def test_copy_works(self, adata: AnnData):
ck1 = ConnectivityKernel(adata)
ck2 = ck1.copy()
ck1.compute_transition_matrix()
assert (ck1._transition_matrix is not None
) # calling the property would trigger the calculation
assert ck2._transition_matrix is None
def test_inversion_preservation_of_constants(self, adata: AnnData):
c = ConnectivityKernel(adata).compute_transition_matrix()
a = (3 * c + 1 * c).compute_transition_matrix()
b = ~a
c.compute_transition_matrix()
assert a[0][0].transition_matrix == 3 / 4
assert b[0][0].transition_matrix == 3 / 4
assert a[1][0].transition_matrix == 1 / 4
assert b[1][0].transition_matrix == 1 / 4
