| /* |
| * 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. |
| */ |
| /** |
| * @assertion static void approxEquals(num expected, num actual, [num tolerance = null, String reason = null]) |
| * Descriptive error message is provided in case of failure. |
| * @description Checks that message of thrown ExpectException includes |
| * representation of the expected, actual and tolerance values, as well as the reason. |
| * @author varlax |
| * @reviewer msyabro |
| */ |
| 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; |
| |
| // min double > 0 / 10000 |
| check(0, MIN_DOUBLE); |
| check(0, MIN_DOUBLE, null, ""); |
| check(0, MIN_DOUBLE, null, "not empty"); |
| |
| check(0, NEG_MIN_DOUBLE); |
| check(0, NEG_MIN_DOUBLE, null, ""); |
| check(0, NEG_MIN_DOUBLE, null, "not empty"); |
| |
| check(MAX_DOUBLE, double.INFINITY); |
| check(double.NAN, double.NEGATIVE_INFINITY); |
| |
| check(20, 2, 1); |
| check(MIN_DOUBLE, MAX_DOUBLE, 123, "sddsd"); |
| check(0, -0.0, double.NAN, ""); |
| } |
| |
| void check(num arg1, num arg2, [num tol = null, String reason = null]) { |
| try { |
| Expect.approxEquals(arg1, arg2, tol, reason); |
| throw new Exception("ExpectException expected"); |
| } on ExpectException catch(e) { |
| if (!e.message.contains(arg1 != null ? arg1.toString() : "null", 0)) throw "no expected value"; |
| if (!e.message.contains(arg2 != null ? arg2.toString() : "null", 0)) throw "no actual value"; |
| if (reason != null && !reason.isEmpty && !e.message.contains(reason, 0)) throw "no reason"; |
| if (arg1 != null && tol == null) { |
| tol = (arg1 / Math.pow(10.0, 4.0)).abs(); |
| } |
| if (!e.message.contains(tol.toString(), 0)) throw "no tolerance"; |
| } |
| } |