Mercurial > prosody-hg
annotate spec/util_async_spec.lua @ 8615:e77b37de482e
util.async: Behaviour change: continue to process queued items after errors
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Sat, 17 Mar 2018 14:54:48 +0000 |
| parents | bfbafeced0c4 |
| children | a15c891c6232 |
| rev | line source |
|---|---|
| 8605 | 1 local async = require "util.async"; |
| 2 | |
| 3 describe("util.async", function() | |
| 4 local debug = false; | |
| 5 local print = print; | |
| 6 if debug then | |
| 7 require "util.logger".add_simple_sink(print); | |
| 8 else | |
| 9 print = function () end | |
| 10 end | |
| 11 local function new(func, name) | |
| 12 local log = {}; | |
| 13 return async.runner(func, setmetatable({}, { | |
| 14 __index = function (_, event) | |
| 15 return function (runner, err) | |
| 16 print(name, "event", event, err) | |
| 17 print "--" | |
| 18 table.insert(log, { event = event, err = err }); | |
| 19 end; | |
| 20 end; | |
| 21 })), log; | |
| 22 end | |
| 23 describe("#runner", function() | |
| 24 it("should work", function() | |
| 25 local r, l = new(function (item) assert(type(item) == "number") end); | |
| 26 r:run(1); | |
| 27 r:run(2); | |
| 28 end); | |
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29 |
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30 it("should be ready after creation", function () |
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31 local r = async.runner(function (item) end); |
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32 assert.equal(r.state, "ready"); |
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33 end); |
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34 |
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35 it("should do nothing if the queue is empty", function () |
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36 local did_run; |
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37 local r = async.runner(function (item) did_run = true end); |
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38 r:run(); |
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39 assert.equal(r.state, "ready"); |
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40 assert.is_nil(did_run); |
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41 r:run("hello"); |
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42 assert.is_true(did_run); |
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43 end); |
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44 |
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45 it("should support queuing work items without running", function () |
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46 local did_run; |
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47 local r = async.runner(function (item) did_run = true end); |
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48 r:enqueue("hello"); |
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49 assert.equal(r.state, "ready"); |
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50 assert.is_nil(did_run); |
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51 r:run(); |
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52 assert.is_true(did_run); |
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53 end); |
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54 |
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55 it("should support queuing multiple work items", function () |
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56 local last_item; |
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57 local s = spy(function (item) last_item = item; end); |
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58 local r = async.runner(s); |
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59 r:enqueue("hello"); |
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60 r:enqueue("there"); |
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61 r:enqueue("world"); |
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62 assert.equal(r.state, "ready"); |
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63 r:run(); |
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64 assert.equal(r.state, "ready"); |
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65 assert.spy(s).was.called(3); |
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66 assert.equal(last_item, "world"); |
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67 end); |
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68 |
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69 it("should support all simple data types", function () |
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70 local last_item; |
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71 local s = spy(function (item) last_item = item; end); |
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72 local r = async.runner(s); |
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73 local values = { {}, 123, "hello", true, false }; |
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74 for i = 1, #values do |
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75 r:enqueue(values[i]); |
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76 end |
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77 assert.equal(r.state, "ready"); |
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78 r:run(); |
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79 assert.equal(r.state, "ready"); |
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80 assert.spy(s).was.called(#values); |
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81 for i = 1, #values do |
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82 assert.spy(s).was.called_with(values[i]); |
