Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/algorithms/components/tests/test_attracting.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 import pytest |
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2 import networkx as nx |
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3 from networkx import NetworkXNotImplemented |
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4 |
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5 |
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6 class TestAttractingComponents: |
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7 @classmethod |
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8 def setup_class(cls): |
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9 cls.G1 = nx.DiGraph() |
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10 cls.G1.add_edges_from( |
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11 [ |
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12 (5, 11), |
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13 (11, 2), |
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14 (11, 9), |
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15 (11, 10), |
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16 (7, 11), |
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17 (7, 8), |
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18 (8, 9), |
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19 (3, 8), |
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20 (3, 10), |
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21 ] |
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22 ) |
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23 cls.G2 = nx.DiGraph() |
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24 cls.G2.add_edges_from([(0, 1), (0, 2), (1, 1), (1, 2), (2, 1)]) |
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25 |
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26 cls.G3 = nx.DiGraph() |
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27 cls.G3.add_edges_from([(0, 1), (1, 2), (2, 1), (0, 3), (3, 4), (4, 3)]) |
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28 |
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29 cls.G4 = nx.DiGraph() |
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30 |
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31 def test_attracting_components(self): |
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32 ac = list(nx.attracting_components(self.G1)) |
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33 assert {2} in ac |
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34 assert {9} in ac |
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35 assert {10} in ac |
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36 |
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37 ac = list(nx.attracting_components(self.G2)) |
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38 ac = [tuple(sorted(x)) for x in ac] |
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39 assert ac == [(1, 2)] |
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40 |
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41 ac = list(nx.attracting_components(self.G3)) |
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42 ac = [tuple(sorted(x)) for x in ac] |
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43 assert (1, 2) in ac |
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44 assert (3, 4) in ac |
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45 assert len(ac) == 2 |
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46 |
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47 ac = list(nx.attracting_components(self.G4)) |
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48 assert ac == [] |
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49 |
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50 def test_number_attacting_components(self): |
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51 assert nx.number_attracting_components(self.G1) == 3 |
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52 assert nx.number_attracting_components(self.G2) == 1 |
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53 assert nx.number_attracting_components(self.G3) == 2 |
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54 assert nx.number_attracting_components(self.G4) == 0 |
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55 |
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56 def test_is_attracting_component(self): |
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57 assert not nx.is_attracting_component(self.G1) |
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58 assert not nx.is_attracting_component(self.G2) |
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59 assert not nx.is_attracting_component(self.G3) |
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60 g2 = self.G3.subgraph([1, 2]) |
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61 assert nx.is_attracting_component(g2) |
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62 assert not nx.is_attracting_component(self.G4) |
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63 |
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64 def test_connected_raise(self): |
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65 G = nx.Graph() |
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66 pytest.raises(NetworkXNotImplemented, nx.attracting_components, G) |
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67 pytest.raises(NetworkXNotImplemented, nx.number_attracting_components, G) |
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68 pytest.raises(NetworkXNotImplemented, nx.is_attracting_component, G) |