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spec/util_indexedbheap_spec.lua @ 11684:8b0baf3003fb
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author | Kim Alvefur <zash@zash.se> |
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date | Wed, 14 Jul 2021 02:53:42 +0200 |
parent | 11116:d334f2bebe55 |
rev | line source |
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11115
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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1 local ibh = require"util.indexedbheap"; |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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2 |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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3 local function verify_heap_property(priorities) |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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4 for k in ipairs(priorities) do |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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5 local parent = priorities[k]; |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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6 local childA = priorities[2*k]; |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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7 local childB = priorities[2*k+1]; |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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8 -- print("-", parent, childA, childB) |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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9 assert(childA == nil or childA > parent, "heap property violated"); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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10 assert(childB == nil or childB > parent, "heap property violated"); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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11 end |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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12 end |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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13 |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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14 local h |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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15 setup(function () |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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16 h = ibh.create(); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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17 end) |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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18 describe("util.indexedbheap", function () |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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19 it("item can be moved from end to top", function () |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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20 verify_heap_property(h); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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21 h:insert("a", 1); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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22 verify_heap_property(h); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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23 h:insert("b", 2); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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24 verify_heap_property(h); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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25 h:insert("c", 3); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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26 verify_heap_property(h); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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27 local id = h:insert("*", 10); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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28 verify_heap_property(h); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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29 h:reprioritize(id, 0); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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30 verify_heap_property(h); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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31 assert.same({ 0, "*", id }, { h:pop() }); |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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32 end) |
7d4c292f178e
util.indexedbheap: Fix heap datastructure corruption in :reschedule(smaller_value)
Waqas Hussain <waqas20@gmail.com>
parents:
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33 end); |