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83 end |
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84 assert.equal(last_item, values[#values]); |
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85 end); |
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86 |
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87 describe("#errors", function () |
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88 local last_processed_item, last_error; |
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89 local r; |
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90 local wait, done; |
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91 r = async.runner(function (item) |
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92 if item == "error" then |
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93 error({ e = "test error" }); |
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94 elseif item == "wait" then |
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95 wait, done = async.waiter(); |
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96 wait(); |
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97 error({ e = "post wait error" }); |
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98 end |
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99 last_processed_item = item; |
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100 end, { |
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101 error = function (runner, err) |
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102 assert.equal(r, runner); |
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103 last_error = err; |
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104 end; |
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105 }); |
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106 |
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107 randomize(false); |
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108 |
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109 it("should notify", function () |
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110 local last_processed_item, last_error; |
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111 local r; |
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112 r = async.runner(function (item) |
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113 if item == "error" then |
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114 error({ e = "test error" }); |
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115 end |
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116 last_processed_item = item; |
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117 end, { |
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118 error = function (runner, err) |
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119 assert.equal(r, runner); |
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120 last_error = err; |
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121 end; |
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122 }); |
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123 |
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124 r:run("hello"); |
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125 assert.equal(r.state, "ready"); |
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126 assert.equal(last_processed_item, "hello"); |
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127 |
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128 assert.equal(last_error, nil); |
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129 r:run("error"); |
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130 assert.is_table(last_error); |
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131 assert.equal(last_error.e, "test error"); |
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132 last_error = nil; |
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133 assert.equal(r.state, "ready"); |
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134 assert.equal(last_processed_item, "hello"); |
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135 end); |
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136 it("should not be fatal to the runner", function () |
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137 r:run("world"); |
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138 assert.equal(r.state, "ready"); |
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139 assert.equal(last_processed_item, "world"); |
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140 end); |
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141 it("should work despite a #waiter", function () |
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142 -- This test covers an important case where a runner |
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143 -- throws an error while being executed outside of the |
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144 -- main loop. This happens when it was blocked ('waiting'), |
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145 -- and then released (via a call to done()). |
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146 last_error = nil; |
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147 r:run("wait"); |
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148 assert.equal(r.state, "waiting"); |
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149 done(); |
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150 -- At this point an error happens (state goes error->ready) |
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151 assert.equal(r.state, "ready"); |
