1 """Unit tests for layout functions.""" 2 import sys 3 from nose import SkipTest 4 from nose.tools import assert_equal 5 import networkx as nx 6 7 class TestLayout(object): 8 numpy=1 # nosetests attribute, use nosetests -a 'not numpy' to skip test 9 @classmethod 10 def setupClass(cls): 11 global numpy 12 try: 13 import numpy 14 except ImportError: 15 raise SkipTest('numpy not available.') 16 17 18 def setUp(self): 19 self.Gi=nx.grid_2d_graph(5,5) 20 self.Gs=nx.Graph() 21 self.Gs.add_path('abcdef') 22 self.bigG=nx.grid_2d_graph(25,25) #bigger than 500 nodes for sparse 23 24 def test_smoke_int(self): 25 G=self.Gi 26 vpos=nx.random_layout(G) 27 vpos=nx.circular_layout(G) 28 vpos=nx.spring_layout(G) 29 vpos=nx.fruchterman_reingold_layout(G) 30 vpos=nx.spectral_layout(G) 31 vpos=nx.spectral_layout(self.bigG) 32 vpos=nx.shell_layout(G) 33 34 def test_smoke_string(self): 35 G=self.Gs 36 vpos=nx.random_layout(G) 37 vpos=nx.circular_layout(G) 38 vpos=nx.spring_layout(G) 39 vpos=nx.fruchterman_reingold_layout(G) 40 vpos=nx.spectral_layout(G) 41 vpos=nx.shell_layout(G) 42 43 44 def test_adjacency_interface_numpy(self): 45 A=nx.to_numpy_matrix(self.Gs) 46 pos=nx.drawing.layout._fruchterman_reingold(A) 47 pos=nx.drawing.layout._fruchterman_reingold(A,dim=3) 48 assert_equal(pos.shape,(6,3)) 49 50 def test_adjacency_interface_scipy(self): 51 try: 52 import scipy 53 except ImportError: 54 raise SkipTest('scipy not available.') 55 56 A=nx.to_scipy_sparse_matrix(self.Gs,dtype='f') 57 pos=nx.drawing.layout._sparse_fruchterman_reingold(A) 58 pos=nx.drawing.layout._sparse_spectral(A) 59 60 pos=nx.drawing.layout._sparse_fruchterman_reingold(A,dim=3) 61 assert_equal(pos.shape,(6,3)) 62
