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spec/util_async_spec.lua @ 8958:b10a37f6f75f
util.startup: Add a comment marking some compat code
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 01 Jul 2018 23:22:55 +0200 |
| parent | 8683:867ac771fb6e |
| child | 10541:6c6ff4509082 |
| 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 | |
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11 |
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12 local function mock_watchers(event_log) |
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13 local function generic_logging_watcher(name) |
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14 return function (...) |
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15 table.insert(event_log, { name = name, n = select("#", ...)-1, select(2, ...) }); |
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16 end; |
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17 end; |
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18 return setmetatable(mock{ |
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19 ready = generic_logging_watcher("ready"); |
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20 waiting = generic_logging_watcher("waiting"); |
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21 error = generic_logging_watcher("error"); |
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22 }, { |
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23 __index = function (_, event) |
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24 -- Unexpected watcher called |
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25 assert(false, "unexpected watcher called: "..event); |
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26 end; |
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27 }) |
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28 end |
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29 |
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30 local function new(func) |
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31 local event_log = {}; |
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32 local spy_func = spy.new(func); |
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33 return async.runner(spy_func, mock_watchers(event_log)), spy_func, event_log; |
| 8605 | 34 end |
| 35 describe("#runner", function() | |
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36 it("should work", function() |
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37 local r = new(function (item) assert(type(item) == "number") end); |
| 8605 | 38 r:run(1); |
| 39 r:run(2); | |
| 40 end); | |
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41 |
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42 it("should be ready after creation", function () |
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43 local r = new(function () end); |
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44 assert.equal(r.state, "ready"); |
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45 end); |
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46 |
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47 it("should do nothing if the queue is empty", function () |
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48 local did_run; |
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49 local r = new(function () did_run = true end); |
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50 r:run(); |
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51 assert.equal(r.state, "ready"); |
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52 assert.is_nil(did_run); |
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53 r:run("hello"); |
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54 assert.is_true(did_run); |
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55 end); |
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56 |
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57 it("should support queuing work items without running", function () |
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58 local did_run; |
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59 local r = new(function () did_run = true end); |
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60 r:enqueue("hello"); |
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61 assert.equal(r.state, "ready"); |
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62 assert.is_nil(did_run); |
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63 r:run(); |
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64 assert.is_true(did_run); |
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65 end); |
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66 |
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67 it("should support queuing multiple work items", function () |
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68 local last_item; |
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69 local r, s = new(function (item) last_item = item; end); |
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70 r:enqueue("hello"); |
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71 r:enqueue("there"); |
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72 r:enqueue("world"); |
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73 assert.equal(r.state, "ready"); |
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74 r:run(); |
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75 assert.equal(r.state, "ready"); |
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76 assert.spy(s).was.called(3); |
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77 assert.equal(last_item, "world"); |
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78 end); |
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79 |
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80 it("should support all simple data types", function () |
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81 local last_item; |
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82 local r, s = new(function (item) last_item = item; end); |
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83 local values = { {}, 123, "hello", true, false }; |
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84 for i = 1, #values do |
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85 r:enqueue(values[i]); |
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86 end |
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87 assert.equal(r.state, "ready"); |
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88 r:run(); |
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89 assert.equal(r.state, "ready"); |
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90 assert.spy(s).was.called(#values); |
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91 for i = 1, #values do |
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92 assert.spy(s).was.called_with(values[i]); |
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93 end |
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94 assert.equal(last_item, values[#values]); |
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95 end); |
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96 |
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97 it("should work with no parameters", function () |
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98 local item = "fail"; |