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152 assert.is_table(last_error); |
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153 assert.equal(last_error.e, "post wait error"); |
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154 last_error = nil; |
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155 r:run("hello again"); |
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156 assert.equal(r.state, "ready"); |
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157 assert.equal(last_processed_item, "hello again"); |
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158 end); |
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159 |
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160 it("should continue to process work items", function () |
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161 local wait, done, last_item; |
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162 local runner_func = spy.new(function (item) |
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163 if item == "error" then |
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164 error("test error"); |
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165 elseif item == "wait-error" then |
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166 wait, done = async.waiter(); |
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167 wait(); |
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168 error("test error"); |
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169 end |
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170 last_item = item; |
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171 end); |
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172 local runner = async.runner(runner_func, { error = spy.new(function () end) }); |
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173 runner:enqueue("one"); |
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174 runner:enqueue("error"); |
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175 runner:enqueue("two"); |
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176 runner:run(); |
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177 assert.equal(r.state, "ready"); |
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178 assert.equal(r.state, r.notified_state); |
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179 assert.spy(runner_func).was.called(3); |
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180 assert.spy(runner.watchers.error).was.called(1); |
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181 assert.equal(last_item, "two"); |
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182 end); |
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183 end); |
| 8605 | 184 end); |
| 185 describe("#waiter", function() | |
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186 it("should error outside of async context", function () |
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187 assert.has_error(function () |
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188 async.waiter(); |
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189 end); |
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190 end); |
| 8605 | 191 it("should work", function () |
| 192 local wait, done; | |
| 193 | |
| 194 local r, l = new(function (item) | |
| 195 assert(type(item) == "number") | |
| 196 if item == 3 then | |
| 197 wait, done = async.waiter(); | |
| 198 wait(); | |
| 199 end | |
| 200 end); | |
| 201 | |
| 202 r:run(1); | |
| 203 assert(r.state == "ready"); | |
| 204 r:run(2); | |
| 205 assert(r.state == "ready"); | |
| 206 r:run(3); | |
| 207 assert(r.state == "waiting"); | |
| 208 done(); | |
| 209 assert(r.state == "ready"); | |
| 210 --for k, v in ipairs(l) do print(k,v) end | |
| 211 end); | |
| 212 | |
| 213 it("should work", function () | |
| 214 -------------------- | |
| 215 local wait, done; | |
| 216 local last_item = 0; | |
| 217 local r, l = new(function (item) | |
| 218 assert(type(item) == "number") | |
| 219 assert(item == last_item + 1); | |
| 220 last_item = item; | |
| 221 if item == 3 then | |
| 222 wait, done = async.waiter(); | |
| 223 wait(); | |
| 224 end | |
| 225 end); | |
| 226 | |
| 227 r:run(1); | |
| 228 assert(r.state == "ready"); | |
| 229 r:run(2); | |
| 230 assert(r.state == "ready"); | |
| 231 r:run(3); | |
| 232 assert(r.state == "waiting"); | |
| 233 r:run(4); | |
| 234 assert(r.state == "waiting"); | |
| 235 done(); | |
| 236 assert(r.state == "ready"); | |
| 237 --for k, v in ipairs(l) do print(k,v) end | |
| 238 end); | |
| 239 it("should work", function () | |
| 240 -------------------- | |
| 241 local wait, done; | |
| 242 local last_item = 0; | |
| 243 local r, l = new(function (item) | |
| 244 assert(type(item) == "number") | |
| 245 assert((item == last_item + 1) or item == 3); | |
| 246 last_item = item; | |
| 247 if item == 3 then | |
| 248 wait, done = async.waiter(); | |
| 249 wait(); | |
| 250 end | |
| 251 end); | |
| 252 | |
| 253 r:run(1); | |
| 254 assert(r.state == "ready"); | |
| 255 r:run(2); | |
| 256 assert(r.state == "ready"); | |
| 257 | |
| 258 local dones = {}; | |
| 259 r:run(3); | |
| 260 assert(r.state == "waiting"); | |
| 261 r:run(3); | |
| 262 assert(r.state == "waiting"); | |
| 263 r:run(3); | |
| 264 assert(r.state == "waiting"); | |
| 265 r:run(4); | |
| 266 assert(r.state == "waiting"); | |
| 267 | |
| 268 for i = 1, 3 do | |
| 269 done(); | |
| 270 if i < 3 then | |
| 271 assert(r.state == "waiting"); | |
| 272 end | |
| 273 end | |
| 274 | |
| 275 assert(r.state == "ready"); | |
| 276 --for k, v in ipairs(l) do print(k,v) end | |
| 277 end); | |
| 278 it("should work", function () | |
