[7576] | 1 | <?php |
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| 2 | /** |
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| 3 | * Copyright 2011 Bas de Nooijer. All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions are met: |
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| 7 | * |
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| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
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| 9 | * this list of conditions and the following disclaimer. |
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| 10 | * |
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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| 12 | * this listof conditions and the following disclaimer in the documentation |
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| 13 | * and/or other materials provided with the distribution. |
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| 14 | * |
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| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS IS" |
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| 16 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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| 19 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 20 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 21 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 24 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 25 | * POSSIBILITY OF SUCH DAMAGE. |
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| 26 | * |
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| 27 | * The views and conclusions contained in the software and documentation are |
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| 28 | * those of the authors and should not be interpreted as representing official |
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| 29 | * policies, either expressed or implied, of the copyright holder. |
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| 30 | */ |
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| 31 | |
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| 32 | class Solarium_Plugin_Loadbalancer_WeightedRandomChoiceTest extends PHPUnit_Framework_TestCase |
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| 33 | { |
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| 34 | |
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| 35 | public function testGetRandom() |
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| 36 | { |
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| 37 | $choices = array('key1' => 1, 'key2' => 2, 'key3' => 3); |
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| 38 | |
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| 39 | $randomizer = new Solarium_Plugin_Loadbalancer_WeightedRandomChoice($choices); |
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| 40 | $choice = $randomizer->getRandom(); |
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| 41 | |
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| 42 | $this->assertTrue( |
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| 43 | array_key_exists($choice, $choices) |
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| 44 | ); |
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| 45 | |
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| 46 | $counts = array('key1' => 0, 'key2' => 0, 'key3' => 0); |
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| 47 | for ($i = 0; $i<1000; $i++) { |
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| 48 | $choice = $randomizer->getRandom(); |
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| 49 | $counts[$choice]++; |
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| 50 | } |
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| 51 | |
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| 52 | $this->assertTrue($counts['key1'] < $counts['key2']); |
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| 53 | $this->assertTrue($counts['key2'] < $counts['key3']); |
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| 54 | } |
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| 55 | |
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| 56 | public function testGetRandomWithExclude() |
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| 57 | { |
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| 58 | $choices = array('key1' => 1, 'key2' => 1, 'key3' => 300); |
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| 59 | $excludes = array('key3'); |
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| 60 | |
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| 61 | $randomizer = new Solarium_Plugin_Loadbalancer_WeightedRandomChoice($choices); |
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| 62 | |
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| 63 | $key = $randomizer->getRandom($excludes); |
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| 64 | |
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| 65 | $this->assertTrue($key !== 'key3'); |
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| 66 | } |
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| 67 | |
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| 68 | public function testAllEntriesExcluded() |
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| 69 | { |
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| 70 | $choices = array('key1' => 1, 'key2' => 2, 'key3' => 3); |
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| 71 | $excludes = array_keys($choices); |
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| 72 | |
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| 73 | $randomizer = new Solarium_Plugin_Loadbalancer_WeightedRandomChoice($choices); |
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| 74 | |
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| 75 | $this->setExpectedException('Solarium_Exception'); |
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| 76 | $randomizer->getRandom($excludes); |
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| 77 | } |
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| 78 | |
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| 79 | } |
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