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99 local r = async.runner(); |
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100 local f = spy.new(function () item = "success"; end); |
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101 r:run(f); |
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102 assert.spy(f).was.called(); |
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103 assert.equal(item, "success"); |
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104 end); |
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105 |
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106 it("supports a default error handler", function () |
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107 local item = "fail"; |
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108 local r = async.runner(); |
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109 local f = spy.new(function () error("test error"); end); |
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110 assert.error_matches(function () |
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111 r:run(f); |
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112 end, "test error"); |
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113 assert.spy(f).was.called(); |
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114 assert.equal(item, "fail"); |
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115 end); |
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116 |
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117 describe("#errors", function () |
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118 describe("should notify", function () |
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119 local last_processed_item, last_error; |
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120 local r; |
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121 r = async.runner(function (item) |
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122 if item == "error" then |
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123 error({ e = "test error" }); |
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124 end |
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125 last_processed_item = item; |
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126 end, mock{ |
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127 ready = function () end; |
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128 waiting = function () end; |
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129 error = function (runner, err) |
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130 assert.equal(r, runner); |
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131 last_error = err; |
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132 end; |
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133 }); |
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134 |
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135 -- Simple item, no error |
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136 r:run("hello"); |
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137 assert.equal(r.state, "ready"); |
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138 assert.equal(last_processed_item, "hello"); |
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139 assert.spy(r.watchers.ready).was_not.called(); |
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140 assert.spy(r.watchers.error).was_not.called(); |
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141 |
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142 -- Trigger an error inside the runner |
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143 assert.equal(last_error, nil); |
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144 r:run("error"); |
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145 test("the correct watcher functions", function () |
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146 -- Only the error watcher should have been called |
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147 assert.spy(r.watchers.ready).was_not.called(); |
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148 assert.spy(r.watchers.waiting).was_not.called(); |
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149 assert.spy(r.watchers.error).was.called(1); |
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150 end); |
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151 test("with the correct error", function () |
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152 -- The error watcher state should be correct, to |
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153 -- demonstrate the error was passed correctly |
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154 assert.is_table(last_error); |
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155 assert.equal(last_error.e, "test error"); |
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156 last_error = nil; |
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157 end); |
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158 assert.equal(r.state, "ready"); |
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159 assert.equal(last_processed_item, "hello"); |
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160 end); |
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161 |
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162 do |
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163 local last_processed_item, last_error; |
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164 local r; |
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165 local wait, done; |
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166 r = async.runner(function (item) |
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167 if item == "error" then |
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168 error({ e = "test error" }); |
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169 elseif item == "wait" then |
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170 wait, done = async.waiter(); |
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171 wait(); |
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172 error({ e = "post wait error" }); |
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173 end |
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174 last_processed_item = item; |
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175 end, mock({ |
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176 ready = function () end; |
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177 waiting = function () end; |
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178 error = function (runner, err) |
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179 assert.equal(r, runner); |
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180 last_error = err; |
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181 end; |
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182 })); |
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183 |
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184 randomize(false); --luacheck: ignore 113/randomize |
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185 |
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186 it("should not be fatal to the runner", function () |
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187 r:run("world"); |
