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ab242c513bf4
spec/util_async_spec.lua

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spec/util_async_spec.lua @ 8623:ab242c513bf4

util.async: tests: Add helper function to create mock watcher callbacks
author Matthew Wild <mwild1@gmail.com>
date Sat, 17 Mar 2018 18:12:31 +0000
parent 8622:92fee8a6c988
child 8624:5325f0e1791b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local async = require "util.async";
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2
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3 describe("util.async", function()
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4 local debug = false;
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5 local print = print;
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6 if debug then
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7 require "util.logger".add_simple_sink(print);
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8 else
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9 print = function () end
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10 end
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11
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12 local function mock_watchers()
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13 return setmetatable(mock{
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14 ready = function () end;
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15 waiting = function () end;
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16 error = function () end;
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17 }, {
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18 __index = function (_, event)
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19 -- Unexpected watcher called
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20 assert(false);
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21 end;
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22 })
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23 end
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24
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25 local function new(func, name)
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26 local log = {};
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27 return async.runner(func, mock_watchers()), log;
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28 end
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29 describe("#runner", function()
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30 it("should work", function()
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31 local r, l = new(function (item) assert(type(item) == "number") end);
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32 r:run(1);
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33 r:run(2);
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34 end);
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35
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36 it("should be ready after creation", function ()
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37 local r = async.runner(function (item) end);
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38 assert.equal(r.state, "ready");
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39 end);
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40
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41 it("should do nothing if the queue is empty", function ()
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42 local did_run;
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43 local r = async.runner(function (item) did_run = true end);
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44 r:run();
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45 assert.equal(r.state, "ready");
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46 assert.is_nil(did_run);
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47 r:run("hello");
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48 assert.is_true(did_run);
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49 end);
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50
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51 it("should support queuing work items without running", function ()
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52 local did_run;
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53 local r = async.runner(function (item) did_run = true end);
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54 r:enqueue("hello");
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55 assert.equal(r.state, "ready");
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56 assert.is_nil(did_run);
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57 r:run();
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58 assert.is_true(did_run);
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59 end);
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60
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61 it("should support queuing multiple work items", function ()
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62 local last_item;
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63 local s = spy(function (item) last_item = item; end);
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64 local r = async.runner(s);
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65 r:enqueue("hello");
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66 r:enqueue("there");
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67 r:enqueue("world");
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68 assert.equal(r.state, "ready");
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69 r:run();
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70 assert.equal(r.state, "ready");
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71 assert.spy(s).was.called(3);
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72 assert.equal(last_item, "world");
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73 end);
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74
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75 it("should support all simple data types", function ()
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76 local last_item;
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77 local s = spy(function (item) last_item = item; end);
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78 local r = async.runner(s);
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79 local values = { {}, 123, "hello", true, false };
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80 for i = 1, #values do
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81 r:enqueue(values[i]);
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82 end
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83 assert.equal(r.state, "ready");
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84 r:run();
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85 assert.equal(r.state, "ready");
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86 assert.spy(s).was.called(#values);
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87 for i = 1, #values do
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88 assert.spy(s).was.called_with(values[i]);
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89 end
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90 assert.equal(last_item, values[#values]);
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91 end);
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92
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93 describe("#errors", function ()
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94 describe("should notify", function ()
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95 local last_processed_item, last_error;
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96 local r;
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97 r = async.runner(function (item)
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98 if item == "error" then
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99 error({ e = "test error" });
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100 end
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101 last_processed_item = item;
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102 end, mock{
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103 ready = function () end;
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104 waiting = function () end;
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105 error = function (runner, err)
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106 assert.equal(r, runner);
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107 last_error = err;
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108 end;
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109 });
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110
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111 -- Simple item, no error
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112 r:run("hello");
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113 assert.equal(r.state, "ready");
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114 assert.equal(last_processed_item, "hello");
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115 assert.spy(r.watchers.ready).was_not.called();
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116 assert.spy(r.watchers.error).was_not.called();
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117
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118 -- Trigger an error inside the runner
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119 assert.equal(last_error, nil);
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120 r:run("error");
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121 test("the correct watcher functions", function ()
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122 -- Only the error watcher should have been called
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123 assert.spy(r.watchers.ready).was_not.called();
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124 assert.spy(r.watchers.waiting).was_not.called();
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125 assert.spy(r.watchers.error).was.called(1);
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126 end);
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127 test("with the correct error", function ()
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128 -- The error watcher state should be correct, to
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129 -- demonstrate the error was passed correctly
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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 end);
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134 assert.equal(r.state, "ready");
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135 assert.equal(last_processed_item, "hello");
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136 end);
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137
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138
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139 local last_processed_item, last_error;
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140 local r;
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141 local wait, done;
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142 r = async.runner(function (item)
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143 if item == "error" then
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144 error({ e = "test error" });
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145 elseif item == "wait" then
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146 wait, done = async.waiter();
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147 wait();
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148 error({ e = "post wait error" });
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149 end
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150 last_processed_item = item;
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151 end, mock({
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152 ready = function () end;
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153 waiting = function () end;
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154 error = function (runner, err)
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155 assert.equal(r, runner);
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156 last_error = err;
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157 end;
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158 }));
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159
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160 randomize(false);
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161
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162 it("should not be fatal to the runner", function ()
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163 r:run("world");
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164 assert.equal(r.state, "ready");
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165 assert.spy(r.watchers.ready).was_not.called();
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166 assert.equal(last_processed_item, "world");
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167 end);
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168 it("should work despite a #waiter", function ()
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169 -- This test covers an important case where a runner
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170 -- throws an error while being executed outside of the
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171 -- main loop. This happens when it was blocked ('waiting'),
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172 -- and then released (via a call to done()).
