From 883db6a2161d4bcf8aa2ecbcab34c74f0ff011c6 Mon Sep 17 00:00:00 2001
From: Bruno Oliveira <bruno@esss.com.br>
Date: Tue, 4 Jun 2019 17:04:15 -0300
Subject: [PATCH] Add test for packages with broken metadata

Related to #5389
---
 testing/test_config.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/testing/test_config.py b/testing/test_config.py
index 7b2a1209e..c3b027ab9 100644
--- a/testing/test_config.py
+++ b/testing/test_config.py
@@ -578,6 +578,29 @@ def test_setuptools_importerror_issue1479(testdir, monkeypatch):
         testdir.parseconfig()
 
 
+def test_importlib_metadata_broken_distribution(testdir, monkeypatch):
+    """Integration test for broken distributions with 'files' metadata being None (#5389)"""
+    monkeypatch.delenv("PYTEST_DISABLE_PLUGIN_AUTOLOAD", raising=False)
+
+    class DummyEntryPoint:
+        name = "mytestplugin"
+        group = "pytest11"
+
+        def load(self):
+            return object()
+
+    class Distribution:
+        version = "1.0"
+        files = None
+        entry_points = (DummyEntryPoint(),)
+
+    def distributions():
+        return (Distribution(),)
+
+    monkeypatch.setattr(importlib_metadata, "distributions", distributions)
+    testdir.parseconfig()
+
+
 @pytest.mark.parametrize("block_it", [True, False])
 def test_plugin_preparse_prevents_setuptools_loading(testdir, monkeypatch, block_it):
     monkeypatch.delenv("PYTEST_DISABLE_PLUGIN_AUTOLOAD", raising=False)