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98de4c2e2627
spec/util_promise_spec.lua

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spec/util_promise_spec.lua @ 9550:98de4c2e2627

util.promise: Fix missing parameters
author Matthew Wild <mwild1@gmail.com>
date Thu, 25 Oct 2018 15:24:52 +0100
parent 9549:800c274928bf
child 9551:7421379ba464
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1 local promise = require "util.promise";
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2
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3 describe("util.promise", function ()
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4 --luacheck: ignore 212/resolve 212/reject
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5 describe("new()", function ()
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6 it("returns a promise object", function ()
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7 assert(promise.new());
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8 end);
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9 end);
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10 it("notifies immediately for fulfilled promises", function ()
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11 local p = promise.new(function (resolve)
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12 resolve("foo");
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13 end);
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14 local cb = spy.new(function (v)
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15 assert.equal("foo", v);
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16 end);
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17 p:next(cb);
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18 assert.spy(cb).was_called(1);
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19 end);
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20 it("notifies on fulfilment of pending promises", function ()
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21 local r;
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22 local p = promise.new(function (resolve)
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23 r = resolve;
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24 end);
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25 local cb = spy.new(function (v)
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26 assert.equal("foo", v);
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27 end);
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28 p:next(cb);
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29 assert.spy(cb).was_called(0);
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30 r("foo");
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31 assert.spy(cb).was_called(1);
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32 end);
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33 it("allows chaining :next() calls", function ()
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34 local r;
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35 local result;
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36 local p = promise.new(function (resolve)
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37 r = resolve;
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38 end);
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39 local cb1 = spy.new(function (v)
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40 assert.equal("foo", v);
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41 return "bar";
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42 end);
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43 local cb2 = spy.new(function (v)
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44 assert.equal("bar", v);
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45 result = v;
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46 end);
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47 p:next(cb1):next(cb2);
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48 assert.spy(cb1).was_called(0);
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49 assert.spy(cb2).was_called(0);
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50 r("foo");
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51 assert.spy(cb1).was_called(1);
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52 assert.spy(cb2).was_called(1);
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53 assert.equal("bar", result);
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54 end);
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55 it("supports multiple :next() calls on the same promise", function ()
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56 local r;
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57 local result;
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58 local p = promise.new(function (resolve)
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59 r = resolve;
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60 end);
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61 local cb1 = spy.new(function (v)
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62 assert.equal("foo", v);
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63 result = v;
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64 end);
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65 local cb2 = spy.new(function (v)
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66 assert.equal("foo", v);
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67 result = v;
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68 end);
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69 p:next(cb1);
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70 p:next(cb2);
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71 assert.spy(cb1).was_called(0);
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72 assert.spy(cb2).was_called(0);
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73 r("foo");
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74 assert.spy(cb1).was_called(1);
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75 assert.spy(cb2).was_called(1);
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76 assert.equal("foo", result);
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77 end);
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78 it("automatically rejects on error", function ()
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79 local r;
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80 local p = promise.new(function (resolve)
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81 r = resolve;
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82 error("oh no");
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83 end);
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84 local cb = spy.new(function () end);
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85 local err_cb = spy.new(function (v)
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86 assert.equal("oh no", v);
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87 end);
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88 p:next(cb, err_cb);
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89 assert.spy(cb).was_called(0);
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90 assert.spy(err_cb).was_called(1);
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91 r("foo");
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92 assert.spy(cb).was_called(0);
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93 assert.spy(err_cb).was_called(1);
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94 end);
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95 it("supports reject()", function ()
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96 local r, result;
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97 local p = promise.new(function (resolve, reject)
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98 r = reject;
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99 end);
