Added ConfigHandler.strict_mode.

1 files changed, 13 insertions, 2 deletions

diff --git a/setuptools/tests/test_config.py b/setuptools/tests/test_config.py
index d044cbac..f1b1aa3f 100644
--- a/setuptools/tests/test_config.py
+++ b/setuptools/tests/test_config.py
@@ -130,8 +130,7 @@ class TestMetadata:
             'unknown = some\n'
         )
         with get_dist(tmpdir, parse=False) as dist:
-            with pytest.raises(DistutilsOptionError):
-                dist.parse_config_files()
+            dist.parse_config_files()  # Skip unknown.
 
     def test_usupported_section(self, tmpdir):
 
@@ -274,6 +273,18 @@ class TestOptions:
         with get_dist(tmpdir) as dist:
             assert dist.packages == ['fake_package']
 
+    def test_unknown_options_item(self, tmpdir):
+
+        fake_env(
+            tmpdir,
+            '[options]\n'
+            'zip_safe = True\n'
+            'usr_2to3 = 1\n'
+        )
+        with get_dist(tmpdir, parse=False) as dist:
+            with pytest.raises(DistutilsOptionError):
+                dist.parse_config_files()
+
     def test_extras_require(self, tmpdir):
         fake_env(
             tmpdir,