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spec/util_queue_spec.lua @ 9070:21730a3642fe
Merge 0.10->trunk
author | Matthew Wild <mwild1@gmail.com> |
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date | Mon, 30 Jul 2018 15:13:54 +0100 |
parent | 8240:c803624cae3d |
child | 9901:c8b75239846c |
rev | line source |
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1 |
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2 local queue = require "util.queue"; |
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3 |
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4 describe("util.queue", function() |
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5 describe("#new()", function() |
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6 it("should work", function() |
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7 |
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8 do |
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9 local q = queue.new(10); |
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10 |
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11 assert.are.equal(q.size, 10); |
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12 assert.are.equal(q:count(), 0); |
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13 |
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14 assert.is_true(q:push("one")); |
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15 assert.is_true(q:push("two")); |
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16 assert.is_true(q:push("three")); |
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17 |
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18 for i = 4, 10 do |
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19 assert.is_true(q:push("hello")); |
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20 assert.are.equal(q:count(), i, "count is not "..i.."("..q:count()..")"); |
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21 end |
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22 assert.are.equal(q:push("hello"), nil, "queue overfull!"); |
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23 assert.are.equal(q:push("hello"), nil, "queue overfull!"); |
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24 assert.are.equal(q:pop(), "one", "queue item incorrect"); |
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25 assert.are.equal(q:pop(), "two", "queue item incorrect"); |
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26 assert.is_true(q:push("hello")); |
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27 assert.is_true(q:push("hello")); |
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28 assert.are.equal(q:pop(), "three", "queue item incorrect"); |
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29 assert.is_true(q:push("hello")); |
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30 assert.are.equal(q:push("hello"), nil, "queue overfull!"); |
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31 assert.are.equal(q:push("hello"), nil, "queue overfull!"); |
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32 |
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33 assert.are.equal(q:count(), 10, "queue count incorrect"); |
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34 |
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35 for _ = 1, 10 do |
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36 assert.are.equal(q:pop(), "hello", "queue item incorrect"); |
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37 end |
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38 |
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39 assert.are.equal(q:count(), 0, "queue count incorrect"); |
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40 assert.are.equal(q:pop(), nil, "empty queue pops non-nil result"); |
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41 assert.are.equal(q:count(), 0, "popping empty queue affects count"); |
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42 |
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43 assert.are.equal(q:peek(), nil, "empty queue peeks non-nil result"); |
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44 assert.are.equal(q:count(), 0, "peeking empty queue affects count"); |
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45 |
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46 assert.is_true(q:push(1)); |
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47 for i = 1, 1001 do |
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48 assert.are.equal(q:pop(), i); |
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49 assert.are.equal(q:count(), 0); |
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50 assert.is_true(q:push(i+1)); |
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51 assert.are.equal(q:count(), 1); |
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52 end |
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53 assert.are.equal(q:pop(), 1002); |
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54 assert.is_true(q:push(1)); |
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55 for i = 1, 1000 do |
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56 assert.are.equal(q:pop(), i); |
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57 assert.is_true(q:push(i+1)); |
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58 end |
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59 assert.are.equal(q:pop(), 1001); |
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60 assert.are.equal(q:count(), 0); |
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61 end |
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62 |
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63 do |
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64 -- Test queues that purge old items when pushing to a full queue |
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65 local q = queue.new(10, true); |
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66 |
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67 for i = 1, 10 do |
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68 q:push(i); |
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69 end |
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70 |
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71 assert.are.equal(q:count(), 10); |
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72 |
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73 assert.is_true(q:push(11)); |
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74 assert.are.equal(q:count(), 10); |
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75 assert.are.equal(q:pop(), 2); -- First item should have been purged |
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76 assert.are.equal(q:peek(), 3); |
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77 |
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78 for i = 12, 32 do |
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79 assert.is_true(q:push(i)); |
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80 end |
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81 |
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82 assert.are.equal(q:count(), 10); |
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83 assert.are.equal(q:pop(), 23); |
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84 end |
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85 |
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86 do |
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87 -- Test iterator |
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88 local q = queue.new(10, true); |
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89 |
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90 for i = 1, 10 do |
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91 q:push(i); |
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92 end |
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93 |
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94 local i = 0; |
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95 for item in q:items() do |
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96 i = i + 1; |
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97 assert.are.equal(item, i, "unexpected item returned by iterator") |
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98 end |
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99 end |
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100 |
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101 end); |
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102 end); |
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103 end); |