Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/drawing/tests/test_agraph.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """Unit tests for PyGraphviz interface.""" |
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2 import os |
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3 import tempfile |
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4 import pytest |
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5 |
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6 pygraphviz = pytest.importorskip("pygraphviz") |
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7 |
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8 |
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9 from networkx.testing import assert_edges_equal, assert_nodes_equal, assert_graphs_equal |
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10 |
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11 import networkx as nx |
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12 |
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13 |
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14 class TestAGraph: |
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15 def build_graph(self, G): |
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16 edges = [("A", "B"), ("A", "C"), ("A", "C"), ("B", "C"), ("A", "D")] |
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17 G.add_edges_from(edges) |
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18 G.add_node("E") |
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19 G.graph["metal"] = "bronze" |
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20 return G |
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21 |
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22 def assert_equal(self, G1, G2): |
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23 assert_nodes_equal(G1.nodes(), G2.nodes()) |
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24 assert_edges_equal(G1.edges(), G2.edges()) |
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25 assert G1.graph["metal"] == G2.graph["metal"] |
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26 |
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27 def agraph_checks(self, G): |
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28 G = self.build_graph(G) |
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29 A = nx.nx_agraph.to_agraph(G) |
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30 H = nx.nx_agraph.from_agraph(A) |
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31 self.assert_equal(G, H) |
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32 |
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33 fname = tempfile.mktemp() |
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34 nx.drawing.nx_agraph.write_dot(H, fname) |
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35 Hin = nx.nx_agraph.read_dot(fname) |
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36 os.unlink(fname) |
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37 self.assert_equal(H, Hin) |
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38 |
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39 (fd, fname) = tempfile.mkstemp() |
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40 with open(fname, "w") as fh: |
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41 nx.drawing.nx_agraph.write_dot(H, fh) |
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42 |
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43 with open(fname) as fh: |
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44 Hin = nx.nx_agraph.read_dot(fh) |
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45 os.unlink(fname) |
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46 self.assert_equal(H, Hin) |
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47 |
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48 def test_from_agraph_name(self): |
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49 G = nx.Graph(name="test") |
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50 A = nx.nx_agraph.to_agraph(G) |
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51 H = nx.nx_agraph.from_agraph(A) |
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52 assert G.name == "test" |
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53 |
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54 @pytest.mark.parametrize( |
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55 "graph_class", (nx.Graph, nx.DiGraph, nx.MultiGraph, nx.MultiDiGraph) |
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56 ) |
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57 def test_from_agraph_create_using(self, graph_class): |
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58 G = nx.path_graph(3) |
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59 A = nx.nx_agraph.to_agraph(G) |
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60 H = nx.nx_agraph.from_agraph(A, create_using=graph_class) |
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61 assert isinstance(H, graph_class) |
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62 |
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63 def test_from_agraph_named_edges(self): |
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64 # Create an AGraph from an existing (non-multi) Graph |
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65 G = nx.Graph() |
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66 G.add_nodes_from([0, 1]) |
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67 A = nx.nx_agraph.to_agraph(G) |
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68 # Add edge (+ name, given by key) to the AGraph |
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69 A.add_edge(0, 1, key="foo") |
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70 # Verify a.name roundtrips out to 'key' in from_agraph |
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71 H = nx.nx_agraph.from_agraph(A) |
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72 assert isinstance(H, nx.Graph) |
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73 assert ("0", "1", {"key": "foo"}) in H.edges(data=True) |
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74 |
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75 def test_undirected(self): |
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76 self.agraph_checks(nx.Graph()) |
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77 |
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78 def test_directed(self): |
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79 self.agraph_checks(nx.DiGraph()) |
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80 |
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81 def test_multi_undirected(self): |
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82 self.agraph_checks(nx.MultiGraph()) |
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83 |
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84 def test_multi_directed(self): |
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85 self.agraph_checks(nx.MultiDiGraph()) |
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86 |
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87 def test_to_agraph_with_nodedata(self): |
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88 G = nx.Graph() |
