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[tor-commits] [stem/master] Moving test tasks to its own module



commit f52141e1e0becb4b3899b7da8d62f1591b1b2a36
Author: Damian Johnson <atagar@xxxxxxxxxxxxxx>
Date:   Thu May 18 11:38:09 2017 -0700

    Moving test tasks to its own module
    
    Everything is miscellaneous. Our test.util module does two distinct things:
    startup tasks and testing prerequisits. These are better as their own small
    dedicated modules. Moving the startup tasks out first. There's more tweaks I
    want to make here but starting with just the bulk move.
---
 run_tests.py |  29 ++++----
 test/task.py | 228 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 test/util.py | 233 +++--------------------------------------------------------
 3 files changed, 252 insertions(+), 238 deletions(-)

diff --git a/run_tests.py b/run_tests.py
index f4f49c0..b64857c 100755
--- a/run_tests.py
+++ b/run_tests.py
@@ -29,10 +29,11 @@ import test.arguments
 import test.integ.installation
 import test.output
 import test.runner
+import test.task
 import test.util
 
 from test.output import STATUS, SUCCESS, ERROR, NO_NL, STDERR, println
-from test.util import STEM_BASE, Task
+from test.util import STEM_BASE
 
 CONFIG = stem.util.conf.config_dict('test', {
   'integ.test_directory': './test/data',
@@ -72,7 +73,7 @@ If you're running the latest version of stem then please file a ticket on:
 New capabilities are:
 """
 
-PYFLAKES_TASK = Task(
+PYFLAKES_TASK = test.task.Task(
   'running pyflakes',
   stem.util.test_tools.pyflakes_issues,
   args = (SRC_PATHS,),
@@ -81,7 +82,7 @@ PYFLAKES_TASK = Task(
   print_runtime = True,
 )
 
-PYCODESTYLE_TASK = Task(
+PYCODESTYLE_TASK = test.task.Task(
   'running pycodestyle',
   stem.util.test_tools.stylistic_issues,
   args = (SRC_PATHS, True, True, True),
@@ -153,20 +154,20 @@ def main():
       pycodestyle_task = PYCODESTYLE_TASK
 
   if args.run_integ:
-    tor_version_check = Task('checking tor version', test.util.check_tor_version, (args.tor_path,))
+    tor_version_check = test.task.Task('checking tor version', test.task.check_tor_version, (args.tor_path,))
 