| 279 -------------------- | |
| 280 local wait, done; | |
| 281 local last_item = 0; | |
| 282 local r, l = new(function (item) | |
| 283 assert(type(item) == "number") | |
| 284 assert((item == last_item + 1) or item == 3); | |
| 285 last_item = item; | |
| 286 if item == 3 then | |
| 287 wait, done = async.waiter(); | |
| 288 wait(); | |
| 289 end | |
| 290 end); | |
| 291 | |
| 292 r:run(1); | |
| 293 assert(r.state == "ready"); | |
| 294 r:run(2); | |
| 295 assert(r.state == "ready"); | |
| 296 | |
| 297 local dones = {}; | |
| 298 r:run(3); | |
| 299 assert(r.state == "waiting"); | |
| 300 r:run(3); | |
| 301 assert(r.state == "waiting"); | |
| 302 | |
| 303 for i = 1, 2 do | |
| 304 done(); | |
| 305 if i < 2 then | |
| 306 assert(r.state == "waiting"); | |
| 307 end | |
| 308 end | |
| 309 | |
| 310 assert(r.state == "ready"); | |
| 311 r:run(4); | |
| 312 assert(r.state == "ready"); | |
| 313 | |
| 314 assert(r.state == "ready"); | |
| 315 --for k, v in ipairs(l) do print(k,v) end | |
| 316 end); | |
| 317 it("should work with multiple runners in parallel", function () | |
| 318 -- Now with multiple runners | |
| 319 -------------------- | |
| 320 local wait1, done1; | |
| 321 local last_item1 = 0; | |
| 322 local r1, l1 = new(function (item) | |
| 323 assert(type(item) == "number") | |
| 324 assert((item == last_item1 + 1) or item == 3); | |
| 325 last_item1 = item; | |
| 326 if item == 3 then | |
| 327 wait1, done1 = async.waiter(); | |
| 328 wait1(); | |
| 329 end | |
| 330 end, "r1"); | |
| 331 | |
| 332 local wait2, done2; | |
| 333 local last_item2 = 0; | |
| 334 local r2, l2 = new(function (item) | |
| 335 assert(type(item) == "number") | |
| 336 assert((item == last_item2 + 1) or item == 3); | |
| 337 last_item2 = item; | |
| 338 if item == 3 then | |
| 339 wait2, done2 = async.waiter(); | |
| 340 wait2(); | |
| 341 end | |
| 342 end, "r2"); | |
| 343 | |
| 344 r1:run(1); | |
| 345 assert(r1.state == "ready"); | |
| 346 r1:run(2); | |
| 347 assert(r1.state == "ready"); | |
| 348 | |
| 349 local dones = {}; | |
| 350 r1:run(3); | |
| 351 assert(r1.state == "waiting"); | |
| 352 r1:run(3); | |
| 353 assert(r1.state == "waiting"); | |
| 354 | |
| 355 r2:run(1); | |
| 356 assert(r1.state == "waiting"); | |
| 357 assert(r2.state == "ready"); | |
| 358 | |
| 359 r2:run(2); | |
| 360 assert(r1.state == "waiting"); | |
| 361 assert(r2.state == "ready"); | |
| 362 | |
| 363 r2:run(3); | |
| 364 assert(r1.state == "waiting"); | |
| 365 assert(r2.state == "waiting"); | |
| 366 done2(); | |
| 367 | |
| 368 r2:run(3); | |
| 369 assert(r1.state == "waiting"); | |
| 370 assert(r2.state == "waiting"); | |
| 371 done2(); | |
| 372 | |
| 373 r2:run(4); | |
| 374 assert(r1.state == "waiting"); | |
| 375 assert(r2.state == "ready"); | |
| 376 | |
| 377 for i = 1, 2 do | |
| 378 done1(); | |
| 379 if i < 2 then | |
| 380 assert(r1.state == "waiting"); | |
| 381 end | |
| 382 end | |
| 383 | |
| 384 assert(r1.state == "ready"); | |
| 385 r1:run(4); | |
| 386 assert(r1.state == "ready"); | |
| 387 | |
| 388 assert(r1.state == "ready"); | |
| 389 --for k, v in ipairs(l1) do print(k,v) end | |
| 390 end); | |
| 391 it("should work work with multiple runners in parallel", function () | |
| 392 -------------------- | |
| 393 local wait1, done1; | |
| 394 local last_item1 = 0; | |
| 395 local r1, l1 = new(function (item) | |
| 396 print("r1 processing ", item); | |
| 397 assert(type(item) == "number") | |
| 398 assert((item == last_item1 + 1) or item == 3); | |
| 399 last_item1 = item; | |
| 400 if item == 3 then | |
| 401 wait1, done1 = async.waiter(); | |
| 402 wait1(); | |
| 403 end | |
| 404 end, "r1"); | |
| 405 | |
| 406 local wait2, done2; | |
| 407 local last_item2 = 0; | |
| 408 local r2, l2 = new(function (item) | |
| 409 print("r2 processing ", item); | |
| 410 assert.is_number(item); | |
| 411 assert((item == last_item2 + 1) or item == 3); | |
| 412 last_item2 = item; | |
| 413 if item == 3 then | |
| 414 wait2, done2 = async.waiter(); | |
| 415 wait2(); | |
| 416 end | |
| 417 end, "r2"); | |
| 418 | |
| 419 r1:run(1); | |
| 420 assert.equal(r1.state, "ready"); | |
| 421 r1:run(2); | |
| 422 assert.equal(r1.state, "ready"); | |
| 423 | |
| 424 r1:run(5); | |
| 425 assert.equal(r1.state, "ready"); | |
| 426 | |
| 427 local dones = {}; | |
| 428 r1:run(3); | |
| 429 assert.equal(r1.state, "waiting"); | |
| 430 r1:run(5); -- Will error, when we get to it | |
| 431 assert.equal(r1.state, "waiting"); | |
| 432 done1(); | |
| 433 assert.equal(r1.state, "ready"); | |
| 434 r1:run(3); | |
| 435 assert.equal(r1.state, "waiting"); | |
| 436 | |
| 437 r2:run(1); | |
| 438 assert.equal(r1.state, "waiting"); | |
| 439 assert.equal(r2.state, "ready"); | |
| 440 | |
| 441 r2:run(2); | |
| 442 assert.equal(r1.state, "waiting"); | |
| 443 assert.equal(r2.state, "ready"); | |
| 444 | |
| 445 r2:run(3); | |
| 446 assert.equal(r1.state, "waiting"); | |
| 447 assert.equal(r2.state, "waiting"); | |
| 448 | |
| 449 done2(); | |
| 450 assert.equal(r1.state, "waiting"); | |
| 451 assert.equal(r2.state, "ready"); | |
| 452 | |
| 453 r2:run(3); | |
| 454 assert.equal(r1.state, "waiting"); | |
| 455 assert.equal(r2.state, "waiting"); | |
| 456 | |
| 457 done2(); | |
| 458 assert.equal(r1.state, "waiting"); | |
| 459 assert.equal(r2.state, "ready"); | |
| 460 | |
| 461 r2:run(4); | |
| 462 assert.equal(r1.state, "waiting"); | |
| 463 assert.equal(r2.state, "ready"); | |
| 464 | |
| 465 done1(); | |
| 466 | |
| 467 assert.equal(r1.state, "ready"); | |
| 468 r1:run(4); | |
| 469 assert.equal(r1.state, "ready"); | |
| 470 | |
| 471 assert.equal(r1.state, "ready"); | |
| 472 --for k, v in ipairs(l1) do print(k,v) end | |
| 473 end); | |
| 474 end); | |
| 475 end); |