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100 local cb = spy.new(function () end);
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101 local err_cb = spy.new(function (v)
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102 result = v;
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103 assert.equal("oh doh", v);
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104 end);
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105 p:next(cb, err_cb);
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106 assert.spy(cb).was_called(0);
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107 assert.spy(err_cb).was_called(0);
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108 r("oh doh");
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109 assert.spy(cb).was_called(0);
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110 assert.spy(err_cb).was_called(1);
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111 assert.equal("oh doh", result);
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112 end);
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113 it("supports chaining of rejected promises", function ()
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114 local r, result;
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115 local p = promise.new(function (resolve, reject)
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116 r = reject;
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117 end);
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118 local cb = spy.new(function () end);
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119 local err_cb = spy.new(function (v)
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120 result = v;
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121 assert.equal("oh doh", v);
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122 return "ok"
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123 end);
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124 local cb2 = spy.new(function (v)
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125 result = v;
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126 end);
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127 local err_cb2 = spy.new(function () end);
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128 p:next(cb, err_cb):next(cb2, err_cb2)
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129 assert.spy(cb).was_called(0);
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130 assert.spy(err_cb).was_called(0);
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131 assert.spy(cb2).was_called(0);
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132 assert.spy(err_cb2).was_called(0);
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133 r("oh doh");
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134 assert.spy(cb).was_called(0);
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135 assert.spy(err_cb).was_called(1);
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136 assert.spy(cb2).was_called(1);
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137 assert.spy(err_cb2).was_called(0);
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138 assert.equal("ok", result);
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139 end);
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140
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141 it("propagates errors down the chain, even when some handlers are not provided", function ()
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142 local r, result;
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143 local test_error = {};
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144 local p = promise.new(function (resolve, reject)
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145 r = reject;
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146 end);
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147 local cb = spy.new(function () end);
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148 local err_cb = spy.new(function (e) result = e end);
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149 local p2 = p:next(function () error(test_error) end);
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150 local p3 = p2:next(cb)
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151 p3:catch(err_cb);
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152 assert.spy(cb).was_called(0);
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153 assert.spy(err_cb).was_called(0);
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154 r("oh doh");
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155 assert.spy(cb).was_called(0);
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156 assert.spy(err_cb).was_called(1);
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157 assert.spy(err_cb).was_called_with("oh doh");
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158 assert.equal("oh doh", result);
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159 end);
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160
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161 it("propagates values down the chain, even when some handlers are not provided", function ()
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162 local r;
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163 local p = promise.new(function (resolve, reject)
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164 r = resolve;
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165 end);
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166 local cb = spy.new(function () end);
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167 local err_cb = spy.new(function () end);
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168 local p2 = p:next(function (v) return v; end);
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169 local p3 = p2:catch(err_cb)
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170 p3:next(cb);
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171 assert.spy(cb).was_called(0);
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172 assert.spy(err_cb).was_called(0);
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173 r(1337);
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174 assert.spy(cb).was_called(1);
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175 assert.spy(cb).was_called_with(1337);
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176 assert.spy(err_cb).was_called(0);
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177 end);
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178
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179 it("fulfilled promises do not call error handlers and do propagate value", function ()
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180 local p = promise.resolve("foo");
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181 local cb = spy.new(function () end);
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182 local p2 = p:catch(cb);
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183 assert.spy(cb).was_called(0);
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184
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185 local cb2 = spy.new(function () end);
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186 local p3 = p2:catch(cb2);
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187 assert.spy(cb2).was_called(0);
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188 end);
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189
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190 it("rejected promises do not call fulfilled handlers and do propagate reason", function ()
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191 local p = promise.reject("foo");
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192 local cb = spy.new(function () end);
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193 local p2 = p:next(cb);
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194 assert.spy(cb).was_called(0);
