Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/algorithms/isomorphism/tests/test_vf2userfunc.py @ 0:4f3585e2f14b draft default tip
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author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """ |
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2 Tests for VF2 isomorphism algorithm for weighted graphs. |
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3 """ |
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4 |
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5 from operator import eq |
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6 |
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7 import networkx as nx |
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8 import networkx.algorithms.isomorphism as iso |
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9 |
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10 |
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11 def test_simple(): |
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12 # 16 simple tests |
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13 w = "weight" |
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14 edges = [(0, 0, 1), (0, 0, 1.5), (0, 1, 2), (1, 0, 3)] |
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15 for g1 in [nx.Graph(), nx.DiGraph(), nx.MultiGraph(), nx.MultiDiGraph()]: |
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16 |
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17 g1.add_weighted_edges_from(edges) |
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18 g2 = g1.subgraph(g1.nodes()) |
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19 if g1.is_multigraph(): |
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20 em = iso.numerical_multiedge_match("weight", 1) |
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21 else: |
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22 em = iso.numerical_edge_match("weight", 1) |
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23 assert nx.is_isomorphic(g1, g2, edge_match=em) |
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24 |
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25 for mod1, mod2 in [(False, True), (True, False), (True, True)]: |
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26 # mod1 tests a regular edge |
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27 # mod2 tests a selfloop |
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28 if g2.is_multigraph(): |
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29 if mod1: |
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30 data1 = {0: {"weight": 10}} |
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31 if mod2: |
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32 data2 = {0: {"weight": 1}, 1: {"weight": 2.5}} |
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33 else: |
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34 if mod1: |
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35 data1 = {"weight": 10} |
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36 if mod2: |
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37 data2 = {"weight": 2.5} |
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38 |
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39 g2 = g1.subgraph(g1.nodes()).copy() |
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40 if mod1: |
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41 if not g1.is_directed(): |
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42 g2._adj[1][0] = data1 |
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43 g2._adj[0][1] = data1 |
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44 else: |
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45 g2._succ[1][0] = data1 |
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46 g2._pred[0][1] = data1 |
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47 if mod2: |
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48 if not g1.is_directed(): |
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49 g2._adj[0][0] = data2 |
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50 else: |
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51 g2._succ[0][0] = data2 |
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52 g2._pred[0][0] = data2 |
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53 |
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54 assert not nx.is_isomorphic(g1, g2, edge_match=em) |
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55 |
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56 |
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57 def test_weightkey(): |
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58 g1 = nx.DiGraph() |
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59 g2 = nx.DiGraph() |
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60 |
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61 g1.add_edge("A", "B", weight=1) |
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62 g2.add_edge("C", "D", weight=0) |
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63 |
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64 assert nx.is_isomorphic(g1, g2) |
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65 em = iso.numerical_edge_match("nonexistent attribute", 1) |
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66 assert nx.is_isomorphic(g1, g2, edge_match=em) |
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67 em = iso.numerical_edge_match("weight", 1) |
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68 assert not nx.is_isomorphic(g1, g2, edge_match=em) |
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69 |
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70 g2 = nx.DiGraph() |
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71 g2.add_edge("C", "D") |
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72 assert nx.is_isomorphic(g1, g2, edge_match=em) |
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73 |
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74 |
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75 class TestNodeMatch_Graph: |
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76 def setup_method(self): |
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77 self.g1 = nx.Graph() |
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78 self.g2 = nx.Graph() |
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79 self.build() |
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80 |
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81 def build(self): |
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82 self.nm = iso.categorical_node_match("color", "") |
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83 self.em = iso.numerical_edge_match("weight", 1) |
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84 |
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85 self.g1.add_node("A", color="red") |
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86 self.g2.add_node("C", color="blue") |
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87 |
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88 self.g1.add_edge("A", "B", weight=1) |
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89 self.g2.add_edge("C", "D", weight=1) |
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90 |
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91 def test_noweight_nocolor(self): |
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92 assert nx.is_isomorphic(self.g1, self.g2) |
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93 |
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94 def test_color1(self): |
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95 assert not nx.is_isomorphic(self.g1, self.g2, node_match=self.nm) |
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96 |
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97 def test_color2(self): |
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98 self.g1.nodes["A"]["color"] = "blue" |
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99 assert nx.is_isomorphic(self.g1, self.g2, node_match=self.nm) |
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100 |
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101 def test_weight1(self): |
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102 assert nx.is_isomorphic(self.g1, self.g2, edge_match=self.em) |
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103 |
