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"""Write to a handful of file descriptors, to test the childFDs= argument of
reactor.spawnProcess()
"""
import os
import sys
if __name__ == "__main__":
debug = 0
if debug:
stderr = os.fdopen(2, "w")
if debug:
print("this is stderr", file=stderr)
abcd = os.read(0, 4)
if debug:
print("read(0):", abcd, file=stderr)
if abcd != b"abcd":
sys.exit(1)
if debug:
print("os.write(1, righto)", file=stderr)
os.write(1, b"righto")
efgh = os.read(3, 4)
if debug:
print("read(3):", file=stderr)
if efgh != b"efgh":
sys.exit(2)
if debug:
print("os.close(4)", file=stderr)
os.close(4)
eof = os.read(5, 4)
if debug:
print("read(5):", eof, file=stderr)
if eof != b"":
sys.exit(3)
if debug:
print("os.write(1, closed)", file=stderr)
os.write(1, b"closed")
if debug:
print("sys.exit(0)", file=stderr)
sys.exit(0)