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188 assert.equal(r.state, "ready"); |
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189 assert.spy(r.watchers.ready).was_not.called(); |
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190 assert.equal(last_processed_item, "world"); |
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191 end); |
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192 it("should work despite a #waiter", function () |
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193 -- This test covers an important case where a runner |
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194 -- throws an error while being executed outside of the |
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195 -- main loop. This happens when it was blocked ('waiting'), |
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196 -- and then released (via a call to done()). |
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197 last_error = nil; |
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198 r:run("wait"); |
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199 assert.equal(r.state, "waiting"); |
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200 assert.spy(r.watchers.waiting).was.called(1); |
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201 done(); |
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202 -- At this point an error happens (state goes error->ready) |
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203 assert.equal(r.state, "ready"); |
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204 assert.spy(r.watchers.error).was.called(1); |
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205 assert.spy(r.watchers.ready).was.called(1); |
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206 assert.is_table(last_error); |
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207 assert.equal(last_error.e, "post wait error"); |
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208 last_error = nil; |
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209 r:run("hello again"); |
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210 assert.spy(r.watchers.ready).was.called(1); |
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211 assert.spy(r.watchers.waiting).was.called(1); |
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212 assert.spy(r.watchers.error).was.called(1); |
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213 assert.equal(r.state, "ready"); |
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214 assert.equal(last_processed_item, "hello again"); |
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215 end); |
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216 end |
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217 |
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218 it("should continue to process work items", function () |
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219 local last_item; |
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220 local runner, runner_func = new(function (item) |
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221 if item == "error" then |
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222 error("test error"); |
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223 end |
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224 last_item = item; |
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225 end); |
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226 runner:enqueue("one"); |
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227 runner:enqueue("error"); |
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228 runner:enqueue("two"); |
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229 runner:run(); |
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230 assert.equal(runner.state, "ready"); |
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231 assert.spy(runner_func).was.called(3); |
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232 assert.spy(runner.watchers.error).was.called(1); |
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233 assert.spy(runner.watchers.ready).was.called(0); |
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234 assert.spy(runner.watchers.waiting).was.called(0); |
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235 assert.equal(last_item, "two"); |
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236 end); |
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237 |
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238 it("should continue to process work items during resume", function () |
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239 local wait, done, last_item; |
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240 local runner, runner_func = new(function (item) |
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241 if item == "wait-error" then |
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242 wait, done = async.waiter(); |
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243 wait(); |
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244 error("test error"); |
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245 end |
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246 last_item = item; |
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247 end); |
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248 runner:enqueue("one"); |
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249 runner:enqueue("wait-error"); |
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250 runner:enqueue("two"); |
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251 runner:run(); |
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252 done(); |
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253 assert.equal(runner.state, "ready"); |
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254 assert.spy(runner_func).was.called(3); |
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255 assert.spy(runner.watchers.error).was.called(1); |
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256 assert.spy(runner.watchers.waiting).was.called(1); |
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257 assert.spy(runner.watchers.ready).was.called(1); |
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258 assert.equal(last_item, "two"); |
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259 end); |
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260 end); |
| 8605 | 261 end); |
| 262 describe("#waiter", function() | |
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263 it("should error outside of async context", function () |
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264 assert.has_error(function () |
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265 async.waiter(); |
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266 end); |
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267 end); |
| 8605 | 268 it("should work", function () |
| 269 local wait, done; | |
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270 |
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271 local r = new(function (item) |
| 8605 | 272 assert(type(item) == "number") |
| 273 if item == 3 then | |
| 274 wait, done = async.waiter(); | |
| 275 wait(); | |
| 276 end | |
| 277 end); | |
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278 |
| 8605 | 279 r:run(1); |