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195
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196 local cb2 = spy.new(function () end);
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197 local cb2_err = spy.new(function () end);
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198 local p3 = p2:next(cb2, cb2_err);
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199 assert.spy(cb2).was_called(0);
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200 assert.spy(cb2_err).was_called(1);
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201 assert.spy(cb2_err).was_called_with("foo");
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202 end);
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203
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204 describe("race()", function ()
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205 it("works with fulfilled promises", function ()
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206 local p1, p2 = promise.resolve("yep"), promise.resolve("nope");
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207 local p = promise.race({ p1, p2 });
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208 local result;
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209 p:next(function (v)
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210 result = v;
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211 end);
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212 assert.equal("yep", result);
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213 end);
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214 it("works with pending promises", function ()
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215 local r1, r2;
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216 local p1, p2 = promise.new(function (resolve) r1 = resolve end), promise.new(function (resolve) r2 = resolve end);
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217 local p = promise.race({ p1, p2 });
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218
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219 local result;
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220 local cb = spy.new(function (v)
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221 result = v;
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222 end);
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223 p:next(cb);
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224 assert.spy(cb).was_called(0);
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225 r2("yep");
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226 r1("nope");
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227 assert.spy(cb).was_called(1);
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228 assert.equal("yep", result);
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229 end);
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230 end);
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231 describe("all()", function ()
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232 it("works with fulfilled promises", function ()
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233 local p1, p2 = promise.resolve("yep"), promise.resolve("nope");
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234 local p = promise.all({ p1, p2 });
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235 local result;
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236 p:next(function (v)
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237 result = v;
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238 end);
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239 assert.same({ "yep", "nope" }, result);
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240 end);
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241 it("works with pending promises", function ()
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242 local r1, r2;
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243 local p1, p2 = promise.new(function (resolve) r1 = resolve end), promise.new(function (resolve) r2 = resolve end);
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244 local p = promise.all({ p1, p2 });
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245
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246 local result;
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247 local cb = spy.new(function (v)
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248 result = v;
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249 end);
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250 p:next(cb);
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251 assert.spy(cb).was_called(0);
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252 r2("yep");
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253 assert.spy(cb).was_called(0);
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254 r1("nope");
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255 assert.spy(cb).was_called(1);
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256 assert.same({ "nope", "yep" }, result);
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257 end);
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258 it("rejects if any promise rejects", function ()
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259 local r1, r2;
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260 local p1 = promise.new(function (resolve, reject) r1 = reject end);
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261 local p2 = promise.new(function (resolve, reject) r2 = reject end);
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262 local p = promise.all({ p1, p2 });
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263
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264 local result;
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265 local cb = spy.new(function (v)
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266 result = v;
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267 end);
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268 local cb_err = spy.new(function (v)
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269 result = v;
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270 end);
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271 p:next(cb, cb_err);
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272 assert.spy(cb).was_called(0);
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273 assert.spy(cb_err).was_called(0);
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274 r2("fail");
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275 assert.spy(cb).was_called(0);
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276 assert.spy(cb_err).was_called(1);
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277 r1("nope");
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278 assert.spy(cb).was_called(0);
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279 assert.spy(cb_err).was_called(1);
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280 assert.equal("fail", result);
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281 end);
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parents:
diff changeset
282 end);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
283 describe("catch()", function ()
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
284 it("works", function ()
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diff changeset
285 local result;
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parents:
diff changeset
286 local p = promise.new(function (resolve)
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parents:
diff changeset
287 error({ foo = true });
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
288 end);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
289 local cb1 = spy.new(function (v)
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parents:
diff changeset
290 result = v;
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
291 end);
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parents:
diff changeset
292 assert.spy(cb1).was_called(0);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
293 p:catch(cb1);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
294 assert.spy(cb1).was_called(1);
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
295 assert.same({ foo = true }, result);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
296 end);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
297 end);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
298 it("promises may be resolved by other promises", function ()
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
299 local r1, r2;
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parents:
diff changeset
300 local p1, p2 = promise.new(function (resolve) r1 = resolve end), promise.new(function (resolve) r2 = resolve end);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
301
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
302 local result;
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
303 local cb = spy.new(function (v)
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
304 result = v;
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
305 end);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
306 p1:next(cb);
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
307 assert.spy(cb).was_called(0);
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
308
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
309 r1(p2);
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
310 assert.spy(cb).was_called(0);
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
311 r2("yep");
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
312 assert.spy(cb).was_called(1);
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
313 assert.equal("yep", result);
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parents:
diff changeset
314 end);
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
315 describe("reject()", function ()
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
316 it("returns a rejected promise", function ()
d54a0e129af8 util.promise: ES6-like API for promises
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diff changeset
317 local p = promise.reject("foo");
9457
d01cff2f7a26 util.promise tests: Fix luacheck warnings
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parents: 9456
diff changeset
318 local cb = spy.new(function () end);
9510
8ef46d09386a util.promise: Fix promise.reject() to return a rejected promise, and fix buggy test for it
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parents: 9457
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319 p:catch(cb);
9456
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diff changeset
320 assert.spy(cb).was_called(1);
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
321 assert.spy(cb).was_called_with("foo");
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
322 end);
9511
cb88d729e98d util.promise: Add additional test for promise.reject()
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parents: 9510
diff changeset
323 it("returns a rejected promise and does not call on_fulfilled", function ()
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parents: 9510
diff changeset
324 local p = promise.reject("foo");
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parents: 9510
diff changeset
325 local cb = spy.new(function () end);
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Matthew Wild <mwild1@gmail.com>
parents: 9510
diff changeset
326 p:next(cb);
cb88d729e98d util.promise: Add additional test for promise.reject()
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parents: 9510
diff changeset
327 assert.spy(cb).was_called(0);
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Matthew Wild <mwild1@gmail.com>
parents: 9510
diff changeset
328 end);
9456
d54a0e129af8 util.promise: ES6-like API for promises
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parents:
diff changeset
329 end);
9514
9db707a86a25 util.promise: Add promise:finally()
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parents: 9511
diff changeset
330 describe("finally()", function ()
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parents: 9511
diff changeset
331 local p, p2, resolve, reject, on_finally;
9db707a86a25 util.promise: Add promise:finally()
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parents: 9511
diff changeset
332 before_each(function ()
9db707a86a25 util.promise: Add promise:finally()
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parents: 9511
diff changeset
333 p = promise.new(function (_resolve, _reject)
9db707a86a25 util.promise: Add promise:finally()
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parents: 9511
diff changeset
334 resolve, reject = _resolve, _reject;
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parents: 9511
diff changeset
335 end);
9db707a86a25 util.promise: Add promise:finally()
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parents: 9511
diff changeset
336 on_finally = spy.new(function () end);
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Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
337 p2 = p:finally(on_finally);
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parents: 9511
diff changeset
338 end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
339 it("runs when a promise is resolved", function ()
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
340 assert.spy(on_finally).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
341 resolve("foo");
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Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
342 assert.spy(on_finally).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
343 assert.spy(on_finally).was_not_called_with("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
344 end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
345 it("runs when a promise is rejected", function ()
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Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
346 assert.spy(on_finally).was_called(0);
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Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
347 reject("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
348 assert.spy(on_finally).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
349 assert.spy(on_finally).was_not_called_with("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
350 end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
351 it("returns a promise that fulfills with the original value", function ()
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
352 local cb2 = spy.new(function () end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
353 p2:next(cb2);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
354 assert.spy(on_finally).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
355 assert.spy(cb2).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
356 resolve("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
357 assert.spy(on_finally).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
358 assert.spy(cb2).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
359 assert.spy(on_finally).was_not_called_with("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
360 assert.spy(cb2).was_called_with("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
361 end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
362 it("returns a promise that rejects with the original error", function ()
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
363 local on_finally_err = spy.new(function () end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
364 local on_finally_ok = spy.new(function () end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
365 p2:catch(on_finally_err);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
366 p2:next(on_finally_ok);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
367 assert.spy(on_finally).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
368 assert.spy(on_finally_err).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