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173 last_error = nil;
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174 r:run("wait");
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175 assert.equal(r.state, "waiting");
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176 assert.spy(r.watchers.waiting).was.called(1);
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177 done();
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178 -- At this point an error happens (state goes error->ready)
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179 assert.equal(r.state, "ready");
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180 assert.spy(r.watchers.error).was.called(1);
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181 assert.spy(r.watchers.ready).was.called(1);
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182 assert.is_table(last_error);
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183 assert.equal(last_error.e, "post wait error");
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184 last_error = nil;
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185 r:run("hello again");
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186 assert.spy(r.watchers.ready).was.called(1);
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187 assert.spy(r.watchers.waiting).was.called(1);
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188 assert.spy(r.watchers.error).was.called(1);
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189 assert.equal(r.state, "ready");
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190 assert.equal(last_processed_item, "hello again");
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191 end);
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192
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193 it("should continue to process work items", function ()
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194 local wait, done, last_item;
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195 local runner_func = spy.new(function (item)
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196 if item == "error" then
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197 error("test error");
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198 end
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199 last_item = item;
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200 end);
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201 local runner = async.runner(runner_func, mock{
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202 ready = function () end;
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203 waiting = function () end;
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204 error = function () end;
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205 });
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206 runner:enqueue("one");
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207 runner:enqueue("error");
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208 runner:enqueue("two");
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209 runner:run();
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210 assert.equal(r.state, "ready");
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211 assert.spy(runner_func).was.called(3);
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212 assert.spy(runner.watchers.error).was.called(1);
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213 assert.spy(runner.watchers.ready).was.called(0);
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214 assert.spy(runner.watchers.waiting).was.called(0);
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215 assert.equal(last_item, "two");
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216 end);
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217
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218 it("should continue to process work items during resume", function ()
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219 local wait, done, last_item;
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220 local runner_func = spy.new(function (item)
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221 if item == "wait-error" then
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222 wait, done = async.waiter();
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223 wait();
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224 error("test error");
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225 end
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226 last_item = item;
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227 end);
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228 local runner = async.runner(runner_func, mock{
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229 ready = function () end;
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230 waiting = function () end;
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231 error = function () end;
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232 });
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233 runner:enqueue("one");
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234 runner:enqueue("wait-error");
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235 runner:enqueue("two");
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236 runner:run();
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237 done();
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238 assert.equal(r.state, "ready");
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239 assert.spy(runner_func).was.called(3);
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240 assert.spy(runner.watchers.error).was.called(1);
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241 assert.spy(runner.watchers.waiting).was.called(1);
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242 assert.spy(runner.watchers.ready).was.called(1);
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243 assert.equal(last_item, "two");
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244 end);
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245 end);
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246 end);
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247 describe("#waiter", function()
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248 it("should error outside of async context", function ()
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249 assert.has_error(function ()
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250 async.waiter();
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251 end);
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252 end);
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253 it("should work", function ()
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254 local wait, done;
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255
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256 local r, l = new(function (item)
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257 assert(type(item) == "number")
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258 if item == 3 then
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259 wait, done = async.waiter();
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260 wait();
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261 end
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262 end);
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263
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264 r:run(1);
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265 assert(r.state == "ready");
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266 r:run(2);
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267 assert(r.state == "ready");
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268 r:run(3);
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269 assert(r.state == "waiting");
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270 done();
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271 assert(r.state == "ready");
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272 --for k, v in ipairs(l) do print(k,v) end
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273 end);
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274
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275 it("should work", function ()
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276 --------------------
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277 local wait, done;
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278 local last_item = 0;
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279 local r, l = new(function (item)
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280 assert(type(item) == "number")
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281 assert(item == last_item + 1);
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282 last_item = item;
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283 if item == 3 then
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284 wait, done = async.waiter();
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285 wait();
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286 end
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287 end);
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288
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289 r:run(1);
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290 assert(r.state == "ready");
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291 r:run(2);
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292 assert(r.state == "ready");
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293 r:run(3);
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294 assert(r.state == "waiting");
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295 r:run(4);
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296 assert(r.state == "waiting");
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297 done();
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298 assert(r.state == "ready");
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299 --for k, v in ipairs(l) do print(k,v) end
