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annotate service/mqtt_to_rdf/inference_test.py @ 1593:b0df43d5494c

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big rewrite- more classes, smaller methods, more typesafe, all current tests passing
author drewp@bigasterisk.com
date Sat, 04 Sep 2021 23:23:55 -0700
parents 327202020892
children e58bcfa66093
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1 """
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2 also see https://github.com/w3c/N3/tree/master/tests/N3Tests
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3 """
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4 import unittest
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5 import itertools
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6 from rdflib import ConjunctiveGraph, Namespace, Graph, BNode
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7 from rdflib.parser import StringInputSource
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8
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9 from inference import Inference
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10
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11
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12 def patchSlimReprs():
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13 import rdflib.term
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14
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15 def ur(self):
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16 clsName = "U" if self.__class__ is rdflib.term.URIRef else self.__class__.__name__
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17 return """%s(%s)""" % (clsName, super(rdflib.term.URIRef, self).__repr__())
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18
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19 rdflib.term.URIRef.__repr__ = ur
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20
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21 def br(self):
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22 clsName = "BNode" if self.__class__ is rdflib.term.BNode else self.__class__.__name__
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23 return """%s(%s)""" % (clsName, super(rdflib.term.BNode, self).__repr__())
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24
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25 rdflib.term.BNode.__repr__ = br
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26
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27 def vr(self):
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28 clsName = "V" if self.__class__ is rdflib.term.Variable else self.__class__.__name__
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29 return """%s(%s)""" % (clsName, super(rdflib.term.Variable, self).__repr__())
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30
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31 rdflib.term.Variable.__repr__ = vr
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32
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33
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34 patchSlimReprs()
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35
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36
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37 def patchBnodeCounter():
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38 import rdflib.term
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39 serial = itertools.count()
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40
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41 def n(cls, value=None, _sn_gen='', _prefix='') -> BNode:
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42 if value is None:
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43 value = 'N-%s' % next(serial)
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44 return rdflib.term.Identifier.__new__(cls, value)
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45
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46 rdflib.term.BNode.__new__ = n
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47
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48 import rdflib.plugins.parsers.notation3
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49
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50 def newBlankNode(self, uri=None, why=None):
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51 if uri is None:
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52 self.counter += 1
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53 bn = BNode('f-%s-%s' % (self.number, self.counter))
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54 else:
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55 bn = BNode(uri.split('#').pop().replace('_', 'b'))
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56 return bn
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57
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58 rdflib.plugins.parsers.notation3.Formula.newBlankNode = newBlankNode
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59
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60
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61 patchBnodeCounter()
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62
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63 ROOM = Namespace('http://projects.bigasterisk.com/room/')
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64
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65
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66 def N3(txt: str):
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67 g = ConjunctiveGraph()
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68 prefix = """
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69 @prefix : <http://example.com/> .
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70 @prefix room: <http://projects.bigasterisk.com/room/> .
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71 @prefix math: <http://www.w3.org/2000/10/swap/math#> .
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72 """
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73 g.parse(StringInputSource((prefix + txt).encode('utf8')), format='n3')
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74 return g
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75
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76
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77 def makeInferenceWithRules(n3):
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78 inf = Inference()
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79 inf.setRules(N3(n3))
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80 return inf
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81
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82
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83 class WithGraphEqual(unittest.TestCase):
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84
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85 def assertGraphEqual(self, g: Graph, expected: Graph):
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86 stmts1 = list(g.triples((None, None, None)))
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87 stmts2 = list(expected.triples((None, None, None)))
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88 self.assertCountEqual(stmts1, stmts2)
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89
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90
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91 class TestInferenceWithoutVars(WithGraphEqual):
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92
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93 def testEmitNothing(self):
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94 inf = makeInferenceWithRules("")
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95 implied = inf.infer(N3(":a :b :c ."))
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96 self.assertEqual(len(implied), 0)
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97
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98 def testSimple(self):
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99 inf = makeInferenceWithRules("{ :a :b :c . } => { :a :b :new . } .")
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100 implied = inf.infer(N3(":a :b :c ."))
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101 self.assertGraphEqual(implied, N3(":a :b :new ."))
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102
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103 def testTwoRounds(self):
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104 inf = makeInferenceWithRules("""
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105 { :a :b :c . } => { :a :b :new1 . } .
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106 { :a :b :new1 . } => { :a :b :new2 . } .
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107 """)
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108
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109 implied = inf.infer(N3(":a :b :c ."))
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110 self.assertGraphEqual(implied, N3(":a :b :new1, :new2 ."))
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111
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112
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113 class TestInferenceWithVars(WithGraphEqual):
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114
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115 def testVarInSubject(self):
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116 inf = makeInferenceWithRules("{ ?x :b :c . } => { :new :stmt ?x } .")
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117 implied = inf.infer(N3(":a :b :c ."))
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118 self.assertGraphEqual(implied, N3(":new :stmt :a ."))
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119
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120 def testVarInObject(self):
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121 inf = makeInferenceWithRules("{ :a :b ?x . } => { :new :stmt ?x } .")
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122 implied = inf.infer(N3(":a :b :c ."))
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123 self.assertGraphEqual(implied, N3(":new :stmt :c ."))
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124
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125 def testVarMatchesTwice(self):
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126 inf = makeInferenceWithRules("{ :a :b ?x . } => { :new :stmt ?x } .")
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127 implied = inf.infer(N3(":a :b :c, :d ."))
