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import testlib
import stdio_checks
class StdIOTest(testlib.RouterMixin, testlib.TestCase):
"""
Test that stdin, stdout, and stderr conform to common expectations,
such as blocking IO.
"""
def test_can_write_stdout_1_mib(self):
"""
Writing to stdout should not raise EAGAIN. Regression test for
https://github.com/mitogen-hq/mitogen/issues/712.
"""
size = 1 * 2**20
context = self.router.local()
result = context.call(stdio_checks.shout_stdout, size)
self.assertEqual('success', result)
def test_stdio_is_blocking(self):
context = self.router.local()
stdin_blocking, stdout_blocking, stderr_blocking = context.call(
stdio_checks.stdio_is_blocking,
)
self.assertTrue(stdin_blocking)
self.assertTrue(stdout_blocking)
self.assertTrue(stderr_blocking)
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