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89 G.add_node(1, color="red") |
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90 A = nx.nx_agraph.to_agraph(G) |
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91 assert dict(A.nodes()[0].attr) == {"color": "red"} |
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92 |
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93 @pytest.mark.parametrize("graph_class", (nx.Graph, nx.MultiGraph)) |
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94 def test_to_agraph_with_edgedata(self, graph_class): |
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95 G = graph_class() |
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96 G.add_nodes_from([0, 1]) |
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97 G.add_edge(0, 1, color="yellow") |
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98 A = nx.nx_agraph.to_agraph(G) |
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99 assert dict(A.edges()[0].attr) == {"color": "yellow"} |
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100 |
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101 def test_view_pygraphviz_path(self, tmp_path): |
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102 G = nx.complete_graph(3) |
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103 input_path = str(tmp_path / "graph.png") |
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104 out_path, A = nx.nx_agraph.view_pygraphviz(G, path=input_path, show=False) |
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105 assert out_path == input_path |
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106 # Ensure file is not empty |
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107 with open(input_path, "rb") as fh: |
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108 data = fh.read() |
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109 assert len(data) > 0 |
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110 |
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111 def test_view_pygraphviz_file_suffix(self, tmp_path): |
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112 G = nx.complete_graph(3) |
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113 path, A = nx.nx_agraph.view_pygraphviz(G, suffix=1, show=False) |
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114 assert path[-6:] == "_1.png" |
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115 |
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116 def test_view_pygraphviz(self): |
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117 G = nx.Graph() # "An empty graph cannot be drawn." |
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118 pytest.raises(nx.NetworkXException, nx.nx_agraph.view_pygraphviz, G) |
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119 G = nx.barbell_graph(4, 6) |
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120 nx.nx_agraph.view_pygraphviz(G, show=False) |
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121 |
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122 def test_view_pygraphviz_edgelabel(self): |
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123 G = nx.Graph() |
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124 G.add_edge(1, 2, weight=7) |
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125 G.add_edge(2, 3, weight=8) |
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126 path, A = nx.nx_agraph.view_pygraphviz(G, edgelabel="weight", show=False) |
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127 for edge in A.edges(): |
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128 assert edge.attr["weight"] in ("7", "8") |
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129 |
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130 def test_view_pygraphviz_callable_edgelabel(self): |
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131 G = nx.complete_graph(3) |
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132 |
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133 def foo_label(data): |
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134 return "foo" |
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135 |
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136 path, A = nx.nx_agraph.view_pygraphviz(G, edgelabel=foo_label, show=False) |
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137 for edge in A.edges(): |
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138 assert edge.attr["label"] == "foo" |
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139 |
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140 def test_view_pygraphviz_multigraph_edgelabels(self): |
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141 G = nx.MultiGraph() |
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142 G.add_edge(0, 1, key=0, name="left_fork") |
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143 G.add_edge(0, 1, key=1, name="right_fork") |
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144 path, A = nx.nx_agraph.view_pygraphviz(G, edgelabel="name", show=False) |
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145 edges = A.edges() |
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146 assert len(edges) == 2 |
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147 for edge in edges: |
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148 assert edge.attr["label"].strip() in ("left_fork", "right_fork") |
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149 |
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150 def test_graph_with_reserved_keywords(self): |
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151 # test attribute/keyword clash case for #1582 |
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152 # node: n |
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153 # edges: u,v |
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154 G = nx.Graph() |
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155 G = self.build_graph(G) |
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156 G.nodes["E"]["n"] = "keyword" |
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157 G.edges[("A", "B")]["u"] = "keyword" |
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158 G.edges[("A", "B")]["v"] = "keyword" |
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159 A = nx.nx_agraph.to_agraph(G) |
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160 |
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161 def test_view_pygraphviz_no_added_attrs_to_input(self): |
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162 G = nx.complete_graph(2) |
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163 path, A = nx.nx_agraph.view_pygraphviz(G, show=False) |
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164 assert G.graph == {} |
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165 |
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166 @pytest.mark.xfail(reason="known bug in clean_attrs") |
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167 def test_view_pygraphviz_leaves_input_graph_unmodified(self): |
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168 G = nx.complete_graph(2) |
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169 # Add entries to graph dict that to_agraph handles specially |