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104 def test_weight2(self): |
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105 self.g1.add_edge("A", "B", weight=2) |
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106 assert not nx.is_isomorphic(self.g1, self.g2, edge_match=self.em) |
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107 |
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108 def test_colorsandweights1(self): |
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109 iso = nx.is_isomorphic(self.g1, self.g2, node_match=self.nm, edge_match=self.em) |
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110 assert not iso |
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111 |
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112 def test_colorsandweights2(self): |
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113 self.g1.nodes["A"]["color"] = "blue" |
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114 iso = nx.is_isomorphic(self.g1, self.g2, node_match=self.nm, edge_match=self.em) |
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115 assert iso |
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116 |
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117 def test_colorsandweights3(self): |
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118 # make the weights disagree |
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119 self.g1.add_edge("A", "B", weight=2) |
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120 assert not nx.is_isomorphic( |
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121 self.g1, self.g2, node_match=self.nm, edge_match=self.em |
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122 ) |
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123 |
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124 |
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125 class TestEdgeMatch_MultiGraph: |
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126 def setup_method(self): |
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127 self.g1 = nx.MultiGraph() |
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128 self.g2 = nx.MultiGraph() |
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129 self.GM = iso.MultiGraphMatcher |
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130 self.build() |
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131 |
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132 def build(self): |
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133 g1 = self.g1 |
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134 g2 = self.g2 |
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135 |
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136 # We will assume integer weights only. |
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137 g1.add_edge("A", "B", color="green", weight=0, size=0.5) |
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138 g1.add_edge("A", "B", color="red", weight=1, size=0.35) |
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139 g1.add_edge("A", "B", color="red", weight=2, size=0.65) |
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140 |
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141 g2.add_edge("C", "D", color="green", weight=1, size=0.5) |
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142 g2.add_edge("C", "D", color="red", weight=0, size=0.45) |
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143 g2.add_edge("C", "D", color="red", weight=2, size=0.65) |
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144 |
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145 if g1.is_multigraph(): |
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146 self.em = iso.numerical_multiedge_match("weight", 1) |
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147 self.emc = iso.categorical_multiedge_match("color", "") |
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148 self.emcm = iso.categorical_multiedge_match(["color", "weight"], ["", 1]) |
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149 self.emg1 = iso.generic_multiedge_match("color", "red", eq) |
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150 self.emg2 = iso.generic_multiedge_match( |
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151 ["color", "weight", "size"], |
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152 ["red", 1, 0.5], |
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153 [eq, eq, iso.matchhelpers.close], |
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154 ) |
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155 else: |
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156 self.em = iso.numerical_edge_match("weight", 1) |
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157 self.emc = iso.categorical_edge_match("color", "") |
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158 self.emcm = iso.categorical_edge_match(["color", "weight"], ["", 1]) |
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159 self.emg1 = iso.generic_multiedge_match("color", "red", eq) |
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160 self.emg2 = iso.generic_edge_match( |
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161 ["color", "weight", "size"], |
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162 ["red", 1, 0.5], |
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163 [eq, eq, iso.matchhelpers.close], |
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164 ) |
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165 |
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166 def test_weights_only(self): |
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167 assert nx.is_isomorphic(self.g1, self.g2, edge_match=self.em) |
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168 |
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169 def test_colors_only(self): |
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170 gm = self.GM(self.g1, self.g2, edge_match=self.emc) |
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171 assert gm.is_isomorphic() |
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172 |
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173 def test_colorsandweights(self): |
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174 gm = self.GM(self.g1, self.g2, edge_match=self.emcm) |
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175 assert not gm.is_isomorphic() |
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176 |
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177 def test_generic1(self): |
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178 gm = self.GM(self.g1, self.g2, edge_match=self.emg1) |
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179 assert gm.is_isomorphic() |
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180 |
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181 def test_generic2(self): |
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182 gm = self.GM(self.g1, self.g2, edge_match=self.emg2) |
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183 assert not gm.is_isomorphic() |
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184 |
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185 |
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186 class TestEdgeMatch_DiGraph(TestNodeMatch_Graph): |
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187 def setup_method(self): |
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188 TestNodeMatch_Graph.setup_method(self) |
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189 self.g1 = nx.DiGraph() |
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190 self.g2 = nx.DiGraph() |
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191 self.build() |
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192 |
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193 |
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194 class TestEdgeMatch_MultiDiGraph(TestEdgeMatch_MultiGraph): |
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195 def setup_method(self): |
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196 TestEdgeMatch_MultiGraph.setup_method(self) |
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197 self.g1 = nx.MultiDiGraph() |
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198 self.g2 = nx.MultiDiGraph() |
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199 self.GM = iso.MultiDiGraphMatcher |
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200 self.build() |