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annotate spec/util_debug_spec.lua @ 12115:94de6b7596cc

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author Kim Alvefur <zash@zash.se>
date Thu, 23 Dec 2021 14:08:20 +0100
parents 37dc2a6144d1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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);