two more doctests in graphs

sagemath · Jul 12, 2021 · 430afa9 · 430afa9
1 parent d471e7e
commit 430afa9
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diff --git a/src/sage/graphs/graph_decompositions/cutwidth.pyx b/src/sage/graphs/graph_decompositions/cutwidth.pyx
@@ -328,7 +328,7 @@ def cutwidth(G, algorithm="exponential", cut_off=0, solver=None, verbose=False):
     Comparison of algorithms::
 
         sage: from sage.graphs.graph_decompositions.cutwidth import cutwidth
-        sage: for i in range(2):  # long time
+        sage: for i in range(2):  # long time  # not tested, known bug (see :trac:`32131`)
         ....:     G = graphs.RandomGNP(7, 0.3)
         ....:     ve, le = cutwidth(G, algorithm="exponential")
         ....:     vm, lm = cutwidth(G, algorithm="MILP", solver='GLPK')
@@ -640,7 +640,7 @@ def cutwidth_MILP(G, lower_bound=0, solver=None, verbose=0):
     Comparison with exponential algorithm::
 
         sage: from sage.graphs.graph_decompositions import cutwidth
-        sage: for i in range(2):  # long time
+        sage: for i in range(2):  # long time  # not tested, known bug (see :trac:`32131`)
         ....:     G = graphs.RandomGNP(7, 0.3)
         ....:     ve, le = cutwidth.cutwidth_dyn(G)
         ....:     vm, lm = cutwidth.cutwidth_MILP(G, solver='GLPK')

diff --git a/src/sage/graphs/spanning_tree.pyx b/src/sage/graphs/spanning_tree.pyx
@@ -197,7 +197,7 @@ cpdef kruskal(G, wfunction=None, bint check=False):
 
         sage: def my_disconnected_graph(n, ntries, directed=False, multiedges=False, loops=False):
         ....:     G = Graph()
-        ....:     k = randint(1, n)
+        ....:     k = randint(2, n)
         ....:     G.add_vertices(range(k))
         ....:     if directed:
         ....:         G = G.to_directed()