test_png: Use array.tobytes to fix py3.9 compatibility
The deprecated array.tostring() method has been removed in Python 3.9.
Use .tobytes() instead.
@@ -448,13 +448,13 @@ class Test(unittest.TestCase):
def test_interlaced_array(self):
"""Reading an interlaced PNG yields each row as an array."""
r = png.Reader(bytes=pngsuite.basi0g08)
- list(r.read()[2])[0].tostring
+ list(r.read()[2])[0].tobytes
def test_trns_array(self):
"""A type 2 PNG with tRNS chunk yields each row
as an array (using asDirect)."""
r = png.Reader(bytes=pngsuite.tbrn2c08)
- list(r.asDirect()[2])[0].tostring
+ list(r.asDirect()[2])[0].tobytes
def test_flat(self):
"""Test read_flat."""
