mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-24 20:08:10 +01:00
c2bbe9eb6c
These tests deliver all possible (single-root) four-message threads in all possible orders and check that notmuch successfully links them into threads. These tests supersede and replace the previous and much less thorough "T260-thread-order" tests. There are two variants of the test: one delivers messages that reference only their immediate parent and the other delivers messages that reference all of their parents. The latter test is currently known-broken.
33 lines
1.2 KiB
Python
33 lines
1.2 KiB
Python
# Generate all possible single-root message thread structures of size
|
|
# argv[1]. Each output line is a thread structure, where the n'th
|
|
# field is either a number giving the parent of message n or "None"
|
|
# for the root.
|
|
|
|
import sys
|
|
from itertools import chain, combinations
|
|
|
|
def subsets(s):
|
|
return chain.from_iterable(combinations(s, r) for r in range(len(s)+1))
|
|
|
|
nodes = set(range(int(sys.argv[1])))
|
|
|
|
# Queue of (tree, free, to_expand) where tree is a {node: parent}
|
|
# dictionary, free is a set of unattached nodes, and to_expand is
|
|
# itself a queue of nodes in the tree that need to be expanded.
|
|
# The queue starts with all single-node trees.
|
|
queue = [({root: None}, nodes - {root}, (root,)) for root in nodes]
|
|
|
|
# Process queue
|
|
while queue:
|
|
tree, free, to_expand = queue.pop()
|
|
|
|
if len(to_expand) == 0:
|
|
# Only print full-sized trees
|
|
if len(free) == 0:
|
|
print(" ".join(map(str, [msg[1] for msg in sorted(tree.items())])))
|
|
else:
|
|
# Expand node to_expand[0] with each possible set of children
|
|
for children in subsets(free):
|
|
ntree = dict(tree, **{child: to_expand[0] for child in children})
|
|
nfree = free.difference(children)
|
|
queue.append((ntree, nfree, to_expand[1:] + tuple(children)))
|