prosody
c803624cae3d
spec/util_queue_spec.lua

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spec/util_queue_spec.lua @ 8240:c803624cae3d

spec/util_queue: Add iterator and peek tests for 100% line coverage
author Matthew Wild <mwild1@gmail.com>
date Sat, 16 Sep 2017 10:16:08 +0100
parent 8236:4878e4159e12
child 9901:c8b75239846c
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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);