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170 G.graph["node"] = {"width": "0.80"} |
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171 G.graph["edge"] = {"fontsize": "14"} |
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172 path, A = nx.nx_agraph.view_pygraphviz(G, show=False) |
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173 assert G.graph == {"node": {"width": "0.80"}, "edge": {"fontsize": "14"}} |
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174 |
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175 def test_graph_with_AGraph_attrs(self): |
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176 G = nx.complete_graph(2) |
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177 # Add entries to graph dict that to_agraph handles specially |
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178 G.graph["node"] = {"width": "0.80"} |
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179 G.graph["edge"] = {"fontsize": "14"} |
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180 path, A = nx.nx_agraph.view_pygraphviz(G, show=False) |
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181 # Ensure user-specified values are not lost |
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182 assert dict(A.node_attr)["width"] == "0.80" |
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183 assert dict(A.edge_attr)["fontsize"] == "14" |
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184 |
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185 def test_round_trip_empty_graph(self): |
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186 G = nx.Graph() |
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187 A = nx.nx_agraph.to_agraph(G) |
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188 H = nx.nx_agraph.from_agraph(A) |
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189 # assert_graphs_equal(G, H) |
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190 AA = nx.nx_agraph.to_agraph(H) |
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191 HH = nx.nx_agraph.from_agraph(AA) |
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192 assert_graphs_equal(H, HH) |
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193 G.graph["graph"] = {} |
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194 G.graph["node"] = {} |
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195 G.graph["edge"] = {} |
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196 assert_graphs_equal(G, HH) |
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197 |
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198 @pytest.mark.xfail(reason="integer->string node conversion in round trip") |
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199 def test_round_trip_integer_nodes(self): |
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200 G = nx.complete_graph(3) |
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201 A = nx.nx_agraph.to_agraph(G) |
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202 H = nx.nx_agraph.from_agraph(A) |
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203 assert_graphs_equal(G, H) |
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204 |
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205 def test_graphviz_alias(self): |
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206 G = self.build_graph(nx.Graph()) |
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207 pos_graphviz = nx.nx_agraph.graphviz_layout(G) |
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208 pos_pygraphviz = nx.nx_agraph.pygraphviz_layout(G) |
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209 assert pos_graphviz == pos_pygraphviz |
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210 |
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211 @pytest.mark.parametrize("root", range(5)) |
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212 def test_pygraphviz_layout_root(self, root): |
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213 # NOTE: test depends on layout prog being deterministic |
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214 G = nx.complete_graph(5) |
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215 A = nx.nx_agraph.to_agraph(G) |
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216 # Get layout with root arg is not None |
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217 pygv_layout = nx.nx_agraph.pygraphviz_layout(G, prog="circo", root=root) |
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218 # Equivalent layout directly on AGraph |
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219 A.layout(args=f"-Groot={root}", prog="circo") |
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220 # Parse AGraph layout |
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221 a1_pos = tuple(float(v) for v in dict(A.get_node("1").attr)["pos"].split(",")) |
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222 assert pygv_layout[1] == a1_pos |
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223 |
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224 def test_2d_layout(self): |
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225 G = nx.Graph() |
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226 G = self.build_graph(G) |
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227 G.graph["dimen"] = 2 |
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228 pos = nx.nx_agraph.pygraphviz_layout(G, prog="neato") |
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229 pos = list(pos.values()) |
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230 assert len(pos) == 5 |
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231 assert len(pos[0]) == 2 |
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232 |
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233 def test_3d_layout(self): |
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234 G = nx.Graph() |
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235 G = self.build_graph(G) |
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236 G.graph["dimen"] = 3 |
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237 pos = nx.nx_agraph.pygraphviz_layout(G, prog="neato") |
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238 pos = list(pos.values()) |
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239 assert len(pos) == 5 |
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240 assert len(pos[0]) == 3 |
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241 |
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242 def test_display_pygraphviz_deprecation_warning(self): |
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243 G = nx.complete_graph(2) |
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244 path_name, A = nx.nx_agraph.view_pygraphviz(G, show=False) |
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245 # Monkeypatch default_opener to prevent window opening |
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246 nx.utils.default_opener = lambda x: None |
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247 with pytest.warns(DeprecationWarning, match="display_pygraphviz is deprecated"): |
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248 with open(path_name, "wb") as fh: |
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249 nx.nx_agraph.display_pygraphviz(A, fh, prog="dot") |