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// 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.
goog.provide('goog.math.RangeTest');
goog.setTestOnly('goog.math.RangeTest');
goog.require('goog.math.Range');
goog.require('goog.testing.jsunit');
/**
* Produce legible assertion results. If two ranges are not equal, the error
* message will be of the form
* "Expected <[1, 2]> (Object) but was <[3, 4]> (Object)"
*/
function assertRangesEqual(expected, actual) {
if (!goog.math.Range.equals(expected, actual)) {
assertEquals(expected, actual);
}
}
function createRange(a) {
return a ? new goog.math.Range(a[0], a[1]) : null;
}
function testFromPair() {
var range = goog.math.Range.fromPair([1, 2]);
assertEquals(1, range.start);
assertEquals(2, range.end);
range = goog.math.Range.fromPair([2, 1]);
assertEquals(1, range.start);
assertEquals(2, range.end);
}
function testRangeIntersection() {
var tests = [
[[1, 2], [3, 4], null], [[1, 3], [2, 4], [2, 3]], [[1, 4], [2, 3], [2, 3]],
[[-1, 2], [-1, 2], [-1, 2]], [[1, 2], [2, 3], [2, 2]],
[[1, 1], [1, 1], [1, 1]]
];
for (var i = 0; i < tests.length; ++i) {
var t = tests[i];
var r0 = createRange(t[0]);
var r1 = createRange(t[1]);
var expected = createRange(t[2]);
assertRangesEqual(expected, goog.math.Range.intersection(r0, r1));
assertRangesEqual(expected, goog.math.Range.intersection(r1, r0));
assertEquals(expected != null, goog.math.Range.hasIntersection(r0, r1));
assertEquals(expected != null, goog.math.Range.hasIntersection(r1, r0));
}
}
function testBoundingRange() {
var tests = [
[[1, 2], [3, 4], [1, 4]], [[1, 3], [2, 4], [1, 4]],
[[1, 4], [2, 3], [1, 4]], [[-1, 2], [-1, 2], [-1, 2]],
[[1, 2], [2, 3], [1, 3]], [[1, 1], [1, 1], [1, 1]]
];
for (var i = 0; i < tests.length; ++i) {
var t = tests[i];
var r0 = createRange(t[0]);
var r1 = createRange(t[1]);
var expected = createRange(t[2]);
assertRangesEqual(expected, goog.math.Range.boundingRange(r0, r1));
assertRangesEqual(expected, goog.math.Range.boundingRange(r1, r0));
}
}
function testRangeContains() {
var tests = [
[[0, 4], [2, 1], true], [[-4, -1], [-2, -3], true], [[1, 3], [2, 4], false],
[[-1, 0], [0, 1], false], [[0, 2], [3, 5], false]
];
for (var i = 0; i < tests.length; ++i) {
var t = tests[i];
var r0 = createRange(t[0]);
var r1 = createRange(t[1]);
var expected = t[2];
assertEquals(expected, goog.math.Range.contains(r0, r1));
}
}
function testRangeClone() {
var r = new goog.math.Range(5.6, -3.4);
assertRangesEqual(r, r.clone());
}
function testGetLength() {
assertEquals(2, new goog.math.Range(1, 3).getLength());
assertEquals(2, new goog.math.Range(3, 1).getLength());
}
function testRangeContainsPoint() {
var r = new goog.math.Range(0, 1);
assert(goog.math.Range.containsPoint(r, 0));
assert(goog.math.Range.containsPoint(r, 1));
assertFalse(goog.math.Range.containsPoint(r, -1));
assertFalse(goog.math.Range.containsPoint(r, 2));
}
function testIncludePoint() {
var r = new goog.math.Range(0, 2);
r.includePoint(0);
assertObjectEquals(new goog.math.Range(0, 2), r);
r.includePoint(1);
assertObjectEquals(new goog.math.Range(0, 2), r);
r.includePoint(2);
assertObjectEquals(new goog.math.Range(0, 2), r);
r.includePoint(-1);
assertObjectEquals(new goog.math.Range(-1, 2), r);
r.includePoint(3);
assertObjectEquals(new goog.math.Range(-1, 3), r);
}
function testIncludeRange() {
var r = new goog.math.Range(0, 4);
r.includeRange(r);
assertObjectEquals(new goog.math.Range(0, 4), r);
r.includeRange(new goog.math.Range(1, 3));
assertObjectEquals(new goog.math.Range(0, 4), r);
r.includeRange(new goog.math.Range(-1, 2));
assertObjectEquals(new goog.math.Range(-1, 4), r);
r.includeRange(new goog.math.Range(2, 5));
assertObjectEquals(new goog.math.Range(-1, 5), r);
r.includeRange(new goog.math.Range(-2, 6));
assertObjectEquals(new goog.math.Range(-2, 6), r);
}
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