| // Copyright 2006 The Closure Library Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| /** |
| * @fileoverview Unit tests for goog.math.paths. |
| */ |
| |
| goog.provide('goog.math.pathsTest'); |
| |
| goog.require('goog.math.Coordinate'); |
| goog.require('goog.math.paths'); |
| goog.require('goog.testing.jsunit'); |
| |
| goog.setTestOnly('goog.math.pathsTest'); |
| |
| |
| var regularNGon = goog.math.paths.createRegularNGon; |
| var arrow = goog.math.paths.createArrow; |
| |
| function testSquare() { |
| var square = regularNGon( |
| $coord(10, 10), $coord(0, 10), 4); |
| assertArrayRoughlyEquals( |
| [0, 10, 10, 0, 20, 10, 10, 20], square.arguments_, 0.05); |
| } |
| |
| function assertArrayRoughlyEquals(expected, actual, delta) { |
| var message = 'Expected: ' + expected + ', Actual: ' + actual; |
| assertEquals('Wrong length. ' + message, expected.length, actual.length); |
| for (var i = 0; i < expected.length; i++) { |
| assertRoughlyEquals( |
| 'Wrong item at ' + i + '. ' + message, |
| expected[i], actual[i], delta); |
| } |
| } |
| |
| function $coord(x, y) { |
| return new goog.math.Coordinate(x, y); |
| } |