Close #11577: Improve binhex test coverage and fix ResourceWarning

1 files changed, 11 insertions, 0 deletions

diff --git a/Lib/test/test_binhex.py b/Lib/test/test_binhex.py
index d6ef84a..a807bca 100755
--- a/Lib/test/test_binhex.py
+++ b/Lib/test/test_binhex.py
@@ -15,10 +15,12 @@ class BinHexTestCase(unittest.TestCase):
     def setUp(self):
         self.fname1 = support.TESTFN + "1"
         self.fname2 = support.TESTFN + "2"
+        self.fname3 = support.TESTFN + "very_long_filename__very_long_filename__very_long_filename__very_long_filename__"
 
     def tearDown(self):
         support.unlink(self.fname1)
         support.unlink(self.fname2)
+        support.unlink(self.fname3)
 
     DATA = b'Jack is my hero'
 
@@ -37,6 +39,15 @@ class BinHexTestCase(unittest.TestCase):
 
         self.assertEqual(self.DATA, finish)
 
+    def test_binhex_error_on_long_filename(self):
+        """
+        The testcase fails if no exception is raised when a filename parameter provided to binhex.binhex()
+        is too long, or if the exception raised in binhex.binhex() is not an instance of binhex.Error.
+        """
+        f3 = open(self.fname3, 'wb')
+        f3.close()
+
+        self.assertRaises(binhex.Error, binhex.binhex, self.fname3, self.fname2)
 
 def test_main():
     support.run_unittest(BinHexTestCase)