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300 end);
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301 it("should work", function ()
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302 --------------------
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303 local wait, done;
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304 local last_item = 0;
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305 local r, l = new(function (item)
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306 assert(type(item) == "number")
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307 assert((item == last_item + 1) or item == 3);
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308 last_item = item;
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309 if item == 3 then
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310 wait, done = async.waiter();
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311 wait();
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312 end
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313 end);
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314
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315 r:run(1);
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316 assert(r.state == "ready");
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317 r:run(2);
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318 assert(r.state == "ready");
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319
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320 local dones = {};
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321 r:run(3);
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322 assert(r.state == "waiting");
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323 r:run(3);
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324 assert(r.state == "waiting");
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325 r:run(3);
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326 assert(r.state == "waiting");
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327 r:run(4);
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328 assert(r.state == "waiting");
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329
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330 for i = 1, 3 do
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331 done();
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332 if i < 3 then
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333 assert(r.state == "waiting");
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334 end
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335 end
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336
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337 assert(r.state == "ready");
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338 --for k, v in ipairs(l) do print(k,v) end
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339 end);
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340 it("should work", function ()
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341 --------------------
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342 local wait, done;
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343 local last_item = 0;
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344 local r, l = new(function (item)
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345 assert(type(item) == "number")
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346 assert((item == last_item + 1) or item == 3);
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347 last_item = item;
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348 if item == 3 then
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349 wait, done = async.waiter();
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350 wait();
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351 end
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352 end);
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353
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354 r:run(1);
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355 assert(r.state == "ready");
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356 r:run(2);
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357 assert(r.state == "ready");
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358
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359 local dones = {};
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360 r:run(3);
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361 assert(r.state == "waiting");
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362 r:run(3);
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363 assert(r.state == "waiting");
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364
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365 for i = 1, 2 do
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366 done();
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367 if i < 2 then
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368 assert(r.state == "waiting");
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369 end
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370 end
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371
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372 assert(r.state == "ready");
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373 r:run(4);
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374 assert(r.state == "ready");
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375
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376 assert(r.state == "ready");
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377 --for k, v in ipairs(l) do print(k,v) end
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378 end);
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379 it("should work with multiple runners in parallel", function ()
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380 -- Now with multiple runners
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381 --------------------
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382 local wait1, done1;
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383 local last_item1 = 0;
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384 local r1, l1 = new(function (item)
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diff changeset
385 assert(type(item) == "number")
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386 assert((item == last_item1 + 1) or item == 3);
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387 last_item1 = item;
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388 if item == 3 then
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389 wait1, done1 = async.waiter();
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390 wait1();
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391 end
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392 end, "r1");
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393
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394 local wait2, done2;
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diff changeset
395 local last_item2 = 0;
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396 local r2, l2 = new(function (item)
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diff changeset
397 assert(type(item) == "number")
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diff changeset
398 assert((item == last_item2 + 1) or item == 3);
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399 last_item2 = item;
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400 if item == 3 then
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diff changeset
401 wait2, done2 = async.waiter();
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diff changeset
402 wait2();
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403 end
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404 end, "r2");
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405
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406 r1:run(1);
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diff changeset
407 assert(r1.state == "ready");
3a1efc0532cb util.async: Add tests
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408 r1:run(2);
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diff changeset
409 assert(r1.state == "ready");
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410
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411 local dones = {};
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diff changeset
412 r1:run(3);
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parents:
diff changeset
413 assert(r1.state == "waiting");
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414 r1:run(3);
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415 assert(r1.state == "waiting");
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416
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417 r2:run(1);
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418 assert(r1.state == "waiting");
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419 assert(r2.state == "ready");
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420
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421 r2:run(2);
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diff changeset
422 assert(r1.state == "waiting");
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423 assert(r2.state == "ready");
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424
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425 r2:run(3);
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diff changeset
426 assert(r1.state == "waiting");
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427 assert(r2.state == "waiting");
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428 done2();
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429
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430 r2:run(3);
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diff changeset
431 assert(r1.state == "waiting");
