def test_collapse_edges():
st = SimplexTree()
assert st.insert([0, 1], filtration=1.0) == True
assert st.insert([1, 2], filtration=1.0) == True
assert st.insert([2, 3], filtration=1.0) == True
assert st.insert([0, 3], filtration=1.0) == True
assert st.insert([0, 2], filtration=2.0) == True
assert st.insert([1, 3], filtration=2.0) == True
assert st.num_simplices() == 10
st.collapse_edges()
assert st.num_simplices() == 9
assert st.find([1, 3]) == False
for simplex in st.get_skeleton(0):
assert simplex[1] == 1.
def test_collapse_edges():
st = SimplexTree()
assert st.insert([0, 1], filtration=1.0) == True
assert st.insert([1, 2], filtration=1.0) == True
assert st.insert([2, 3], filtration=1.0) == True
assert st.insert([0, 3], filtration=1.0) == True
assert st.insert([0, 2], filtration=2.0) == True
assert st.insert([1, 3], filtration=2.0) == True
assert st.num_simplices() == 10
if __GUDHI_USE_EIGEN3:
st.collapse_edges()
assert st.num_simplices() == 9
assert st.find([1, 3]) == False
for simplex in st.get_skeleton(0):
assert simplex[1] == 1.
else:
# If no Eigen3, collapse_edges throws an exception
with pytest.raises(RuntimeError):
st.collapse_edges()