| 280 assert(r.state == "ready"); | |
| 281 r:run(2); | |
| 282 assert(r.state == "ready"); | |
| 283 r:run(3); | |
| 284 assert(r.state == "waiting"); | |
| 285 done(); | |
| 286 assert(r.state == "ready"); | |
| 287 --for k, v in ipairs(l) do print(k,v) end | |
| 288 end); | |
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289 |
| 8605 | 290 it("should work", function () |
| 291 -------------------- | |
| 292 local wait, done; | |
| 293 local last_item = 0; | |
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294 local r = new(function (item) |
| 8605 | 295 assert(type(item) == "number") |
| 296 assert(item == last_item + 1); | |
| 297 last_item = item; | |
| 298 if item == 3 then | |
| 299 wait, done = async.waiter(); | |
| 300 wait(); | |
| 301 end | |
| 302 end); | |
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303 |
| 8605 | 304 r:run(1); |
| 305 assert(r.state == "ready"); | |
| 306 r:run(2); | |
| 307 assert(r.state == "ready"); | |
| 308 r:run(3); | |
| 309 assert(r.state == "waiting"); | |
| 310 r:run(4); | |
| 311 assert(r.state == "waiting"); | |
| 312 done(); | |
| 313 assert(r.state == "ready"); | |
| 314 --for k, v in ipairs(l) do print(k,v) end | |
| 315 end); | |
| 316 it("should work", function () | |
| 317 -------------------- | |
| 318 local wait, done; | |
| 319 local last_item = 0; | |
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320 local r = new(function (item) |
| 8605 | 321 assert(type(item) == "number") |
| 322 assert((item == last_item + 1) or item == 3); | |
| 323 last_item = item; | |
| 324 if item == 3 then | |
| 325 wait, done = async.waiter(); | |
| 326 wait(); | |
| 327 end | |
| 328 end); | |
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329 |
| 8605 | 330 r:run(1); |
| 331 assert(r.state == "ready"); | |
| 332 r:run(2); | |
| 333 assert(r.state == "ready"); | |
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334 |
| 8605 | 335 r:run(3); |
| 336 assert(r.state == "waiting"); | |
| 337 r:run(3); | |
| 338 assert(r.state == "waiting"); | |
| 339 r:run(3); | |
| 340 assert(r.state == "waiting"); | |
| 341 r:run(4); | |
| 342 assert(r.state == "waiting"); | |
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343 |
| 8605 | 344 for i = 1, 3 do |
| 345 done(); | |
| 346 if i < 3 then | |
| 347 assert(r.state == "waiting"); | |
| 348 end | |
| 349 end | |
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350 |
| 8605 | 351 assert(r.state == "ready"); |
| 352 --for k, v in ipairs(l) do print(k,v) end | |
| 353 end); | |
| 354 it("should work", function () | |
| 355 -------------------- | |
| 356 local wait, done; | |
| 357 local last_item = 0; | |
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358 local r = new(function (item) |
| 8605 | 359 assert(type(item) == "number") |
| 360 assert((item == last_item + 1) or item == 3); | |
| 361 last_item = item; | |
| 362 if item == 3 then | |
| 363 wait, done = async.waiter(); | |
| 364 wait(); | |
| 365 end | |
| 366 end); | |
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367 |
| 8605 | 368 r:run(1); |
| 369 assert(r.state == "ready"); | |
| 370 r:run(2); | |
| 371 assert(r.state == "ready"); | |
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372 |
| 8605 | 373 r:run(3); |
| 374 assert(r.state == "waiting"); | |
| 375 r:run(3); | |
| 376 assert(r.state == "waiting"); | |
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377 |
| 8605 | 378 for i = 1, 2 do |
| 379 done(); | |
| 380 if i < 2 then | |
| 381 assert(r.state == "waiting"); | |
| 382 end | |
| 383 end | |
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384 |
| 8605 | 385 assert(r.state == "ready"); |
| 386 r:run(4); | |
| 387 assert(r.state == "ready"); | |
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388 |
| 8605 | 389 assert(r.state == "ready"); |
| 390 --for k, v in ipairs(l) do print(k,v) end | |
| 391 end); | |
| 392 it("should work with multiple runners in parallel", function () | |
| 393 -- Now with multiple runners | |
| 394 -------------------- | |
| 395 local wait1, done1; | |
| 396 local last_item1 = 0; | |
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397 local r1 = new(function (item) |
| 8605 | 398 assert(type(item) == "number") |
| 399 assert((item == last_item1 + 1) or item == 3); | |
| 400 last_item1 = item; | |
| 401 if item == 3 then | |
| 402 wait1, done1 = async.waiter(); | |
| 403 wait1(); | |
| 404 end | |
| 405 end, "r1"); | |
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406 |
| 8605 | 407 local wait2, done2; |
| 408 local last_item2 = 0; | |
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409 local r2 = new(function (item) |
| 8605 | 410 assert(type(item) == "number") |
| 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"); | |
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418 |
| 8605 | 419 r1:run(1); |
| 420 assert(r1.state == "ready"); | |
| 421 r1:run(2); | |
| 422 assert(r1.state == "ready"); | |
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423 |
| 8605 | 424 r1:run(3); |
| 425 assert(r1.state == "waiting"); | |
| 426 r1:run(3); | |
| 427 assert(r1.state == "waiting"); | |
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428 |
| 8605 | 429 r2:run(1); |
| 430 assert(r1.state == "waiting"); | |
| 431 assert(r2.state == "ready"); | |
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432 |
| 8605 | 433 r2:run(2); |
| 434 assert(r1.state == "waiting"); | |
| 435 assert(r2.state == "ready"); | |
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436 |
| 8605 | 437 r2:run(3); |
| 438 assert(r1.state == "waiting"); | |
| 439 assert(r2.state == "waiting"); | |
| 440 done2(); | |
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441 |
| 8605 | 442 r2:run(3); |
| 443 assert(r1.state == "waiting"); | |
| 444 assert(r2.state == "waiting"); | |
| 445 done2(); | |
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446 |
| 8605 | 447 r2:run(4); |
| 448 assert(r1.state == "waiting"); | |
| 449 assert(r2.state == "ready"); | |
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450 |
| 8605 | 451 for i = 1, 2 do |
| 452 done1(); | |
| 453 if i < 2 then | |
| 454 assert(r1.state == "waiting"); | |
| 455 end | |
| 456 end | |
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457 |
| 8605 | 458 assert(r1.state == "ready"); |
| 459 r1:run(4); | |
| 460 assert(r1.state == "ready"); | |
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461 |
| 8605 | 462 assert(r1.state == "ready"); |
| 463 --for k, v in ipairs(l1) do print(k,v) end | |
| 464 end); | |
| 465 it("should work work with multiple runners in parallel", function () | |
| 466 -------------------- | |
| 467 local wait1, done1; | |
| 468 local last_item1 = 0; | |
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469 local r1 = new(function (item) |
| 8605 | 470 print("r1 processing ", item); |
| 471 assert(type(item) == "number") | |
| 472 assert((item == last_item1 + 1) or item == 3); | |
| 473 last_item1 = item; | |
| 474 if item == 3 then | |
| 475 wait1, done1 = async.waiter(); | |
| 476 wait1(); | |
| 477 end | |
| 478 end, "r1"); | |
| 479 | |
| 480 local wait2, done2; | |
| 481 local last_item2 = 0; | |
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482 local r2 = new(function (item) |
| 8605 | 483 print("r2 processing ", item); |
| 484 assert.is_number(item); | |
| 485 assert((item == last_item2 + 1) or item == 3); | |
| 486 last_item2 = item; | |
| 487 if item == 3 then | |
| 488 wait2, done2 = async.waiter(); | |
