115 lines
3.5 KiB
Python
Executable File
115 lines
3.5 KiB
Python
Executable File
from __future__ import absolute_import, division, print_function
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import os
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import shutil
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import subprocess
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from subprocess import Popen
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import sys
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from tempfile import mkdtemp
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import time
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from tornado.test.util import unittest
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class AutoreloadTest(unittest.TestCase):
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def test_reload_module(self):
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main = """\
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import os
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import sys
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from tornado import autoreload
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# This import will fail if path is not set up correctly
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import testapp
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print('Starting')
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if 'TESTAPP_STARTED' not in os.environ:
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os.environ['TESTAPP_STARTED'] = '1'
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sys.stdout.flush()
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autoreload._reload()
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"""
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# Create temporary test application
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path = mkdtemp()
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self.addCleanup(shutil.rmtree, path)
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os.mkdir(os.path.join(path, 'testapp'))
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open(os.path.join(path, 'testapp/__init__.py'), 'w').close()
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with open(os.path.join(path, 'testapp/__main__.py'), 'w') as f:
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f.write(main)
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# Make sure the tornado module under test is available to the test
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# application
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pythonpath = os.getcwd()
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if 'PYTHONPATH' in os.environ:
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pythonpath += os.pathsep + os.environ['PYTHONPATH']
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p = Popen(
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[sys.executable, '-m', 'testapp'], stdout=subprocess.PIPE,
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cwd=path, env=dict(os.environ, PYTHONPATH=pythonpath),
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universal_newlines=True)
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out = p.communicate()[0]
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self.assertEqual(out, 'Starting\nStarting\n')
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def test_reload_wrapper_preservation(self):
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# This test verifies that when `python -m tornado.autoreload`
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# is used on an application that also has an internal
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# autoreload, the reload wrapper is preserved on restart.
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main = """\
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import os
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import sys
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# This import will fail if path is not set up correctly
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import testapp
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if 'tornado.autoreload' not in sys.modules:
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raise Exception('started without autoreload wrapper')
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import tornado.autoreload
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print('Starting')
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sys.stdout.flush()
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if 'TESTAPP_STARTED' not in os.environ:
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os.environ['TESTAPP_STARTED'] = '1'
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# Simulate an internal autoreload (one not caused
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# by the wrapper).
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tornado.autoreload._reload()
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else:
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# Exit directly so autoreload doesn't catch it.
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os._exit(0)
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"""
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# Create temporary test application
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path = mkdtemp()
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os.mkdir(os.path.join(path, 'testapp'))
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self.addCleanup(shutil.rmtree, path)
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init_file = os.path.join(path, 'testapp', '__init__.py')
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open(init_file, 'w').close()
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main_file = os.path.join(path, 'testapp', '__main__.py')
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with open(main_file, 'w') as f:
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f.write(main)
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# Make sure the tornado module under test is available to the test
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# application
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pythonpath = os.getcwd()
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if 'PYTHONPATH' in os.environ:
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pythonpath += os.pathsep + os.environ['PYTHONPATH']
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autoreload_proc = Popen(
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[sys.executable, '-m', 'tornado.autoreload', '-m', 'testapp'],
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stdout=subprocess.PIPE, cwd=path,
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env=dict(os.environ, PYTHONPATH=pythonpath),
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universal_newlines=True)
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# This timeout needs to be fairly generous for pypy due to jit
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# warmup costs.
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for i in range(40):
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if autoreload_proc.poll() is not None:
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break
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time.sleep(0.1)
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else:
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autoreload_proc.kill()
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raise Exception("subprocess failed to terminate")
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out = autoreload_proc.communicate()[0]
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self.assertEqual(out, 'Starting\n' * 2)
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