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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