prosody
148075532021
spec/util_json_spec.lua

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spec/util_json_spec.lua @ 11665:148075532021

net.server_epoll: Prevent stack overflow of opportunistic writes net.http.files serving a big enough file on a fast enough connection with opportunistic_writes enabled could trigger a stack overflow through repeatedly serving more data that immediately gets sent, draining the buffer and triggering more data to be sent. This also blocked the server on a single task until completion or an error. This change prevents nested opportunistic writes, which should prevent the stack overflow, at the cost of reduced download speed, but this is unlikely to be noticeable outside of Gbit networks. Speed at the cost of blocking other processing is not worth it, especially with the risk of stack overflow.
author Kim Alvefur <zash@zash.se>
date Sun, 11 Jul 2021 09:39:21 +0200
parent 10591:d78c5c9b0cf6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1
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2 local json = require "util.json";
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3 local array = require "util.array";
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4
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5 describe("util.json", function()
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6 describe("#encode()", function()
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7 it("should work", function()
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8 local function test(f, j, e)
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9 if e then
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10 assert.are.equal(f(j), e);
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11 end
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12 assert.are.equal(f(j), f(json.decode(f(j))));
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13 end
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14 test(json.encode, json.null, "null")
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15 test(json.encode, {}, "{}")
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16 test(json.encode, {a=1});
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17 test(json.encode, {a={1,2,3}});
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18 test(json.encode, {1}, "[1]");
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19 end);
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20 end);
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21
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22 describe("#decode()", function()
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23 it("should work", function()
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24 local empty_array = json.decode("[]");
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25 assert.are.equal(type(empty_array), "table");
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26 assert.are.equal(#empty_array, 0);
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27 assert.are.equal(next(empty_array), nil);
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28 end);
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29 end);
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30
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31 describe("testcases", function()
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32
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33 local valid_data = {};
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34 local invalid_data = {};
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35
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36 local skip = "fail1.json fail9.json fail18.json fail15.json fail13.json fail25.json fail26.json fail27.json fail28.json fail17.json pass1.json";
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37
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38 setup(function()
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39 local lfs = require "lfs";
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40 local path = "spec/json";
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41 for name in lfs.dir(path) do
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42 if name:match("%.json$") then
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43 local f = assert(io.open(path.."/"..name));
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44 local content = assert(f:read("*a"));
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45 assert(f:close());
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46 if skip:find(name) then --luacheck: ignore 542
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47 -- Skip
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48 elseif name:match("^pass") then
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49 valid_data[name] = content;
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50 elseif name:match("^fail") then
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51 invalid_data[name] = content;
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52 end
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53 end
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54 end
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55 end)
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56
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57 it("should pass valid testcases", function()
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58 for name, content in pairs(valid_data) do
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59 local parsed, err = json.decode(content);
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60 assert(parsed, name..": "..tostring(err));
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61 end
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62 end);
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63
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64 it("should fail invalid testcases", function()
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65 for name, content in pairs(invalid_data) do
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66 local parsed, err = json.decode(content);
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67 assert(not parsed, name..": "..tostring(err));
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68 end
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69 end);
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70 end)
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71
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72 describe("util.array integration", function ()
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73 it("works", function ()
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74 assert.equal("[]", json.encode(array()));
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75 assert.equal("[1,2,3]", json.encode(array({1,2,3})));
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76 assert.equal(getmetatable(array()), getmetatable(json.decode("[]")));
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77 end);
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78 end);
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79
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80 end);