prosody
d580e6a57cbb
spec/util_throttle_spec.lua

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spec/util_throttle_spec.lua @ 12592:d580e6a57cbb 0.12

mod_storage_sql: Fix bypass of load procedure under prosodyctl There's no 'prosody.prosodyctl' property other than this one, introduced in 6216743c188c in 2015. Guessing that the intent was to skip this when running as a prosodyctl command. The module.command code does its own version of this initialization, so this seems likely. Thanks raja for noticing
author Kim Alvefur <zash@zash.se>
date Tue, 26 Jul 2022 00:39:16 +0200
parent 9993:02a41315d275
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1
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3 -- Mock util.time
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4 local now = 0; -- wibbly-wobbly... timey-wimey... stuff
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5 local function later(n)
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6 now = now + n; -- time passes at a different rate
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7 end
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8 package.loaded["util.time"] = {
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9 now = function() return now; end
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10 }
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13 local throttle = require "util.throttle";
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14
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15 describe("util.throttle", function()
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16 describe("#create()", function()
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17 it("should be created with correct values", function()
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18 now = 5;
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19 local a = throttle.create(3, 10);
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20 assert.same(a, { balance = 3, max = 3, rate = 0.3, t = 5 });
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22 local a = throttle.create(3, 5);
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23 assert.same(a, { balance = 3, max = 3, rate = 0.6, t = 5 });
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25 local a = throttle.create(1, 1);
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26 assert.same(a, { balance = 1, max = 1, rate = 1, t = 5 });
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28 local a = throttle.create(10, 10);
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29 assert.same(a, { balance = 10, max = 10, rate = 1, t = 5 });
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31 local a = throttle.create(10, 1);
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32 assert.same(a, { balance = 10, max = 10, rate = 10, t = 5 });
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33 end);
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34 end);
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35
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36 describe("#update()", function()
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37 it("does nothing when no time has passed, even if balance is not full", function()
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38 now = 5;
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39 local a = throttle.create(10, 10);
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40 for i=1,5 do
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41 a:update();
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42 assert.same(a, { balance = 10, max = 10, rate = 1, t = 5 });
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43 end
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44 a.balance = 0;
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45 for i=1,5 do
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46 a:update();
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47 assert.same(a, { balance = 0, max = 10, rate = 1, t = 5 });
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48 end
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49 end);
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50 it("updates only time when time passes but balance is full", function()
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51 now = 5;
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52 local a = throttle.create(10, 10);
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53 for i=1,5 do
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54 later(5);
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55 a:update();
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56 assert.same(a, { balance = 10, max = 10, rate = 1, t = 5 + i*5 });
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57 end
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58 end);
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59 it("updates balance when balance has room to grow as time passes", function()
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60 now = 5;
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61 local a = throttle.create(10, 10);
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62 a.balance = 0;
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63 assert.same(a, { balance = 0, max = 10, rate = 1, t = 5 });
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64
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65 later(1);
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66 a:update();
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67 assert.same(a, { balance = 1, max = 10, rate = 1, t = 6 });
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68
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69 later(3);
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70 a:update();
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71 assert.same(a, { balance = 4, max = 10, rate = 1, t = 9 });
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72
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73 later(10);
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74 a:update();
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75 assert.same(a, { balance = 10, max = 10, rate = 1, t = 19 });
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76 end);
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77 it("handles 10 x 0.1s updates the same as 1 x 1s update ", function()
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78 now = 5;
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79 local a = throttle.create(1, 1);
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80
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81 a.balance = 0;
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82 later(1);
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83 a:update();
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84 assert.same(a, { balance = 1, max = 1, rate = 1, t = now });
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85
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86 a.balance = 0;
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87 for i=1,10 do
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88 later(0.1);
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89 a:update();
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90 end
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91 assert(math.abs(a.balance - 1) < 0.0001); -- incremental updates cause rounding errors
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92 end);
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93 end);
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94
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95 -- describe("po")
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96
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97 describe("#poll()", function()
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98 it("should only allow successful polls until cost is hit", function()
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99 now = 5;
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100
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101 local a = throttle.create(3, 10);
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102 assert.same(a, { balance = 3, max = 3, rate = 0.3, t = 5 });
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103
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104 assert.is_true(a:poll(1)); -- 3 -> 2
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105 assert.same(a, { balance = 2, max = 3, rate = 0.3, t = 5 });
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106
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107 assert.is_true(a:poll(2)); -- 2 -> 1
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108 assert.same(a, { balance = 0, max = 3, rate = 0.3, t = 5 });
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109
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110 assert.is_false(a:poll(1)); -- MEEP, out of credits!
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111 assert.is_false(a:poll(1)); -- MEEP, out of credits!
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112 assert.same(a, { balance = 0, max = 3, rate = 0.3, t = 5 });
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113 end);
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114
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115 it("should not allow polls more than the cost", function()
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116 now = 0;
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117
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118 local a = throttle.create(10, 10);
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119 assert.same(a, { balance = 10, max = 10, rate = 1, t = 0 });
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120
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121 assert.is_false(a:poll(11));
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122 assert.same(a, { balance = 10, max = 10, rate = 1, t = 0 });
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123
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124 assert.is_true(a:poll(6));
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125 assert.same(a, { balance = 4, max = 10, rate = 1, t = 0 });
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126
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127 assert.is_false(a:poll(5));
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128 assert.same(a, { balance = 4, max = 10, rate = 1, t = 0 });
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129
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130 -- fractional
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131 assert.is_true(a:poll(3.5));
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132 assert.same(a, { balance = 0.5, max = 10, rate = 1, t = 0 });
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133
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134 assert.is_true(a:poll(0.25));
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135 assert.same(a, { balance = 0.25, max = 10, rate = 1, t = 0 });
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136
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137 assert.is_false(a:poll(0.3));
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138 assert.same(a, { balance = 0.25, max = 10, rate = 1, t = 0 });
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139
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140 assert.is_true(a:poll(0.25));
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141 assert.same(a, { balance = 0, max = 10, rate = 1, t = 0 });
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142
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143 assert.is_false(a:poll(0.1));
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144 assert.same(a, { balance = 0, max = 10, rate = 1, t = 0 });
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145
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146 assert.is_true(a:poll(0));
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147 assert.same(a, { balance = 0, max = 10, rate = 1, t = 0 });
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148 end);
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149 end);
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150 end);