From b721e3c5f27b55a76e04a3b6a1c5ad9986c70319 Mon Sep 17 00:00:00 2001
From: Itamar Turner-Trauring <itamar@itamarst.org>
Date: Tue, 29 Sep 2020 10:51:21 -0400
Subject: [PATCH] Fix missing test coverage in fetcher.py.

---
 src/allmydata/test/test_download.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/allmydata/test/test_download.py b/src/allmydata/test/test_download.py
index 91b828c33..3a42b0819 100644
--- a/src/allmydata/test/test_download.py
+++ b/src/allmydata/test/test_download.py
@@ -1334,6 +1334,21 @@ class FakeNode(object):
 
 
 class Selection(unittest.TestCase):
+    def test_failure(self):
+        """If the fetch loop fails, it tell the Node the fetch failed."""
+        node = FakeNode()
+        # Simulate a failure:
+        node.get_num_segments = lambda: 1/0
+        sf = SegmentFetcher(node, 0, 3, None)
+        sf.add_shares([])
+        d = flushEventualQueue()
+        def _check1(ign):
+            [_] = self.flushLoggedErrors(ZeroDivisionError)
+            self.failUnless(node.failed)
+            self.failUnless(node.failed.check(ZeroDivisionError))
+        d.addCallback(_check1)
+        return d
+
     def test_no_shares(self):
         node = FakeNode()
         sf = SegmentFetcher(node, 0, 3, None)