256);
  return true;
}
END_TEST(testToUint8TwiceUint8Range)

BEGIN_TEST(testToInt8) {
  double d = -128;
  int8_t expected = -128;
  do {
    CHECK(ToSignedInteger<int8_t>(d) == expected);

    d++;
    expected++;
  } while (expected < 127);
  return true;
}
END_TEST(testToInt8)

BEGIN_TEST(testToUint32Large) {
  CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83)) == 0);
  CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83) + pow(2.0, 31)) == (1U << 31));
  CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83) + 2 * pow(2.0, 31)) == 0);
  CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83) + 3 * pow(2.0, 31)) ==
        (1U << 31));
  CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 84)) == 0);
  CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 84) + pow(2.0, 31)) == 0);
  CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 84) + pow(2.0, 32)) == 0);
  return true;
}
END_TEST(testToUint32Large)

BEGIN_TEST(testToUint64Large) {
  CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115)) == 0);
  CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115) + pow(2.0, 63)) ==
        (1ULL << 63));
  CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115) + 2 * pow(2.0, 63)) == 0);
  CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115) + 3 * pow(2.0, 63)) ==
        (1ULL << 63));
  CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 116)) == 0);
  CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 116) + pow(2.0, 63)) == 0);
  CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 116) + pow(2.0, 64)) == 0);
  return true;
}
END_TEST(testToUint64Large)