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d50bee584969
spec/util_iterators_spec.lua

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spec/util_iterators_spec.lua @ 13269:d50bee584969

mod_cron: Remove unused import [luacheck] Use of datetime was removed in 6ac5ad578565
author Kim Alvefur <zash@zash.se>
date Sun, 15 Oct 2023 16:41:25 +0200
parent 12744:e894677359e5
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1 local iter = require "util.iterators";
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2
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3 describe("util.iterators", function ()
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4 describe("join", function ()
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5 it("should produce a joined iterator", function ()
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6 local expect = { "a", "b", "c", 1, 2, 3 };
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7 local output = {};
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8 for x in iter.join(iter.values({"a", "b", "c"})):append(iter.values({1, 2, 3})) do
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9 table.insert(output, x);
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10 end
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11 assert.same(output, expect);
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12 end);
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13 it("should work with only a single iterator", function ()
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14 local expect = { "a", "b", "c" };
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15 local output = {};
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16 for x in iter.join(iter.values({"a", "b", "c"})) do
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17 table.insert(output, x);
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18 end
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19 assert.same(output, expect);
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20 end);
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21 end);
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22
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23 describe("sorted_pairs", function ()
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24 it("should produce sorted pairs", function ()
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25 local orig = { b = 1, c = 2, a = "foo", d = false };
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26 local n, last_key = 0, nil;
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27 for k, v in iter.sorted_pairs(orig) do
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28 n = n + 1;
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29 if last_key then
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30 assert(k > last_key, "Expected "..k.." > "..last_key)
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31 end
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32 assert.equal(orig[k], v);
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33 last_key = k;
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34 end
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35 assert.equal("d", last_key);
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36 assert.equal(4, n);
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37 end);
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38
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39 it("should allow a custom sort function", function ()
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40 local orig = { b = 1, c = 2, a = "foo", d = false };
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41 local n, last_key = 0, nil;
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42 for k, v in iter.sorted_pairs(orig, function (a, b) return a > b end) do
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43 n = n + 1;
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44 if last_key then
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45 assert(k < last_key, "Expected "..k.." > "..last_key)
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46 end
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47 assert.equal(orig[k], v);
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48 last_key = k;
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49 end
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50 assert.equal("a", last_key);
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51 assert.equal(4, n);
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52 end);
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53 end);
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54 end);