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86c431650dfd
spec/util_queue_spec.lua

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spec/util_queue_spec.lua @ 9659:86c431650dfd

net.websocket.frames: Prefer Lua 5.2 built-in bit module over LuaJIT version When running on Lua 5.2 this makes sense since bit32 is usually already loaded. It's sensible to prefer this going forward in case of incompatibilities between the two variants.
author Kim Alvefur <zash@zash.se>
date Thu, 29 Nov 2018 16:53:22 +0100
parent 8240:c803624cae3d
child 9901:c8b75239846c
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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);