| 489 wait2(); | |
| 490 end | |
| 491 end, "r2"); | |
| 492 | |
| 493 r1:run(1); | |
| 494 assert.equal(r1.state, "ready"); | |
| 495 r1:run(2); | |
| 496 assert.equal(r1.state, "ready"); | |
| 497 | |
| 498 r1:run(5); | |
| 499 assert.equal(r1.state, "ready"); | |
| 500 | |
| 501 r1:run(3); | |
| 502 assert.equal(r1.state, "waiting"); | |
| 503 r1:run(5); -- Will error, when we get to it | |
| 504 assert.equal(r1.state, "waiting"); | |
| 505 done1(); | |
| 506 assert.equal(r1.state, "ready"); | |
| 507 r1:run(3); | |
| 508 assert.equal(r1.state, "waiting"); | |
| 509 | |
| 510 r2:run(1); | |
| 511 assert.equal(r1.state, "waiting"); | |
| 512 assert.equal(r2.state, "ready"); | |
| 513 | |
| 514 r2:run(2); | |
| 515 assert.equal(r1.state, "waiting"); | |
| 516 assert.equal(r2.state, "ready"); | |
| 517 | |
| 518 r2:run(3); | |
| 519 assert.equal(r1.state, "waiting"); | |
| 520 assert.equal(r2.state, "waiting"); | |
| 521 | |
| 522 done2(); | |
| 523 assert.equal(r1.state, "waiting"); | |
| 524 assert.equal(r2.state, "ready"); | |
| 525 | |
| 526 r2:run(3); | |
| 527 assert.equal(r1.state, "waiting"); | |
| 528 assert.equal(r2.state, "waiting"); | |
| 529 | |
| 530 done2(); | |
| 531 assert.equal(r1.state, "waiting"); | |
| 532 assert.equal(r2.state, "ready"); | |
| 533 | |
| 534 r2:run(4); | |
| 535 assert.equal(r1.state, "waiting"); | |
| 536 assert.equal(r2.state, "ready"); | |
| 537 | |
| 538 done1(); | |
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539 |
| 8605 | 540 assert.equal(r1.state, "ready"); |
| 541 r1:run(4); | |
| 542 assert.equal(r1.state, "ready"); | |
| 543 | |
| 544 assert.equal(r1.state, "ready"); | |
| 545 end); | |
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546 |
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547 it("should support multiple done() calls", function () |
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548 local processed_item; |
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549 local wait, done; |
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550 local r, rf = new(function (item) |
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551 wait, done = async.waiter(4); |
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552 wait(); |
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553 processed_item = item; |
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554 end); |
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555 r:run("test"); |
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556 for _ = 1, 3 do |
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557 done(); |
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558 assert.equal(r.state, "waiting"); |
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559 assert.is_nil(processed_item); |
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560 end |
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561 done(); |
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562 assert.equal(r.state, "ready"); |
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563 assert.equal(processed_item, "test"); |
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564 assert.spy(r.watchers.error).was_not.called(); |
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565 end); |
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566 |
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567 it("should not allow done() to be called more than specified", function () |
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568 local processed_item; |
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569 local wait, done; |
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570 local r, rf = new(function (item) |
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571 wait, done = async.waiter(4); |
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572 wait(); |
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573 processed_item = item; |
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574 end); |
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575 r:run("test"); |
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576 for _ = 1, 4 do |
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577 done(); |
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578 end |
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579 assert.has_error(done); |
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580 assert.equal(r.state, "ready"); |
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581 assert.equal(processed_item, "test"); |
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582 assert.spy(r.watchers.error).was_not.called(); |
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583 end); |
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584 |
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585 it("should allow done() to be called before wait()", function () |
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586 local processed_item; |
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587 local r, rf = new(function (item) |
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588 local wait, done = async.waiter(); |
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589 done(); |
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590 wait(); |
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591 processed_item = item; |
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592 end); |
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593 r:run("test"); |
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594 assert.equal(processed_item, "test"); |
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595 assert.equal(r.state, "ready"); |
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596 -- Since the observable state did not change, |
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597 -- the watchers should not have been called |
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598 assert.spy(r.watchers.waiting).was_not.called(); |
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599 assert.spy(r.watchers.ready).was_not.called(); |
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600 end); |
| 8605 | 601 end); |
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602 |
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603 describe("#ready()", function () |
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604 it("should return false outside an async context", function () |
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605 assert.falsy(async.ready()); |
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606 end); |
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607 it("should return true inside an async context", function () |
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608 local r = new(function () |
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609 assert.truthy(async.ready()); |
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610 end); |
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611 r:run(true); |
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612 assert.spy(r.func).was.called(); |
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613 assert.spy(r.watchers.error).was_not.called(); |
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614 end); |
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615 end); |
| 8605 | 616 end); |