369 reject("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
370 assert.spy(on_finally).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
371 -- Since the original promise was rejected, the finally promise should also be
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
372 assert.spy(on_finally_ok).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
373 assert.spy(on_finally_err).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
374 assert.spy(on_finally).was_not_called_with("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
375 assert.spy(on_finally_err).was_called_with("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
376 end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
377 it("returns a promise that rejects with an uncaught error inside on_finally", function ()
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
378 p = promise.new(function (_resolve, _reject)
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
379 resolve, reject = _resolve, _reject;
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
380 end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
381 local test_error = {};
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
382 on_finally = spy.new(function () error(test_error) end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
383 p2 = p:finally(on_finally);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
384
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
385 local on_finally_err = spy.new(function () end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
386 p2:catch(on_finally_err);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
387 assert.spy(on_finally).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
388 assert.spy(on_finally_err).was_called(0);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
389 reject("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
390 assert.spy(on_finally).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
391 assert.spy(on_finally_err).was_called(1);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
392 assert.spy(on_finally).was_not_called_with("foo");
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
393 assert.spy(on_finally).was_not_called_with(test_error);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
394 assert.spy(on_finally_err).was_called_with(test_error);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
395 end);
9db707a86a25 util.promise: Add promise:finally()
Matthew Wild <mwild1@gmail.com>
parents: 9511
diff changeset
396 end);
9517
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
397 describe("try()", function ()
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
398 it("works with functions that return a promise", function ()
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
399 local resolve;
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
400 local p = promise.try(function ()
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
401 return promise.new(function (_resolve)
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
402 resolve = _resolve;
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
403 end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
404 end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
405 assert.is_function(resolve);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
406 local on_resolved = spy.new(function () end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
407 p:next(on_resolved);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
408 assert.spy(on_resolved).was_not_called();
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
409 resolve("foo");
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
410 assert.spy(on_resolved).was_called_with("foo");
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
411 end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
412
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
413 it("works with functions that return a value", function ()
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
414 local p = promise.try(function ()
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
415 return "foo";
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
416 end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
417 local on_resolved = spy.new(function () end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
418 p:next(on_resolved);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
419 assert.spy(on_resolved).was_called_with("foo");
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
420 end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
421
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
422 it("works with functions that return a promise that rejects", function ()
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
423 local reject;
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
diff changeset
424 local p = promise.try(function ()
b1c6ede17592 util.promise: Add promise.try()
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425 return promise.new(function (_, _reject)
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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426 reject = _reject;
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
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427 end);
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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428 end);
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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429 assert.is_function(reject);
b1c6ede17592 util.promise: Add promise.try()
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430 local on_rejected = spy.new(function () end);
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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431 p:catch(on_rejected);
b1c6ede17592 util.promise: Add promise.try()
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432 assert.spy(on_rejected).was_not_called();
b1c6ede17592 util.promise: Add promise.try()
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433 reject("foo");
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434 assert.spy(on_rejected).was_called_with("foo");
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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435 end);
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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436
b1c6ede17592 util.promise: Add promise.try()
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437 it("works with functions that throw errors", function ()
b1c6ede17592 util.promise: Add promise.try()
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438 local test_error = {};
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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439 local p = promise.try(function ()
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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440 error(test_error);
b1c6ede17592 util.promise: Add promise.try()
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441 end);
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parents: 9514
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442 local on_rejected = spy.new(function () end);
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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443 p:catch(on_rejected);
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444 assert.spy(on_rejected).was_called(1);
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445 assert.spy(on_rejected).was_called_with(test_error);
b1c6ede17592 util.promise: Add promise.try()
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parents: 9514
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446 end);
b1c6ede17592 util.promise: Add promise.try()
Matthew Wild <mwild1@gmail.com>
parents: 9514
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447 end);
9456
d54a0e129af8 util.promise: ES6-like API for promises
Matthew Wild <mwild1@gmail.com>
parents:
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448 end);