add Cell tester + FIX: west setter for Cell class

tests/test_Cell.py

@@ -0,0 +1,31 @@
+import pytest
+from amaz_lib.Cell import Cell
+
+
+def test_cell_setter_getter() -> None:
+    cell = Cell(value=0)
+
+    cell.set_north(True)
+    assert cell.get_north() is True
+    cell.set_north(False)
+    assert cell.get_north() is False
+
+    cell.set_est(True)
+    assert cell.get_est() is True
+    cell.set_est(False)
+    assert cell.get_est() is False
+
+    cell.set_south(True)
+    assert cell.get_south() is True
+    cell.set_south(False)
+    assert cell.get_south() is False
+
+    cell.set_west(True)
+    assert cell.get_west() is True
+    cell.set_west(False)
+    assert cell.get_west() is False
+
+    cell.set_value(8)
+    assert cell.get_value() == 8
+    cell.set_value(0)
+    assert cell.get_value() == 0