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annotate web/graph_test.coffee @ 2376:4556eebe5d73

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topdir reorgs; let pdm have its src/ dir; separate vite area from light9/
author drewp@bigasterisk.com
date Sun, 12 May 2024 19:02:10 -0700
parents light9/web/graph_test.coffee@3c997bc6d380
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 log = console.log
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2 assert = require('chai').assert
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3 expect = require('chai').expect
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4 SyncedGraph = require('./graph.js').SyncedGraph
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5
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6 describe 'SyncedGraph', ->
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7 describe 'constructor', ->
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8 it 'should successfully make an empty graph without connecting to rdfdb', ->
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9 g = new SyncedGraph()
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10 g.quads()
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11 assert.equal(g.quads().length, 0)
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12
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13 describe 'auto dependencies', ->
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14 graph = new SyncedGraph()
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15 RDF = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'
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16 U = (tail) -> graph.Uri('http://example.com/' + tail)
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17 A1 = U('a1')
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18 A2 = U('a2')
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19 A3 = U('a3')
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20 A4 = U('a4')
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21 ctx = U('ctx')
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22 quad = (s, p, o) -> graph.Quad(s, p, o, ctx)
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23
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24 beforeEach (done) ->
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25 graph = new SyncedGraph()
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26 graph.loadTrig("
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27 @prefix : <http://example.com/> .
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28 :ctx {
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29 :a1 :a2 :a3 .
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30 :a1 :someFloat 1.5 .
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31 :a1 :someString \"hello\" .
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32 :a1 :multipleObjects :a4, :a5 .
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33 :a2 a :Type1 .
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34 :a3 a :Type1 .
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35 }
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36 ", done)
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37
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38 it 'calls a handler right away', ->
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39 called = 0
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40 hand = ->
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41 called++
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42 graph.runHandler(hand, 'run')
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43 assert.equal(1, called)
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44
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45 it 'calls a handler a 2nd time if the graph is patched with relevant data', ->
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46 called = 0
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47 hand = ->
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48 called++
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49 graph.uriValue(A1, A2)
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50 graph.runHandler(hand, 'run')
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51 graph.applyAndSendPatch({
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52 delQuads: [quad(A1, A2, A3)], addQuads: [quad(A1, A2, A4)]})
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53 assert.equal(2, called)
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54
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55 it 'notices new queries a handler makes upon rerun', ->
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56 called = 0
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57 objsFound = []
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58 hand = ->
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59 called++
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60 graph.uriValue(A1, A2)
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61 if called > 1
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62 objsFound.push(graph.objects(A1, A3))
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63 graph.runHandler(hand, 'run')
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64 # first run looked up A1,A2,*
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65 graph.applyAndSendPatch({
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66 delQuads: [quad(A1, A2, A3)], addQuads: [quad(A1, A2, A4)]})
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67 # second run also looked up A1,A3,* (which matched none)
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68 graph.applyAndSendPatch({
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69 delQuads: [], addQuads: [quad(A1, A3, A4)]})
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70 # third run should happen here, noticing the new A1,A3,* match
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71 assert.equal(3, called)
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72 assert.deepEqual([[], [A4]], objsFound)
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73
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74 it 'calls a handler again even if the handler throws an error', ->
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75 called = 0
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76 hand = ->
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77 called++
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78 graph.uriValue(A1, A2)
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79 throw new Error('this test handler throws an error')
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80 graph.runHandler(hand, 'run')
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81 graph.applyAndSendPatch({
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82 delQuads: [quad(A1, A2, A3)], addQuads: [quad(A1, A2, A4)]})
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83 assert.equal(2, called)
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84
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85 describe 'works with nested handlers', ->
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86
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87 innerResults = []
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88 inner = ->
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89 console.log('\nninnerfetch')
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90 innerResults.push(graph.uriValue(A1, A2))
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91 console.log("innerResults #{JSON.stringify(innerResults)}\n")
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92
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93 outerResults = []
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94 doRunInner = true
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95 outer = ->
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96 if doRunInner
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97 graph.runHandler(inner, 'runinner')
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98 console.log('push outer')
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99 outerResults.push(graph.floatValue(A1, U('someFloat')))
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100
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101 beforeEach ->
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102 innerResults = []
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103 outerResults = []
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104 doRunInner = true
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105
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106 affectInner = {
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107 delQuads: [quad(A1, A2, A3)], addQuads: [quad(A1, A2, A4)]
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108 }
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109 affectOuter = {
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110 delQuads: [
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111 quad(A1, U('someFloat'), graph.Literal(1.5))
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112 ], addQuads: [
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113 quad(A1, U('someFloat'), graph.LiteralRoundedFloat(2))
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114 ]}
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115 affectBoth = {
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116 delQuads: affectInner.delQuads.concat(affectOuter.delQuads),
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117 addQuads: affectInner.addQuads.concat(affectOuter.addQuads)
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118 }
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119
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120 it 'calls everything normally once', ->
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121 graph.runHandler(outer, 'run')
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122 assert.deepEqual([A3], innerResults)
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123 assert.deepEqual([1.5], outerResults)
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124
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125 it.skip '[performance] reruns just the inner if its dependencies change', ->
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126 console.log(graph.quads())
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127 graph.runHandler(outer, 'run')
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128 graph.applyAndSendPatch(affectInner)
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129 assert.deepEqual([A3, A4], innerResults)
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130 assert.deepEqual([1.5], outerResults)
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131
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132 it.skip '[performance] reruns the outer (and therefore inner) if its dependencies change', ->
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133 graph.runHandler(outer, 'run')
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134 graph.applyAndSendPatch(affectOuter)
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135 assert.deepEqual([A3, A3], innerResults)
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136 assert.deepEqual([1.5, 2], outerResults)
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137
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138
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139 it.skip '[performance] does not send a redundant inner run if it is already rerunning outer', ->
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140 # Note that outer may or may not call inner each time, and we
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141 # don't want to redundantly call inner. We need to:
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142 # 1. build the set of handlers to rerun,
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143 # 2. call them from outside-in, and
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144 # 3. any runHandler calls that happen, they need to count as reruns.
