Merged revisions 68484-68485 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68484 | antoine.pitrou | 2009-01-10 17:13:45 +0100 (sam., 10 janv. 2009) | 3 lines

  Issue #3860: GzipFile and BZ2File now support the context manager protocol.
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  r68485 | antoine.pitrou | 2009-01-10 17:15:24 +0100 (sam., 10 janv. 2009) | 1 line

  Add NEWS entry for r68484.
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Lib/test/test_gzip.py

@@ -166,7 +166,6 @@ class TestGzip(unittest.TestCase):
         fWrite = gzip.GzipFile(self.filename, 'w', mtime = mtime)
         fWrite.write(data1)
         fWrite.close()
-
         fRead = gzip.GzipFile(self.filename)
         dataRead = fRead.read()
         self.assertEqual(dataRead, data1)
@@ -223,6 +222,27 @@ class TestGzip(unittest.TestCase):
 
         fRead.close()
 
+    def test_with_open(self):
+        # GzipFile supports the context management protocol
+        with gzip.GzipFile(self.filename, "wb") as f:
+            f.write(b"xxx")
+        f = gzip.GzipFile(self.filename, "rb")
+        f.close()
+        try:
+            with f:
+                pass
+        except ValueError:
+            pass
+        else:
+            self.fail("__enter__ on a closed file didn't raise an exception")
+        try:
+            with gzip.GzipFile(self.filename, "wb") as f:
+                1/0
+        except ZeroDivisionError:
+            pass
+        else:
+            self.fail("1/0 didn't raise an exception")
+
 def test_main(verbose=None):
     support.run_unittest(TestGzip)