added some tests

tests/ft_test.py

@@ -4,7 +4,41 @@ import unittest
 class TestFamilyTree(unittest.TestCase):
 
     def setUp(self):
+        r"""For testing.
+              A
+             / \
+            B   C
+           / \
+          D   E
+        """
         self.ftree = c.FamilyTree()
+        ftree = c.FamilyTree()
+        A = c.Person("A", 69, True)
+        B = c.Person("B", 69, True)
+        C = c.Person("C", 69, False)
+        D = c.Person("D", 69, True)
+        E = c.Person("E", 666, False)
+        ftree.insert_person(A)
+        ftree.insert_person(B)
+        ftree.insert_person(C)
+        ftree.insert_person(D)
+        ftree.insert_person(E)
+        B.set_parent(A)
+        C.set_parent(A)
+        D.set_parent(B)
+        E.set_parent(B)
+        ftree.find_root()
+
+    def test_find_ancestors(self):
+        pass
+
+    def test_find_descendants(self):
+        pass
+
+    def test_set_generations(self):
+        pass
+
+    def test_relationship(self):
 
 
 if __name__ == "__main__":