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spec/util_async_spec.lua @ 8616:a15c891c6232
util.async: ensure change in e77b37de482e applies after out-of-loop resume also
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 17 Mar 2018 17:28:07 +0000 |
parent | 8615:e77b37de482e |
child | 8617:fafb4036771c |
rev | line source |
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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 |
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184 it("should continue to process work items during resume", function () |
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185 local wait, done, last_item; |
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186 local runner_func = spy.new(function (item) |
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187 if item == "error" then |
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188 error("test error"); |
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189 elseif item == "wait-error" then |
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190 wait, done = async.waiter(); |
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191 wait(); |
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192 error("test error"); |
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193 end |
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194 last_item = item; |
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195 end); |
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196 local runner = async.runner(runner_func, { error = spy.new(function () end) }); |
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197 runner:enqueue("one"); |
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198 runner:enqueue("wait-error"); |
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199 runner:enqueue("two"); |
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200 runner:run(); |
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201 done(); |
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202 assert.equal(r.state, "ready"); |
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203 assert.equal(r.state, r.notified_state); |
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204 assert.spy(runner_func).was.called(3); |
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205 assert.spy(runner.watchers.error).was.called(1); |
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206 assert.equal(last_item, "two"); |
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207 end); |
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208 end); |
8605 | 209 end); |
210 describe("#waiter", function() | |
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211 it("should error outside of async context", function () |
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212 assert.has_error(function () |
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213 async.waiter(); |
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214 end); |
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215 end); |
8605 | 216 it("should work", function () |
217 local wait, done; | |
218 | |
219 local r, l = new(function (item) | |
220 assert(type(item) == "number") | |
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 done(); | |
234 assert(r.state == "ready"); | |
235 --for k, v in ipairs(l) do print(k,v) end | |
236 end); | |
237 | |
238 it("should work", function () | |
239 -------------------- | |
240 local wait, done; | |
241 local last_item = 0; | |
242 local r, l = new(function (item) | |
243 assert(type(item) == "number") | |
244 assert(item == last_item + 1); | |
245 last_item = item; | |
246 if item == 3 then | |
247 wait, done = async.waiter(); | |
248 wait(); | |
249 end | |
250 end); | |
251 | |
252 r:run(1); | |
253 assert(r.state == "ready"); | |
254 r:run(2); | |
255 assert(r.state == "ready"); | |
256 r:run(3); | |
257 assert(r.state == "waiting"); | |
258 r:run(4); | |
259 assert(r.state == "waiting"); | |
260 done(); | |
261 assert(r.state == "ready"); | |
262 --for k, v in ipairs(l) do print(k,v) end | |
263 end); | |
264 it("should work", function () | |
265 -------------------- | |
266 local wait, done; | |
267 local last_item = 0; | |
268 local r, l = new(function (item) | |
269 assert(type(item) == "number") | |
270 assert((item == last_item + 1) or item == 3); | |
271 last_item = item; | |
272 if item == 3 then | |
273 wait, done = async.waiter(); | |
274 wait(); | |
275 end | |
276 end); | |
277 | |
278 r:run(1); | |
279 assert(r.state == "ready"); | |
280 r:run(2); | |
281 assert(r.state == "ready"); | |
282 | |
283 local dones = {}; | |
284 r:run(3); | |
285 assert(r.state == "waiting"); | |
286 r:run(3); | |
287 assert(r.state == "waiting"); | |
288 r:run(3); | |
289 assert(r.state == "waiting"); | |
290 r:run(4); | |
291 assert(r.state == "waiting"); | |
292 | |
293 for i = 1, 3 do | |
294 done(); | |
295 if i < 3 then | |
296 assert(r.state == "waiting"); | |
297 end | |
298 end | |
299 | |
300 assert(r.state == "ready"); | |
301 --for k, v in ipairs(l) do print(k,v) end | |
302 end); | |
303 it("should work", function () | |
304 -------------------- | |
305 local wait, done; | |
306 local last_item = 0; | |
