prosody
008a7097fdc5
spec/util_throttle_spec.lua

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spec/util_throttle_spec.lua @ 12705:008a7097fdc5

util.jwt: Provide built-in token expiry support (defaults to 3600s lifetime) To avoid every user of the library needing to add and verify expiry info, this is now handled by util.jwt itself (if not overridden or disabled). Issuing tokens that are valid forever is bad practice and rarely desired, and the default token lifetime is now 3600s (1 hour).
author Matthew Wild <mwild1@gmail.com>
date Mon, 11 Jul 2022 13:28:29 +0100
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);