-// Copyright (c) 2011 Google, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-
-/**
- * @fileoverview Additional assertions.
- *
- * @author konigsberg@google.com (Robert Konigsberg)
- */
-
-/**
- * Asserts that two doubles (or two arrays of doubles) are equal
- * to within a positive delta.
- */
-function assertEqualsDelta(msg, expected, actual, epsilon) {
- var args = this.argsWithOptionalMsg_(arguments, 4);
- jstestdriver.assertCount++;
- msg = args[0];
- expected = args[1];
- actual = args[2];
- epsilon = args[3];
-
- if (!compareDelta_(expected, actual, epsilon)) {
- this.fail(msg + 'expected ' + epsilon + ' within ' +
- this.prettyPrintEntity_(expected) +
- ' but was ' + this.prettyPrintEntity_(actual) + '');
- }
- return true;
-};
-
-
-function compareDelta_(expected, actual, epsilon) {
- var compareDouble = function(e,a,d) {
- return Math.abs(e - a) <= d;
- }
- if (expected === actual) {
- return true;
- }
-
- if (typeof expected == "number" ||
- typeof actual == "number" ||
- !expected || !actual) {
- return compareDouble(expected, actual, epsilon);
- }
-
- if (isElement_(expected) || isElement_(actual)) {
- return false;
- }
-
- var key = null;
- var actualLength = 0;
- var expectedLength = 0;
-
- try {
- // If an array is expected the length of actual should be simple to
- // determine. If it is not it is undefined.
- if (jstestdriver.jQuery.isArray(actual)) {
- actualLength = actual.length;
- } else {
- // In case it is an object it is a little bit more complicated to
- // get the length.
- for (key in actual) {
- if (actual.hasOwnProperty(key)) {
- ++actualLength;
- }
- }
- }
-
- // Arguments object
- if (actualLength == 0 && typeof actual.length == "number") {
- actualLength = actual.length;
-
- for (var i = 0, l = actualLength; i < l; i++) {
- if (!(i in actual)) {
- actualLength = 0;
- break;
- }
- }
- }
-
- for (key in expected) {
- if (expected.hasOwnProperty(key)) {
- if (!compareDelta_(expected[key], actual[key], epsilon)) {
- return false;
- }
-
- ++expectedLength;
- }
- }
-
- if (expectedLength != actualLength) {
- return false;
- }
-
- return expectedLength == 0 ? expected.toString() == actual.toString() : true;
- } catch (e) {
- return false;
- }
-};
-