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145 graph.runHandler(outer, 'run')
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146 graph.applyAndSendPatch(affectBoth)
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147 assert.deepEqual([A3, A4], innerResults)
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148 assert.deepEqual([1.5, 2], outerResults)
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149
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150 it 'reruns the outer and the inner if all dependencies change, but outer omits calling inner this time', ->
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151 graph.runHandler(outer, 'run')
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152 doRunInner = false
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153 graph.applyAndSendPatch(affectBoth)
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154 assert.deepEqual([A3, A4], innerResults)
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155 assert.deepEqual([1.5, 2], outerResults)
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156
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157 describe 'watches calls to:', ->
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158 it 'floatValue', ->
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159 values = []
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160 hand = -> values.push(graph.floatValue(A1, U('someFloat')))
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161 graph.runHandler(hand, 'run')
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162 graph.patchObject(A1, U('someFloat'), graph.LiteralRoundedFloat(2), ctx)
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163 assert.deepEqual([1.5, 2.0], values)
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164
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165 it 'stringValue', ->
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166 values = []
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167 hand = -> values.push(graph.stringValue(A1, U('someString')))
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168 graph.runHandler(hand, 'run')
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169 graph.patchObject(A1, U('someString'), graph.Literal('world'), ctx)
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170 assert.deepEqual(['hello', 'world'], values)
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171
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172 it 'uriValue', ->
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173 # covered above, but this one tests patchObject on a uri, too
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174 values = []
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175 hand = -> values.push(graph.uriValue(A1, A2))
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176 graph.runHandler(hand, 'run')
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177 graph.patchObject(A1, A2, A4, ctx)
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178 assert.deepEqual([A3, A4], values)
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179
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180 it 'objects', ->
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181 values = []
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182 hand = -> values.push(graph.objects(A1, U('multipleObjects')))
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183 graph.runHandler(hand, 'run')
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184 graph.patchObject(A1, U('multipleObjects'), U('newOne'), ctx)
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185 expect(values[0]).to.deep.have.members([U('a4'), U('a5')])
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186 expect(values[1]).to.deep.have.members([U('newOne')])
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187
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188 it 'subjects', ->
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189 values = []
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190 rdfType = graph.Uri(RDF + 'type')
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191 hand = -> values.push(graph.subjects(rdfType, U('Type1')))
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192 graph.runHandler(hand, 'run')
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193 graph.applyAndSendPatch(
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194 {delQuads: [], addQuads: [quad(A4, rdfType, U('Type1'))]})
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195 expect(values[0]).to.deep.have.members([A2, A3])
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196 expect(values[1]).to.deep.have.members([A2, A3, A4])
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197
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198 describe 'items', ->
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199 it 'when the list order changes', (done) ->
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200 values = []
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201 successes = 0
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202 hand = ->
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203 try
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204 head = graph.uriValue(U('x'), U('y'))
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205 catch
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206 # graph goes empty between clearGraph and loadTrig
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207 return
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208 values.push(graph.items(head))
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209 successes++
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210 graph.clearGraph()
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211 graph.loadTrig "
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212 @prefix : <http://example.com/> .
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213 :ctx { :x :y (:a1 :a2 :a3) } .
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214 ", () ->
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215 graph.runHandler(hand, 'run')
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216 graph.clearGraph()
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217 graph.loadTrig "
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218 @prefix : <http://example.com/> .
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219 :ctx { :x :y (:a1 :a3 :a2) } .
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220 ", () ->
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221 assert.deepEqual([[A1, A2, A3], [A1, A3, A2]], values)
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222 assert.equal(2, successes)
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223 done()
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224
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225 describe 'contains', ->
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226 it 'when a new triple is added', ->
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227 values = []
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228 hand = -> values.push(graph.contains(A1, A1, A1))
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229 graph.runHandler(hand, 'run')
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230 graph.applyAndSendPatch(
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231 {delQuads: [], addQuads: [quad(A1, A1, A1)]})
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232 assert.deepEqual([false, true], values)
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233
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234 it 'when a relevant triple is removed', ->
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235 values = []
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236 hand = -> values.push(graph.contains(A1, A2, A3))
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237 graph.runHandler(hand, 'run')
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238 graph.applyAndSendPatch(
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239 {delQuads: [quad(A1, A2, A3)], addQuads: []})
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240 assert.deepEqual([true, false], values)
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241
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242 describe 'performs well', ->
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243 it "[performance] doesn't call handler a 2nd time if the graph gets an unrelated patch", ->
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244 called = 0
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245 hand = ->
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246 called++
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247 graph.uriValue(A1, A2)
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248 graph.runHandler(hand, 'run')
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249 graph.applyAndSendPatch({
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250 delQuads: [], addQuads: [quad(A2, A3, A4)]})
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251 assert.equal(1, called)
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252
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253 it.skip '[performance] calls a handler 2x but then not again if the handler stopped caring about the data', ->
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254 assert.fail()
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255
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256 it.skip "[performance] doesn't get slow if the handler makes tons of repetitive lookups", ->
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257 assert.fail()