| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // @dart = 2.9 |
| |
| /// @assertion static void approxEquals(num expected, num actual, [num tolerance = null, String reason = null]) |
| /// Failure if the difference between expected and actual is greater than the given tolerance. |
| /// @description Checks that no exception is thrown when the absolute difference between arguments |
| /// is strictly less than specified non-negative, non-NAN tolerance, regardless of reason (the last argument). |
| /// @author rodionov |
| /// @author varlax |
| /// @reviewer varlax |
| |
| import "../../../Utils/expect.dart"; |
| |
| import "dart:math" as Math; |
| |
| main() { |
| final double MIN_DOUBLE = Math.pow(2.0, -1074); |
| final double NEG_MIN_DOUBLE = -1 * MIN_DOUBLE; |
| final double MAX_DOUBLE = (2 - Math.pow(2.0, -52)) * Math.pow(2.0, 1023); |
| final double NEG_MAX_DOUBLE = -1 * MAX_DOUBLE; |
| |
| Expect.approxEquals(100.0, 101, 1.1); |
| Expect.approxEquals(101, 102.1, 2, ""); |
| Expect.approxEquals(101.0, 100, 1.0000001, "not empty"); |
| |
| Expect.approxEquals(-101, -100.0, 1.111); |
| Expect.approxEquals(-1, 1.0, 3, ""); |
| |
| Expect.approxEquals(-0.0, 0, 0.111); |
| |
| Expect.approxEquals(MAX_DOUBLE, MIN_DOUBLE, MAX_DOUBLE, "not empty"); |
| Expect.approxEquals(NEG_MAX_DOUBLE, NEG_MIN_DOUBLE, MAX_DOUBLE, "not empty"); |
| |
| Expect.approxEquals(MAX_DOUBLE, NEG_MAX_DOUBLE, double.infinity); |
| Expect.approxEquals(MIN_DOUBLE, NEG_MIN_DOUBLE, 0.0000000001, ""); |
| } |