Add tests a collapse test

Author: ArzhelaR

actions/triangular_actions.py

@@ -147,21 +147,6 @@ def collapse_edge(mesh: Mesh, n1: Node, n2: Node) -> True:
     return mesh_check(mesh)
 
 
-def test_boundary(n1: Node, n2: Node) -> bool:
-    boundary_darts_n1 = []
-    boundary_darts_n2 = []
-    for d in adjacent_darts(n1):
-        if d.get_beta(2) is None:
-            boundary_darts_n1.append(d)
-    for d in adjacent_darts(n2):
-        if d.get_beta(2) is None:
-            boundary_darts_n2.append(d)
-    if (len(boundary_darts_n1) + len(boundary_darts_n2)) > 3:
-        return False
-    else:
-        return True
-
-
 def check_beta2_relation(mesh: Mesh) -> bool:
     for dart_info in mesh.active_darts():
         d = dart_info[0]

test_modules/test_actions.py

@@ -1,8 +1,10 @@
 import unittest
 import mesh_model.mesh_struct.mesh as mesh
 from mesh_model.mesh_struct.mesh_elements import Dart, Node
-
+from mesh_model.random_trimesh import regular_mesh
 from actions.triangular_actions import split_edge, flip_edge, collapse_edge
+from plots.mesh_plotter import plot_mesh
+
 
 class TestActions(unittest.TestCase):
 
@@ -61,14 +63,22 @@ def test_collapse(self):
         nodes = [[0.0, 0.0], [1.0, 0.0], [1.0, 1.0], [0.0, 1.0]]
         faces = [[0, 1, 2], [0, 2, 3]]
         cmap = mesh.Mesh(nodes, faces)
+        plot_mesh(cmap)
         n00 = Node(cmap, 0)
         n11 = Node(cmap, 2)
         split_edge(cmap, n00, n11)
+        plot_mesh(cmap)
         n5 = Node(cmap, 4)
         collapse_edge(cmap, n00, n5)
         d1_to_test = Dart(cmap, 7)
         d2_to_test = Dart(cmap, 0)
         self.assertEqual(collapse_edge(cmap, n00, n5), False)
+        # Test possible collapse
+        cmap = regular_mesh(16)
+        d = Dart(cmap, 0)
+        n0 = d.get_node()
+        n1 = d.get_beta(1).get_node()
+        self.assertEqual(collapse_edge(cmap, n0, n1), True)
 
     def test_split_collapse_split(self):
         nodes = [[0.0, 0.0], [1.0, 0.0], [1.0, 1.0], [0.0, 1.0]]