def test_simplex_tree_deep_copy_constructor():
st = SimplexTree()
st.insert([1, 2, 3], 0.)
# compute persistence only on the original
st.compute_persistence()
st_copy = SimplexTree(st)
assert st_copy == st
st_filt_list = list(st.get_filtration())
# check persistence is not copied
assert st.__is_persistence_defined() == True
assert st_copy.__is_persistence_defined() == False
# remove something in the copy and check the copy is included in the original
st_copy.remove_maximal_simplex([1, 2, 3])
a_filt_list = list(st_copy.get_filtration())
assert len(a_filt_list) < len(st_filt_list)
for a_splx in a_filt_list:
assert a_splx in st_filt_list
# test double free
del st
del st_copy
def test_automatic_dimension():
st = SimplexTree()
assert st.__is_defined() == True
assert st.__is_persistence_defined() == False
# insert test
assert st.insert([0, 1, 3], filtration=0.5) == True
assert st.insert([0, 1, 2], filtration=1.0) == True
assert st.num_vertices() == 4
assert st.num_simplices() == 11
assert st.dimension() == 2
assert st.upper_bound_dimension() == 2
assert st.prune_above_filtration(0.6) == True
assert st.dimension() == 2
assert st.upper_bound_dimension() == 2
st.assign_filtration([0, 1, 3], 0.7)
assert st.filtration([0, 1, 3]) == 0.7
st.remove_maximal_simplex([0, 1, 3])
assert st.upper_bound_dimension() == 2
assert st.dimension() == 1
assert st.upper_bound_dimension() == 1
def test_insertion():
st = SimplexTree()
assert st.__is_defined() == True
assert st.__is_persistence_defined() == False
# insert test
assert st.insert([0, 1]) == True
assert st.dimension() == 1
assert st.insert([0, 1, 2], filtration=4.0) == True
assert st.dimension() == 2
assert st.num_simplices() == 7
assert st.num_vertices() == 3
# find test
assert st.find([0, 1, 2]) == True
assert st.find([0, 1]) == True
assert st.find([0, 2]) == True
assert st.find([0]) == True
assert st.find([1]) == True
assert st.find([2]) == True
assert st.find([3]) == False
assert st.find([0, 3]) == False
assert st.find([1, 3]) == False
assert st.find([2, 3]) == False
# filtration test
assert st.filtration([0, 1, 2]) == 4.0
assert st.filtration([0, 2]) == 4.0
assert st.filtration([1, 2]) == 4.0
assert st.filtration([2]) == 4.0
assert st.filtration([0, 1]) == 0.0
assert st.filtration([0]) == 0.0
assert st.filtration([1]) == 0.0
# skeleton test
assert list(st.get_skeleton(2)) == [
([0, 1, 2], 4.0),
([0, 1], 0.0),
([0, 2], 4.0),
([0], 0.0),
([1, 2], 4.0),
([1], 0.0),
([2], 4.0),
]
assert list(st.get_skeleton(1)) == [
([0, 1], 0.0),
([0, 2], 4.0),
([0], 0.0),
([1, 2], 4.0),
([1], 0.0),
([2], 4.0),
]
assert list(st.get_skeleton(0)) == [([0], 0.0), ([1], 0.0), ([2], 4.0)]
# remove_maximal_simplex test
assert st.get_cofaces([0, 1, 2], 1) == []
st.remove_maximal_simplex([0, 1, 2])
assert list(st.get_skeleton(2)) == [
([0, 1], 0.0),
([0, 2], 4.0),
([0], 0.0),
([1, 2], 4.0),
([1], 0.0),
([2], 4.0),
]
assert st.find([0, 1, 2]) == False
assert st.find([0, 1]) == True
assert st.find([0, 2]) == True
assert st.find([0]) == True
assert st.find([1]) == True
assert st.find([2]) == True
assert st.persistence(persistence_dim_max=True) == [
(1, (4.0, float("inf"))),
(0, (0.0, float("inf"))),
]
assert st.__is_persistence_defined() == True
assert st.betti_numbers() == [1, 1]
assert st.persistent_betti_numbers(-0.1, 10000.0) == [0, 0]
assert st.persistent_betti_numbers(0.0, 10000.0) == [1, 0]
assert st.persistent_betti_numbers(3.9, 10000.0) == [1, 0]
assert st.persistent_betti_numbers(4.0, 10000.0) == [1, 1]
assert st.persistent_betti_numbers(9999.0, 10000.0) == [1, 1]