Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/readwrite/tests/test_pajek.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 Pajek tests |
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3 """ |
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4 import networkx as nx |
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5 import os |
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6 import tempfile |
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7 from networkx.testing import assert_edges_equal, assert_nodes_equal |
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8 |
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9 |
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10 class TestPajek: |
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11 @classmethod |
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12 def setup_class(cls): |
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13 cls.data = """*network Tralala\n*vertices 4\n 1 "A1" 0.0938 0.0896 ellipse x_fact 1 y_fact 1\n 2 "Bb" 0.8188 0.2458 ellipse x_fact 1 y_fact 1\n 3 "C" 0.3688 0.7792 ellipse x_fact 1\n 4 "D2" 0.9583 0.8563 ellipse x_fact 1\n*arcs\n1 1 1 h2 0 w 3 c Blue s 3 a1 -130 k1 0.6 a2 -130 k2 0.6 ap 0.5 l "Bezier loop" lc BlueViolet fos 20 lr 58 lp 0.3 la 360\n2 1 1 h2 0 a1 120 k1 1.3 a2 -120 k2 0.3 ap 25 l "Bezier arc" lphi 270 la 180 lr 19 lp 0.5\n1 2 1 h2 0 a1 40 k1 2.8 a2 30 k2 0.8 ap 25 l "Bezier arc" lphi 90 la 0 lp 0.65\n4 2 -1 h2 0 w 1 k1 -2 k2 250 ap 25 l "Circular arc" c Red lc OrangeRed\n3 4 1 p Dashed h2 0 w 2 c OliveGreen ap 25 l "Straight arc" lc PineGreen\n1 3 1 p Dashed h2 0 w 5 k1 -1 k2 -20 ap 25 l "Oval arc" c Brown lc Black\n3 3 -1 h1 6 w 1 h2 12 k1 -2 k2 -15 ap 0.5 l "Circular loop" c Red lc OrangeRed lphi 270 la 180""" |
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14 cls.G = nx.MultiDiGraph() |
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15 cls.G.add_nodes_from(["A1", "Bb", "C", "D2"]) |
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16 cls.G.add_edges_from( |
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17 [ |
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18 ("A1", "A1"), |
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19 ("A1", "Bb"), |
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20 ("A1", "C"), |
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21 ("Bb", "A1"), |
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22 ("C", "C"), |
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23 ("C", "D2"), |
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24 ("D2", "Bb"), |
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25 ] |
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26 ) |
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27 |
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28 cls.G.graph["name"] = "Tralala" |
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29 (fd, cls.fname) = tempfile.mkstemp() |
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30 with os.fdopen(fd, "wb") as fh: |
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31 fh.write(cls.data.encode("UTF-8")) |
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32 |
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33 @classmethod |
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34 def teardown_class(cls): |
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35 os.unlink(cls.fname) |
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36 |
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37 def test_parse_pajek_simple(self): |
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38 # Example without node positions or shape |
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39 data = """*Vertices 2\n1 "1"\n2 "2"\n*Edges\n1 2\n2 1""" |
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40 G = nx.parse_pajek(data) |
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41 assert sorted(G.nodes()) == ["1", "2"] |
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42 assert_edges_equal(G.edges(), [("1", "2"), ("1", "2")]) |
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43 |
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44 def test_parse_pajek(self): |
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45 G = nx.parse_pajek(self.data) |
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46 assert sorted(G.nodes()) == ["A1", "Bb", "C", "D2"] |
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47 assert_edges_equal( |
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48 G.edges(), |
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49 [ |
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50 ("A1", "A1"), |
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51 ("A1", "Bb"), |
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52 ("A1", "C"), |
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53 ("Bb", "A1"), |
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54 ("C", "C"), |
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55 ("C", "D2"), |
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56 ("D2", "Bb"), |
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57 ], |
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58 ) |
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59 |
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60 def test_parse_pajet_mat(self): |
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61 data = """*Vertices 3\n1 "one"\n2 "two"\n3 "three"\n*Matrix\n1 1 0\n0 1 0\n0 1 0\n""" |
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62 G = nx.parse_pajek(data) |
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63 assert set(G.nodes()) == {"one", "two", "three"} |
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64 assert G.nodes["two"] == {"id": "2"} |
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65 assert_edges_equal( |
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66 set(G.edges()), |
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67 {("one", "one"), ("two", "one"), ("two", "two"), ("two", "three")}, |
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68 ) |
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69 |
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70 def test_read_pajek(self): |
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71 G = nx.parse_pajek(self.data) |
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72 Gin = nx.read_pajek(self.fname) |
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73 assert sorted(G.nodes()) == sorted(Gin.nodes()) |
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74 assert_edges_equal(G.edges(), Gin.edges()) |
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75 assert self.G.graph == Gin.graph |
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76 for n in G: |
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77 assert G.nodes[n] == Gin.nodes[n] |
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78 |
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79 def test_write_pajek(self): |
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80 import io |
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81 |
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82 G = nx.parse_pajek(self.data) |
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83 fh = io.BytesIO() |
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84 nx.write_pajek(G, fh) |
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85 fh.seek(0) |
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86 H = nx.read_pajek(fh) |
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87 assert_nodes_equal(list(G), list(H)) |
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88 assert_edges_equal(list(G.edges()), list(H.edges())) |
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89 # Graph name is left out for now, therefore it is not tested. |
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90 # assert_equal(G.graph, H.graph) |
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91 |
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92 def test_ignored_attribute(self): |
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93 import io |
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94 |
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95 G = nx.Graph() |
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96 fh = io.BytesIO() |
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97 G.add_node(1, int_attr=1) |
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98 G.add_node(2, empty_attr=" ") |
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99 G.add_edge(1, 2, int_attr=2) |
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100 G.add_edge(2, 3, empty_attr=" ") |
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101 |
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102 import warnings |
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103 |
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104 with warnings.catch_warnings(record=True) as w: |
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105 nx.write_pajek(G, fh) |
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106 assert len(w) == 4 |
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107 |
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108 def test_noname(self): |
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109 # Make sure we can parse a line such as: *network |
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110 # Issue #952 |
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111 line = "*network\n" |
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112 other_lines = self.data.split("\n")[1:] |
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113 data = line + "\n".join(other_lines) |
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114 G = nx.parse_pajek(data) |
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115 |
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116 def test_unicode(self): |
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117 import io |
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118 |
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119 G = nx.Graph() |
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120 name1 = chr(2344) + chr(123) + chr(6543) |
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121 name2 = chr(5543) + chr(1543) + chr(324) |
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122 G.add_edge(name1, "Radiohead", foo=name2) |
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123 fh = io.BytesIO() |
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124 nx.write_pajek(G, fh) |
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125 fh.seek(0) |
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126 H = nx.read_pajek(fh) |
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127 assert_nodes_equal(list(G), list(H)) |
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128 assert_edges_equal(list(G.edges()), list(H.edges())) |
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129 assert G.graph == H.graph |