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spec/util_serialization_spec.lua

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spec/util_serialization_spec.lua @ 13130:0b650a54ff9a

doc/hgrc-email: Example config for using 'hg email' to contribute The initial setup can be tricky if you don't know what and were settings should be added. This should maybe also go into site/doc/contributing
author Kim Alvefur <zash@zash.se>
date Wed, 07 Jun 2023 16:56:53 +0200
parent 9567:dbfa286cfa88
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1 local serialization = require "util.serialization";
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2
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3 describe("util.serialization", function ()
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4 describe("serialize", function ()
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5 it("makes a string", function ()
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6 assert.is_string(serialization.serialize({}));
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7 assert.is_string(serialization.serialize(nil));
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8 assert.is_string(serialization.serialize(1));
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9 assert.is_string(serialization.serialize(true));
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10 end);
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11
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12 it("rejects function by default", function ()
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13 assert.has_error(function ()
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14 serialization.serialize(function () end)
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15 end);
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16 end);
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17
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18 it("makes a string in debug mode", function ()
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19 assert.is_string(serialization.serialize(function () end, "debug"));
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20 end);
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21
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22 it("rejects cycles", function ()
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23 assert.has_error(function ()
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24 local t = {}
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25 t[t] = { t };
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26 serialization.serialize(t)
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27 end);
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28 -- also with multirefs allowed
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29 assert.has_error(function ()
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30 local t = {}
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31 t[t] = { t };
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32 serialization.serialize(t, { multirefs = true })
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33 end);
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34 end);
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35
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36 it("rejects multiple references to same table", function ()
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37 assert.has_error(function ()
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38 local t1 = {};
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39 local t2 = { t1, t1 };
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40 serialization.serialize(t2, { multirefs = false });
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41 end);
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42 end);
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43
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44 it("optionally allows multiple references to same table", function ()
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45 assert.has_error(function ()
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46 local t1 = {};
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47 local t2 = { t1, t1 };
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48 serialization.serialize(t2, { multirefs = true });
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49 end);
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50 end);
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51
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52 it("roundtrips", function ()
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53 local function test(data)
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54 local serialized = serialization.serialize(data);
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55 assert.is_string(serialized);
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56 local deserialized, err = serialization.deserialize(serialized);
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57 assert.same(data, deserialized, err);
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58 end
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59
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60 test({});
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61 test({hello="world"});
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62 test("foobar")
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63 test("\0\1\2\3");
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64 test("nödåtgärd");
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65 test({1,2,3,4});
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66 test({foo={[100]={{"bar"},{baz=1}}}});
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67 test({["goto"] = {["function"]={["do"]="keywords"}}});
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68 end);
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69
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70 it("can serialize with metatables", function ()
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71 local s = serialization.new({ freeze = true });
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72 local t = setmetatable({ a = "hi" }, { __freeze = function (t) return { t.a } end });
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73 local rt = serialization.deserialize(s(t));
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74 assert.same({"hi"}, rt);
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75 end);
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76
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77 end);
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78 end);
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79