prosody
c673ff1075bd
spec/util_debug_spec.lua

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spec/util_debug_spec.lua @ 13461:c673ff1075bd

mod_posix: Move everything to util.startup This allows greater control over the order of events. Notably, the internal ordering between daemonization, initialization of libunbound and setup of signal handling is sensitive. libunbound starts a separate thread for processing DNS requests. If this thread is started before signal handling has been set up, it will not inherit the signal handlers and instead behave as it would have before signal handlers were set up, i.e. cause the whole process to immediately exit. libunbound is usually initialized on the first DNS request, usually triggered by an outgoing s2s connection attempt. If daemonization happens before signals have been set up, signals may not be processed at all.
author Kim Alvefur <zash@zash.se>
date Sat, 23 Mar 2024 20:48:19 +0100
parent 11177:37dc2a6144d1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11177
37dc2a6144d1 util.debug: Fix locals being reported under wrong stack frame in some cases (+tests!!)
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1 local dbg = require "util.debug";
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2
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3 describe("util.debug", function ()
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4 describe("traceback()", function ()
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5 it("works", function ()
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6 local tb = dbg.traceback();
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7 assert.is_string(tb);
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8 end);
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9 end);
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10 describe("get_traceback_table()", function ()
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11 it("works", function ()
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12 local count = 0;
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13 -- MUST stay in sync with the line numbers of these functions:
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14 local f1_defined, f3_defined = 43, 15;
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15 local function f3(f3_param) --luacheck: ignore 212/f3_param
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16 count = count + 1;
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17
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18 for i = 1, 2 do
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19 local tb = dbg.get_traceback_table(i == 1 and coroutine.running() or nil, 0);
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20 assert.is_table(tb);
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21 --print(dbg.traceback(), "\n\n\n", require "util.serialization".serialize(tb, { fatal = false, unquoted = true}));
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22 local found_f1, found_f3;
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23 for _, frame in ipairs(tb) do
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24 if frame.info.linedefined == f1_defined then
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25 assert.equal(0, #frame.locals);
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26 assert.equal("f2", frame.upvalues[1].name);
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27 assert.equal("f1_upvalue", frame.upvalues[2].name);
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28 found_f1 = true;
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29 elseif frame.info.linedefined == f3_defined then
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30 assert.equal("f3_param", frame.locals[1].name);
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31 found_f3 = true;
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32 end
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33 end
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34 assert.is_true(found_f1);
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35 assert.is_true(found_f3);
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36 end
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37 end
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38 local function f2()
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39 local f2_local = "hello";
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40 return f3(f2_local);
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41 end
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42 local f1_upvalue = "upvalue1";
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43 local function f1()
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44 f2(f1_upvalue);
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45 end
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46
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47 -- ok/err are caught and re-thrown so that
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48 -- busted gets to handle them in its own way
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49 local ok, err;
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50 local function hook()
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51 debug.sethook();
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52 ok, err = pcall(f1);
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53 end
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54
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55 -- Test the traceback is correct in various
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56 -- types of caller environments
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57
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58 -- From a Lua hook
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59 debug.sethook(hook, "crl", 1);
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60 local a = string.sub("abcdef", 3, 4);
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61 assert.equal("cd", a);
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62 debug.sethook();
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63 assert.equal(1, count);
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64
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65 if not ok then
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66 error(err);
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67 end
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68 ok, err = nil, nil;
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69
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70 -- From a signal handler (C hook)
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71 require "util.signal".signal("SIGUSR1", hook);
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72 require "util.signal".raise("SIGUSR1");
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73 assert.equal(2, count);
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74
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75 if not ok then
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76 error(err);
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77 end
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78 ok, err = nil, nil;
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79
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80 -- Inside a coroutine
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81 local co = coroutine.create(function ()
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82 hook();
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83 end);
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84 coroutine.resume(co);
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85
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86 if not ok then
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87 error(err);
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88 end
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89
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90 assert.equal(3, count);
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91 end);
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92 end);
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93 end);