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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// Ported from test262// https://github.com/tc39/test262/blob/488eb365db7c613d52e72a9f5b8726684906e540/harness/assert.js// Copyright (C) 2017 Ecma International.  All rights reserved.// This code is governed by the BSD license found in the LICENSE file./*---description: |    Collection of assertion functions used throughout test262defines: [assert]---*/

function assert(mustBeTrue, message) {  if (mustBeTrue === true) {    return;  }
  if (message === undefined) {    message = 'Expected true but got ' + assert._toString(mustBeTrue);  }  throw new Test262Error(message);}
assert._isSameValue = function (a, b) {  if (a === b) {    // Handle +/-0 vs. -/+0    return a !== 0 || 1 / a === 1 / b;  }
  // Handle NaN vs. NaN  return a !== a && b !== b;};
assert.sameValue = function (actual, expected, message) {  try {    if (assert._isSameValue(actual, expected)) {      return;    }  } catch (error) {    throw new Test262Error(message + ' (_isSameValue operation threw) ' + error);    return;  }
  if (message === undefined) {    message = '';  } else {    message += ' ';  }
  message += 'Expected SameValue(«' + assert._toString(actual) + '», «' + assert._toString(expected) + '») to be true';
  throw new Test262Error(message);};
assert.notSameValue = function (actual, unexpected, message) {  if (!assert._isSameValue(actual, unexpected)) {    return;  }
  if (message === undefined) {    message = '';  } else {    message += ' ';  }
  message += 'Expected SameValue(«' + assert._toString(actual) + '», «' + assert._toString(unexpected) + '») to be false';
  throw new Test262Error(message);};
assert.throws = function (expectedErrorConstructor, func, message) {  var expectedName, actualName;  if (typeof func !== "function") {    throw new Test262Error('assert.throws requires two arguments: the error constructor ' +      'and a function to run');    return;  }  if (message === undefined) {    message = '';  } else {    message += ' ';  }
  try {    func();  } catch (thrown) {    if (typeof thrown !== 'object' || thrown === null) {      message += 'Thrown value was not an object!';      throw new Test262Error(message);    } else if (thrown.constructor !== expectedErrorConstructor) {      expectedName = expectedErrorConstructor.name;      actualName = thrown.constructor.name;      if (expectedName === actualName) {        message += 'Expected a ' + expectedName + ' but got a different error constructor with the same name';      } else {        message += 'Expected a ' + expectedName + ' but got a ' + actualName;      }      throw new Test262Error(message);    }    return;  }
  message += 'Expected a ' + expectedErrorConstructor.name + ' to be thrown but no exception was thrown at all';  throw new Test262Error(message);};
assert._toString = function (value) {  try {    if (value === 0 && 1 / value === -Infinity) {      return '-0';    }
    return String(value);  } catch (err) {    if (err.name === 'TypeError') {      return Object.prototype.toString.call(value);    }
    throw err;  }};