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432 assert(r2.state == "waiting");
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433 done2();
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434
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435 r2:run(4);
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diff changeset
436 assert(r1.state == "waiting");
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437 assert(r2.state == "ready");
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438
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439 for i = 1, 2 do
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diff changeset
440 done1();
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441 if i < 2 then
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diff changeset
442 assert(r1.state == "waiting");
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parents:
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443 end
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Matthew Wild <mwild1@gmail.com>
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444 end
8622
92fee8a6c988 util.async: Trim trailing whitespace in tests [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8618
diff changeset
445
8605
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
446 assert(r1.state == "ready");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
447 r1:run(4);
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
448 assert(r1.state == "ready");
8622
92fee8a6c988 util.async: Trim trailing whitespace in tests [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8618
diff changeset
449
8605
3a1efc0532cb util.async: Add tests
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450 assert(r1.state == "ready");
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451 --for k, v in ipairs(l1) do print(k,v) end
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Matthew Wild <mwild1@gmail.com>
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452 end);
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Matthew Wild <mwild1@gmail.com>
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diff changeset
453 it("should work work with multiple runners in parallel", function ()
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Matthew Wild <mwild1@gmail.com>
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454 --------------------
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
455 local wait1, done1;
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Matthew Wild <mwild1@gmail.com>
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456 local last_item1 = 0;
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Matthew Wild <mwild1@gmail.com>
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457 local r1, l1 = new(function (item)
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458 print("r1 processing ", item);
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
459 assert(type(item) == "number")
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Matthew Wild <mwild1@gmail.com>
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diff changeset
460 assert((item == last_item1 + 1) or item == 3);
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
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461 last_item1 = item;
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462 if item == 3 then
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
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463 wait1, done1 = async.waiter();
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Matthew Wild <mwild1@gmail.com>
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464 wait1();
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465 end
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466 end, "r1");
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parents:
diff changeset
467
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
468 local wait2, done2;
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469 local last_item2 = 0;
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470 local r2, l2 = new(function (item)
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471 print("r2 processing ", item);
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Matthew Wild <mwild1@gmail.com>
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diff changeset
472 assert.is_number(item);
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Matthew Wild <mwild1@gmail.com>
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473 assert((item == last_item2 + 1) or item == 3);
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Matthew Wild <mwild1@gmail.com>
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474 last_item2 = item;
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
475 if item == 3 then
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Matthew Wild <mwild1@gmail.com>
parents:
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476 wait2, done2 = async.waiter();
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
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diff changeset
477 wait2();
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478 end
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Matthew Wild <mwild1@gmail.com>
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479 end, "r2");
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480
3a1efc0532cb util.async: Add tests
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481 r1:run(1);
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482 assert.equal(r1.state, "ready");
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483 r1:run(2);
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parents:
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484 assert.equal(r1.state, "ready");
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parents:
diff changeset
485
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parents:
diff changeset
486 r1:run(5);
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487 assert.equal(r1.state, "ready");
3a1efc0532cb util.async: Add tests
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parents:
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488
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489 local dones = {};
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parents:
diff changeset
490 r1:run(3);
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parents:
diff changeset
491 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
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492 r1:run(5); -- Will error, when we get to it
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diff changeset
493 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
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494 done1();
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
495 assert.equal(r1.state, "ready");
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
496 r1:run(3);
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
497 assert.equal(r1.state, "waiting");
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
498
3a1efc0532cb util.async: Add tests
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diff changeset
499 r2:run(1);
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
500 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
501 assert.equal(r2.state, "ready");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
502
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diff changeset
503 r2:run(2);
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
504 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
505 assert.equal(r2.state, "ready");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
506
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
507 r2:run(3);
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parents:
diff changeset
508 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
509 assert.equal(r2.state, "waiting");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
510
3a1efc0532cb util.async: Add tests
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diff changeset
511 done2();
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
512 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
513 assert.equal(r2.state, "ready");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
514
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
515 r2:run(3);
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
516 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
517 assert.equal(r2.state, "waiting");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
518
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
519 done2();
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
520 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
521 assert.equal(r2.state, "ready");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
522
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
523 r2:run(4);
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
524 assert.equal(r1.state, "waiting");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
525 assert.equal(r2.state, "ready");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
526
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
527 done1();
8622
92fee8a6c988 util.async: Trim trailing whitespace in tests [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8618
diff changeset
528
8605
3a1efc0532cb util.async: Add tests
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529 assert.equal(r1.state, "ready");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
530 r1:run(4);
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
531 assert.equal(r1.state, "ready");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
532
3a1efc0532cb util.async: Add tests
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parents:
diff changeset
533 assert.equal(r1.state, "ready");
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
534 --for k, v in ipairs(l1) do print(k,v) end
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
535 end);
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
536 end);
3a1efc0532cb util.async: Add tests
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
537 end);