1 files changed, 42 insertions, 0 deletions
diff --git a/src/python/test/test_cubical_complex.py b/src/python/test/test_cubical_complex.py
index 5c59db8f..29d559b3 100755
--- a/src/python/test/test_cubical_complex.py
+++ b/src/python/test/test_cubical_complex.py
@@ -157,3 +157,45 @@ def test_cubical_generators():
     assert np.array_equal(g[0][0], np.empty(shape=[0,2]))
     assert np.array_equal(g[0][1], np.array([[7, 4]]))
     assert np.array_equal(g[1][0], np.array([8]))
+
+def test_cubical_cofaces_of_persistence_pairs_when_pd_has_no_paired_birth_and_death():
+    cubCpx = CubicalComplex(dimensions=[1,2], top_dimensional_cells=[0.0, 1.0])
+    Diag = cubCpx.persistence(homology_coeff_field=2, min_persistence=0)
+    pairs = cubCpx.cofaces_of_persistence_pairs()
+    assert pairs[0] == []
+    assert np.array_equal(pairs[1][0], np.array([0]))
+
+def test_periodic_cofaces_of_persistence_pairs_when_pd_has_no_paired_birth_and_death():
+    perCubCpx = PeriodicCubicalComplex(dimensions=[1,2], top_dimensional_cells=[0.0, 1.0],
+                                       periodic_dimensions=[True, True])
+    Diag = perCubCpx.persistence(homology_coeff_field=2, min_persistence=0)
+    pairs = perCubCpx.cofaces_of_persistence_pairs()
+    assert pairs[0] == []
+    assert np.array_equal(pairs[1][0], np.array([0]))
+    assert np.array_equal(pairs[1][1], np.array([0, 1]))
+    assert np.array_equal(pairs[1][2], np.array([1]))
+
+def test_cubical_persistence_intervals_in_dimension():
+    cub = CubicalComplex(
+        dimensions=[3, 3],
+        top_dimensional_cells=[1, 2, 3, 4, 5, 6, 7, 8, 9],
+    )
+    cub.compute_persistence()
+    H0 = cub.persistence_intervals_in_dimension(0)
+    assert np.array_equal(H0, np.array([[ 1., float("inf")]]))
+    assert cub.persistence_intervals_in_dimension(1).shape == (0, 2)
+
+def test_periodic_cubical_persistence_intervals_in_dimension():
+    cub = PeriodicCubicalComplex(
+        dimensions=[3, 3],
+        top_dimensional_cells=[1, 2, 3, 4, 5, 6, 7, 8, 9],
+        periodic_dimensions = [True, True]
+    )
+    cub.compute_persistence()
+    H0 = cub.persistence_intervals_in_dimension(0)
+    assert np.array_equal(H0, np.array([[ 1., float("inf")]]))
+    H1 = cub.persistence_intervals_in_dimension(1)
+    assert np.array_equal(H1, np.array([[ 3., float("inf")], [ 7., float("inf")]]))
+    H2 = cub.persistence_intervals_in_dimension(2)
+    assert np.array_equal(H2, np.array([[ 9., float("inf")]]))
+    assert cub.persistence_intervals_in_dimension(3).shape == (0, 2)