prosody
2f38f3275a74
spec/util_indexedbheap_spec.lua

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spec/util_indexedbheap_spec.lua @ 13616:2f38f3275a74

mod_cloud_notify: Merge from prosody-modules@fc521fb5ffa0 Many thanks to Thilo Molitor and Kim Alvefur for their work on this module while it was in the community repository. It has been stable for some time, is widely used, and provides a feature that is important to most deployments.
author Matthew Wild <mwild1@gmail.com>
date Thu, 09 Jan 2025 16:49:27 +0000
parent 11116:d334f2bebe55
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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11115
7d4c292f178e util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
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1 local ibh = require"util.indexedbheap";
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2
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3 local function verify_heap_property(priorities)
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4 for k in ipairs(priorities) do
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5 local parent = priorities[k];
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6 local childA = priorities[2*k];
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7 local childB = priorities[2*k+1];
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8 -- print("-", parent, childA, childB)
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9 assert(childA == nil or childA > parent, "heap property violated");
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10 assert(childB == nil or childB > parent, "heap property violated");
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11 end
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12 end
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13
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14 local h
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15 setup(function ()
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16 h = ibh.create();
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17 end)
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18 describe("util.indexedbheap", function ()
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19 it("item can be moved from end to top", function ()
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20 verify_heap_property(h);
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21 h:insert("a", 1);
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22 verify_heap_property(h);
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23 h:insert("b", 2);
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24 verify_heap_property(h);
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25 h:insert("c", 3);
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26 verify_heap_property(h);
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27 local id = h:insert("*", 10);
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28 verify_heap_property(h);
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29 h:reprioritize(id, 0);
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30 verify_heap_property(h);
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31 assert.same({ 0, "*", id }, { h:pop() });
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32 end)
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33 end);