Issue #1625: Add stream ordering test to test_bz2.
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py
index 350d2de..e2c34d5 100644
--- a/Lib/test/test_bz2.py
+++ b/Lib/test/test_bz2.py
@@ -426,6 +426,17 @@
next(bz2f)
self.assertEqual(bz2f.readlines(), [])
+ def testMultiStreamOrdering(self):
+ # Test the ordering of streams when reading a multi-stream archive.
+ data1 = b"foo" * 1000
+ data2 = b"bar" * 1000
+ with BZ2File(self.filename, "w") as bz2f:
+ bz2f.write(data1)
+ with BZ2File(self.filename, "a") as bz2f:
+ bz2f.write(data2)
+ with BZ2File(self.filename) as bz2f:
+ self.assertEqual(bz2f.read(), data1 + data2)
+
# Tests for a BZ2File wrapping another file object:
def testReadBytesIO(self):