commit
a2acebe3f5
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**/*.pyc
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.pydevproject
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language: python
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python:
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- "2.7"
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script:
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- python test/wait-for-it.py
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import unittest
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import shlex
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from subprocess import Popen, PIPE
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import os
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import sys
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import socket
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import re
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MISSING_ARGS_TEXT = "Error: you need to provide a host and port to test."
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HELP_TEXT = "Usage:" # Start of help text
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DIVIDE_LINE = '-'*71 # Output line of dashes
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class TestWaitForIt(unittest.TestCase):
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"""
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TestWaitForIt tests the wait-for-it.sh shell script.
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The wait-for-it.sh script is assumed to be in the parent directory to
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the test script.
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"""
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def execute(self, cmd):
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"""Executes a command and returns exit code, STDOUT, STDERR"""
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args = shlex.split(cmd)
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proc = Popen(args, stdout=PIPE, stderr=PIPE)
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out, err = proc.communicate()
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exitcode = proc.returncode
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return exitcode, out, err
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def open_local_port(self, host="localhost", port=8929, timeout=5):
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s = socket.socket()
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s.bind((host, port))
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s.listen(timeout)
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return s
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def check_args(self, args, stdout_regex, stderr_regex, exitcode):
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command = self.wait_script + " " + args
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actual_exitcode, out, err = self.execute(command)
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# Check stderr
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msg = ("Failed check that STDERR:\n" +
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DIVIDE_LINE + "\n" + err + "\n" + DIVIDE_LINE +
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"\nmatches:\n" +
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DIVIDE_LINE + "\n" + stderr_regex + "\n" + DIVIDE_LINE)
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self.assertIsNotNone(re.match(stderr_regex, err, re.DOTALL), msg)
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# Check STDOUT
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msg = ("Failed check that STDOUT:\n" +
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DIVIDE_LINE + "\n" + out + "\n" + DIVIDE_LINE +
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"\nmatches:\n" +
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DIVIDE_LINE + "\n" + stdout_regex + "\n" + DIVIDE_LINE)
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self.assertIsNotNone(re.match(stdout_regex, out, re.DOTALL), msg)
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# Check exit code
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self.assertEqual(actual_exitcode, exitcode)
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def setUp(self):
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script_path = os.path.dirname(sys.argv[0])
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parent_path = os.path.abspath(os.path.join(script_path, os.pardir))
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self.wait_script = os.path.join(parent_path, "wait-for-it.sh")
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def test_no_args(self):
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"""
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Check that no aruments returns the missing args text and the
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correct return code
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"""
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self.check_args(
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"",
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"^$",
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MISSING_ARGS_TEXT,
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1
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)
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# Return code should be 1 when called with no args
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exitcode, out, err = self.execute(self.wait_script)
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self.assertEqual(exitcode, 1)
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def test_help(self):
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""" Check that help text is printed with --help argument """
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self.check_args(
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"--help",
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"",
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HELP_TEXT,
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1
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)
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def test_no_port(self):
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""" Check with missing port argument """
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self.check_args(
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"--host=localhost",
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"",
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MISSING_ARGS_TEXT,
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1
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)
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def test_no_host(self):
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""" Check with missing hostname argument """
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self.check_args(
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"--port=80",
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"",
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MISSING_ARGS_TEXT,
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1
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)
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def test_host_port(self):
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""" Check that --host and --port args work correctly """
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soc = self.open_local_port(port=8929)
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self.check_args(
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"--host=localhost --port=8929 --timeout=1",
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"",
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"wait-for-it.sh: waiting 1 seconds for localhost:8929",
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0
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)
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soc.close()
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def test_combined_host_port(self):
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"""
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Tests that wait-for-it.sh returns correctly after establishing a
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connectionm using combined host and ports
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"""
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soc = self.open_local_port(port=8929)
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self.check_args(
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"localhost:8929 --timeout=1",
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"",
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"wait-for-it.sh: waiting 1 seconds for localhost:8929",
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0
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)
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soc.close()
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def test_port_failure_with_timeout(self):
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"""
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Note exit status of 124 is exected, passed from the timeout command
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"""
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self.check_args(
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"localhost:8929 --timeout=1",
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"",
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".*timeout occurred after waiting 1 seconds for localhost:8929",
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124
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)
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def test_command_execution(self):
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"""
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Checks that a command executes correctly after a port test passes
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"""
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soc = self.open_local_port(port=8929)
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self.check_args(
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"localhost:8929 -- echo \"CMD OUTPUT\"",
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"CMD OUTPUT",
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".*wait-for-it.sh: localhost:8929 is available after 0 seconds",
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0
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)
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soc.close()
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def test_failed_command_execution(self):
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"""
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Check command failure. The command in question outputs STDERR and
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an exit code of 2
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"""
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soc = self.open_local_port(port=8929)
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self.check_args(
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"localhost:8929 -- ls not_real_file",
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"",
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".*No such file or directory\n",
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2
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)
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soc.close()
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def test_command_after_connection_failure(self):
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"""
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Test that a command still runs even if a connection times out
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and that the return code is correct for the comand being run
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"""
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self.check_args(
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"localhost:8929 --timeout=1 -- echo \"CMD OUTPUT\"",
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"CMD OUTPUT",
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".*timeout occurred after waiting 1 seconds for localhost:8929",
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0
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)
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if __name__ == '__main__':
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unittest.main()
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