307 local r, l = new(function (item) | |
308 assert(type(item) == "number") | |
309 assert((item == last_item + 1) or item == 3); | |
310 last_item = item; | |
311 if item == 3 then | |
312 wait, done = async.waiter(); | |
313 wait(); | |
314 end | |
315 end); | |
316 | |
317 r:run(1); | |
318 assert(r.state == "ready"); | |
319 r:run(2); | |
320 assert(r.state == "ready"); | |
321 | |
322 local dones = {}; | |
323 r:run(3); | |
324 assert(r.state == "waiting"); | |
325 r:run(3); | |
326 assert(r.state == "waiting"); | |
327 | |
328 for i = 1, 2 do | |
329 done(); | |
330 if i < 2 then | |
331 assert(r.state == "waiting"); | |
332 end | |
333 end | |
334 | |
335 assert(r.state == "ready"); | |
336 r:run(4); | |
337 assert(r.state == "ready"); | |
338 | |
339 assert(r.state == "ready"); | |
340 --for k, v in ipairs(l) do print(k,v) end | |
341 end); | |
342 it("should work with multiple runners in parallel", function () | |
343 -- Now with multiple runners | |
344 -------------------- | |
345 local wait1, done1; | |
346 local last_item1 = 0; | |
347 local r1, l1 = new(function (item) | |
348 assert(type(item) == "number") | |
349 assert((item == last_item1 + 1) or item == 3); | |
350 last_item1 = item; | |
351 if item == 3 then | |
352 wait1, done1 = async.waiter(); | |
353 wait1(); | |
354 end | |
355 end, "r1"); | |
356 | |
357 local wait2, done2; | |
358 local last_item2 = 0; | |
359 local r2, l2 = new(function (item) | |
360 assert(type(item) == "number") | |
361 assert((item == last_item2 + 1) or item == 3); | |
362 last_item2 = item; | |
363 if item == 3 then | |
364 wait2, done2 = async.waiter(); | |
365 wait2(); | |
366 end | |
367 end, "r2"); | |
368 | |
369 r1:run(1); | |
370 assert(r1.state == "ready"); | |
371 r1:run(2); | |
372 assert(r1.state == "ready"); | |
373 | |
374 local dones = {}; | |
375 r1:run(3); | |
376 assert(r1.state == "waiting"); | |
377 r1:run(3); | |
378 assert(r1.state == "waiting"); | |
379 | |
380 r2:run(1); | |
381 assert(r1.state == "waiting"); | |
382 assert(r2.state == "ready"); | |
383 | |
384 r2:run(2); | |
385 assert(r1.state == "waiting"); | |
386 assert(r2.state == "ready"); | |
387 | |
388 r2:run(3); | |
389 assert(r1.state == "waiting"); | |
390 assert(r2.state == "waiting"); | |
391 done2(); | |
392 | |
393 r2:run(3); | |
394 assert(r1.state == "waiting"); | |
395 assert(r2.state == "waiting"); | |
396 done2(); | |
397 | |
398 r2:run(4); | |
399 assert(r1.state == "waiting"); | |
400 assert(r2.state == "ready"); | |
401 | |
402 for i = 1, 2 do | |
403 done1(); | |
404 if i < 2 then | |
405 assert(r1.state == "waiting"); | |
406 end | |
407 end | |
408 | |
409 assert(r1.state == "ready"); | |
410 r1:run(4); | |
411 assert(r1.state == "ready"); | |
412 | |
413 assert(r1.state == "ready"); | |
414 --for k, v in ipairs(l1) do print(k,v) end | |
415 end); | |
416 it("should work work with multiple runners in parallel", function () | |
417 -------------------- | |
418 local wait1, done1; | |
419 local last_item1 = 0; | |
420 local r1, l1 = new(function (item) | |
421 print("r1 processing ", item); | |
422 assert(type(item) == "number") | |
423 assert((item == last_item1 + 1) or item == 3); | |
424 last_item1 = item; | |
425 if item == 3 then | |
426 wait1, done1 = async.waiter(); | |
427 wait1(); | |
428 end | |
429 end, "r1"); | |
430 | |
431 local wait2, done2; | |
432 local last_item2 = 0; | |
433 local r2, l2 = new(function (item) | |
434 print("r2 processing ", item); | |
435 assert.is_number(item); | |
436 assert((item == last_item2 + 1) or item == 3); | |
437 last_item2 = item; | |
438 if item == 3 then | |
439 wait2, done2 = async.waiter(); | |
440 wait2(); | |
441 end | |
442 end, "r2"); | |
443 | |
444 r1:run(1); | |
445 assert.equal(r1.state, "ready"); | |
446 r1:run(2); | |
447 assert.equal(r1.state, "ready"); | |
448 | |
449 r1:run(5); | |
450 assert.equal(r1.state, "ready"); | |
451 | |
452 local dones = {}; | |
453 r1:run(3); | |
454 assert.equal(r1.state, "waiting"); | |
455 r1:run(5); -- Will error, when we get to it | |
456 assert.equal(r1.state, "waiting"); | |
457 done1(); | |
458 assert.equal(r1.state, "ready"); | |
459 r1:run(3); | |
460 assert.equal(r1.state, "waiting"); | |
461 | |
462 r2:run(1); | |
463 assert.equal(r1.state, "waiting"); | |
464 assert.equal(r2.state, "ready"); | |
465 | |
466 r2:run(2); | |
467 assert.equal(r1.state, "waiting"); | |
468 assert.equal(r2.state, "ready"); | |
469 | |
470 r2:run(3); | |
471 assert.equal(r1.state, "waiting"); | |
472 assert.equal(r2.state, "waiting"); | |
473 | |
474 done2(); | |
475 assert.equal(r1.state, "waiting"); | |
476 assert.equal(r2.state, "ready"); | |
477 | |
478 r2:run(3); | |
479 assert.equal(r1.state, "waiting"); | |
480 assert.equal(r2.state, "waiting"); | |
481 | |
482 done2(); | |
483 assert.equal(r1.state, "waiting"); | |
484 assert.equal(r2.state, "ready"); | |
485 | |
486 r2:run(4); | |
487 assert.equal(r1.state, "waiting"); | |
488 assert.equal(r2.state, "ready"); | |
489 | |
490 done1(); | |
491 | |
492 assert.equal(r1.state, "ready"); | |
493 r1:run(4); | |
494 assert.equal(r1.state, "ready"); | |
495 | |
496 assert.equal(r1.state, "ready"); | |
497 --for k, v in ipairs(l1) do print(k,v) end | |
498 end); | |
499 end); | |
500 end); |