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128 self.assertGraphEqual(implied, N3(":new :stmt :c, :d ."))
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129
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130 def testTwoRulesApplyIndependently(self):
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131 inf = makeInferenceWithRules("""
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132 { :a :b ?x . } => { :new :stmt ?x . } .
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133 { :d :e ?y . } => { :new :stmt2 ?y . } .
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134 """)
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135 implied = inf.infer(N3(":a :b :c ."))
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136 self.assertGraphEqual(implied, N3("""
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137 :new :stmt :c .
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138 """))
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139 implied = inf.infer(N3(":a :b :c . :d :e :f ."))
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140 self.assertGraphEqual(implied, N3("""
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141 :new :stmt :c .
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142 :new :stmt2 :f .
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143 """))
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144
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145 def testOneRuleActivatesAnother(self):
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146 inf = makeInferenceWithRules("""
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147 { :a :b ?x . } => { :new :stmt ?x . } .
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148 { ?y :stmt ?z . } => { :new :stmt2 ?y . } .
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149 """)
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150 implied = inf.infer(N3(":a :b :c ."))
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151 self.assertGraphEqual(implied, N3("""
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152 :new :stmt :c .
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153 :new :stmt2 :new .
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154 """))
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155
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156 def testVarLinksTwoStatements(self):
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157 inf = makeInferenceWithRules("{ :a :b ?x . :d :e ?x } => { :new :stmt ?x } .")
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158 implied = inf.infer(N3(":a :b :c ."))
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159 self.assertGraphEqual(implied, N3(""))
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160 implied = inf.infer(N3(":a :b :c . :d :e :f ."))
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161 self.assertGraphEqual(implied, N3(""))
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162 implied = inf.infer(N3(":a :b :c . :d :e :c ."))
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163 self.assertGraphEqual(implied, N3(":new :stmt :c ."))
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164
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165 def testRuleMatchesStaticStatement(self):
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166 inf = makeInferenceWithRules("{ :a :b ?x . :a :b :c . } => { :new :stmt ?x } .")
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167 implied = inf.infer(N3(":a :b :c ."))
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168 self.assertGraphEqual(implied, N3(":new :stmt :c ."))
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169
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170
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171 class TestBnodeMatching(WithGraphEqual):
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172
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173 def testRuleBnodeBindsToInputBnode(self):
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174 inf = makeInferenceWithRules("{ [ :a :b ] . } => { :new :stmt :here } .")
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175 implied = inf.infer(N3("[ :a :b ] ."))
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176 self.assertGraphEqual(implied, N3(":new :stmt :here ."))
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177
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178 def testRuleVarBindsToInputBNode(self):
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179 inf = makeInferenceWithRules("{ ?z :a :b . } => { :new :stmt :here } .")
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180 implied = inf.infer(N3("[] :a :b ."))
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181 self.assertGraphEqual(implied, N3(":new :stmt :here ."))
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182
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183
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184 class TestSelfFulfillingRule(WithGraphEqual):
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185
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186 def test1(self):
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187 inf = makeInferenceWithRules("{ } => { :new :stmt :x } .")
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188 self.assertGraphEqual(inf.infer(N3("")), N3(":new :stmt :x ."))
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189 self.assertGraphEqual(inf.infer(N3(":any :any :any .")), N3(":new :stmt :x ."))
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190
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191 def test2(self):
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192 inf = makeInferenceWithRules("{ (2) math:sum ?x } => { :new :stmt ?x } .")
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193 self.assertGraphEqual(inf.infer(N3("")), N3(":new :stmt 2 ."))
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194
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195
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196 class TestInferenceWithMathFunctions(WithGraphEqual):
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197
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198 def testBoolFilter(self):
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199 inf = makeInferenceWithRules("{ :a :b ?x . ?x math:greaterThan 5 } => { :new :stmt ?x } .")
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200 self.assertGraphEqual(inf.infer(N3(":a :b 3 .")), N3(""))
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201 self.assertGraphEqual(inf.infer(N3(":a :b 5 .")), N3(""))
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202 self.assertGraphEqual(inf.infer(N3(":a :b 6 .")), N3(":new :stmt 6 ."))
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203
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204 def testNonFiringMathRule(self):
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205 inf = makeInferenceWithRules("{ :a :b ?x . (?x 1) math:sum ?y } => { :new :stmt ?y } .")
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206 self.assertGraphEqual(inf.infer(N3("")), N3(""))
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207
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208 def testStatementGeneratingRule(self):
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209 inf = makeInferenceWithRules("{ :a :b ?x . (?x 1) math:sum ?y } => { :new :stmt ?y } .")
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210 self.assertGraphEqual(inf.infer(N3(":a :b 3 .")), N3(":new :stmt 4 ."))
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211
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212 def test3Operands(self):
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213 inf = makeInferenceWithRules("{ :a :b ?x . (2 ?x 2) math:sum ?y } => { :new :stmt ?y } .")
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214 self.assertGraphEqual(inf.infer(N3(":a :b 2 .")), N3(":new :stmt 6 ."))
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215
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216
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217 class TestInferenceWithCustomFunctions(WithGraphEqual):
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218
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219 def testAsFarenheit(self):
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220 inf = makeInferenceWithRules("{ :a :b ?x . ?x room:asFarenheit ?f } => { :new :stmt ?f } .")
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221 self.assertGraphEqual(inf.infer(N3(":a :b 12 .")), N3(":new :stmt 53.6 ."))