added a test for gens_orders() method

src/sage/groups/abelian_gps/abelian_group.py

@@ -978,8 +978,12 @@ def gens_orders(self):
             sage: Z2xZ3 is Z6
             False
 
-        TESTS::
 
+        TESTS::
+            sage: G, (g0, g1) = AbelianGroup(2, [48, 0]).objgens()
+            sage: G0 = G.subgroup([g0])
+            sage: len(G0.gens()) == len(G0.gens_orders())
+            True
             sage: F = AbelianGroup(3, [2], names='abc')
             sage: list(map(type, F.gens_orders()))
             [<class 'sage.rings.integer.Integer'>,
@@ -1629,7 +1633,7 @@ def __init__(self, ambient, gens, names="f", category=None):
             Multiplicative Abelian subgroup isomorphic to Z x Z generated by {a^3, b}
             sage: F.subgroup([c])
             Multiplicative Abelian subgroup isomorphic to C2 x C3 x C5 generated by {c}
-            sage: F.subgroup([a, c])
+            sage: S = F.subgroup([a, c]); S
             Multiplicative Abelian subgroup isomorphic to C2 x C3 x C5 x Z generated by {a, c}
             sage: F.subgroup([a, b*c])
             Multiplicative Abelian subgroup isomorphic to Z x Z generated by {a, b*c}