class test_DatIO(unittest.TestCase):
def setUp(self):
self.test_file = test_file = pysal.examples.get_path('wmat.dat')
self.obj = DatIO(test_file, 'r')
def test_close(self):
f = self.obj
f.close()
self.failUnlessRaises(ValueError, f.read)
def test_read(self):
w = self.obj.read()
self.assertEqual(49, w.n)
self.assertEqual(4.7346938775510203, w.mean_neighbors)
self.assertEqual([0.5, 0.5], w[5.0].values())
def test_seek(self):
self.test_read()
self.failUnlessRaises(StopIteration, self.obj.read)
self.obj.seek(0)
self.test_read()
def test_write(self):
w = self.obj.read()
f = tempfile.NamedTemporaryFile(
suffix='.dat', dir=pysal.examples.get_path(''))
fname = f.name
f.close()
o = pysal.open(fname, 'w')
o.write(w)
o.close()
wnew = pysal.open(fname, 'r').read()
self.assertEqual(wnew.pct_nonzero, w.pct_nonzero)
os.remove(fname)
def setUp(self):
self.test_file = test_file = pysal.examples.get_path('wmat.dat')
self.obj = DatIO(test_file, 'r')
