import io
p = 'tools/test_vst2_host.py'
s = io.open(p, encoding='utf-8', newline='').read()
old = "PLUGIN = r'C:\\Program Files\\Steinberg\\VSTPlugins\\DUNE 3.dll'"
assert old in s, 'not found'
s = s.replace(old, "PLUGIN = r'C:\\Program Files\\Steinberg\\VSTPlugins\\WaveObserver.dll'")
io.open(p, 'w', encoding='utf-8', newline='').write(s)
print('patched')