-  test.util.run_tasks(
+  test.task.run_tasks(
     'INITIALISING',
-    Task('checking stem version', test.util.check_stem_version),
+    test.task.Task('checking stem version', test.task.check_stem_version),
     tor_version_check,
-    Task('checking python version', test.util.check_python_version),
-    Task('checking cryptography version', test.util.check_cryptography_version),
-    Task('checking pynacl version', test.util.check_pynacl_version),
-    Task('checking mock version', test.util.check_mock_version),
-    Task('checking pyflakes version', test.util.check_pyflakes_version),
-    Task('checking pycodestyle version', test.util.check_pycodestyle_version),
-    Task('checking for orphaned .pyc files', test.util.clean_orphaned_pyc, (SRC_PATHS,)),
-    Task('checking for unused tests', test.util.check_for_unused_tests, [(
+    test.task.Task('checking python version', test.task.check_python_version),
+    test.task.Task('checking cryptography version', test.task.check_cryptography_version),
+    test.task.Task('checking pynacl version', test.task.check_pynacl_version),
+    test.task.Task('checking mock version', test.task.check_mock_version),
+    test.task.Task('checking pyflakes version', test.task.check_pyflakes_version),
+    test.task.Task('checking pycodestyle version', test.task.check_pycodestyle_version),
+    test.task.Task('checking for orphaned .pyc files', test.task.clean_orphaned_pyc, (SRC_PATHS,)),
+    test.task.Task('checking for unused tests', test.task.check_for_unused_tests, [(
       os.path.join(STEM_BASE, 'test', 'unit'),
       os.path.join(STEM_BASE, 'test', 'integ'),
     )]),
diff --git a/test/task.py b/test/task.py
new file mode 100644
index 0000000..7827f59
--- /dev/null
+++ b/test/task.py
@@ -0,0 +1,228 @@
+# Copyright 2012-2017, Damian Johnson and The Tor Project
+# See LICENSE for licensing information
+
+"""
+:class:`~test.task.Task` that can be ran with :func:`~test.task.run_tasks` to initialize our tests. tasks are...
+
+::
+
+  Initialization Tasks
+  |- check_stem_version - checks our version of stem
+  |- check_tor_version - checks our version of tor
+  |- check_python_version - checks our version of python
+  |- check_cryptography_version - checks our version of cryptography
+  |- check_pynacl_version - checks our version of pynacl
+  |- check_pyflakes_version - checks our version of pyflakes
+  |- check_pycodestyle_version - checks our version of pycodestyle
+  |- clean_orphaned_pyc - removes any *.pyc without a corresponding *.py
+  +- check_for_unused_tests - checks to see if any tests are missing from our settings
+"""
+
+import os
+import re
+import sys
+import time
+
+import stem
+import stem.prereq
+import stem.util.conf
+import stem.util.system
+import stem.util.test_tools
+import stem.version
+
+import test.output
+import test.util
+
+from test.output import STATUS, ERROR, NO_NL, println
+
+CONFIG = stem.util.conf.config_dict('test', {
+  'integ.test_directory': './test/data',
+  'test.unit_tests': '',
+  'test.integ_tests': '',
+})
+
+
+def check_stem_version():
+  return stem.__version__
+
+
+def check_tor_version(tor_path):
+  return str(test.util.tor_version(tor_path)).split()[0]
+
+
+def check_python_version():
+  return '.'.join(map(str, sys.version_info[:3]))
+
+
+def check_cryptography_version():
+  if stem.prereq.is_crypto_available():
+    import cryptography
+    return cryptography.__version__
+  else:
+    return 'missing'
+
+
+def check_pynacl_version():
+  if stem.prereq._is_pynacl_available():
+    import nacl
+    return nacl.__version__
+  else:
+    return 'missing'
+
+
+def check_mock_version():
+  if stem.prereq.is_mock_available():
+    try:
+      import unittest.mock as mock
+    except ImportError:
+      import mock
+
+    return mock.__version__
+  else:
+    return 'missing'
+
+
+def check_pyflakes_version():
+  try:
+    import pyflakes
+    return pyflakes.__version__
+  except ImportError:
+    return 'missing'
+
+
+def check_pycodestyle_version():
+  if stem.util.test_tools._module_exists('pycodestyle'):
+    import pycodestyle
+  elif stem.util.test_tools._module_exists('pep8'):
+    import pep8 as pycodestyle
+  else:
+    return 'missing'
+
+  return pycodestyle.__version__
+
+
+def clean_orphaned_pyc(paths):
+  """
+  Deletes any file with a *.pyc extention without a corresponding *.py.
+
+  :param list paths: paths to search for orphaned pyc files
+  """
+
+  return ['removed %s' % path for path in stem.util.test_tools.clean_orphaned_pyc(paths)]
+
+
+def check_for_unused_tests(paths):
+  """
+  The 'test.unit_tests' and 'test.integ_tests' in our settings.cfg defines the
+  tests that we run. We do it this way so that we can control the order in
+  which our tests are run but there's a disadvantage: when we add new test
+  modules we can easily forget to add it there.
+
+  Checking to see if we have any unittest.TestCase subclasses not covered by
+  our settings.
+
+  :param list paths: paths to search for unused tests
+  """
+
+  unused_tests = []
+
+  for path in paths:
+    for py_path in stem.util.system.files_with_suffix(path, '.py'):
+      if os.path.normpath(CONFIG['integ.test_directory']) in py_path:
+        continue
+
+      with open(py_path) as f:
+        file_contents = f.read()
+
+      test_match = re.search('^class (\S*)\(unittest.TestCase\):$', file_contents, re.MULTILINE)
+
+      if test_match:
+        class_name = test_match.groups()[0]
+        module_name = py_path.replace(os.path.sep, '.')[len(test.util.STEM_BASE) + 1:-3] + '.' + class_name
+
+        if not (module_name in CONFIG['test.unit_tests'] or module_name in CONFIG['test.integ_tests']):
+          unused_tests.append(module_name)
+
+  if unused_tests:
+    raise ValueError('Test modules are missing from our test/settings.cfg:\n%s' % '\n'.join(unused_tests))
+
+
+def run_tasks(category, *tasks):
+  """
+  Runs a series of :class:`test.util.Task` instances. This simply prints 'done'
+  or 'failed' for each unless we fail one that is marked as being required. If
+  that happens then we print its error message and call sys.exit().
+
+  :param str category: label for the series of tasks
+  :param list tasks: **Task** instances to be ran
+  """
+
+  test.output.print_divider(category, True)
+
+  for task in tasks:
+    if task is None:
+      continue
+
+    task.run()
+
+    if task.is_required and task.error:
+      println('\n%s\n' % task.error, ERROR)
+      sys.exit(1)
+
+  println()
+
+
+class Task(object):
+  """
+  Task we can process while running our tests. The runner can return either a
+  message or list of strings for its results.
+  """
+
+  def __init__(self, label, runner, args = None, is_required = True, print_result = True, print_runtime = False):
+    super(Task, self).__init__()
+
+    self.label = label
+    self.runner = runner
+    self.args = args
+    self.is_required = is_required
+    self.print_result = print_result
+    self.print_runtime = print_runtime
+    self.error = None
+
+    self.is_successful = False
+    self.result = None
+
+  def run(self):
+    start_time = time.time()
+    println('  %s...' % self.label, STATUS, NO_NL)
+
+    padding = 50 - len(self.label)
+    println(' ' * padding, NO_NL)
+
+    try:
+      if self.args:
+        self.result = self.runner(*self.args)
+      else:
+        self.result = self.runner()
+
+      self.is_successful = True
+      output_msg = 'done'
+
+      if self.print_result and isinstance(self.result, str):
+        output_msg = self.result
+      elif self.print_runtime:
+        output_msg += ' (%0.1fs)' % (time.time() - start_time)
+
+      println(output_msg, STATUS)
+
+      if self.print_result and isinstance(self.result, (list, tuple)):
+        for line in self.result:
+          println('    %s' % line, STATUS)
+    except Exception as exc:
+      output_msg = str(exc)
+
+      if not output_msg or self.is_required:
+        output_msg = 'failed'
+
+      println(output_msg, ERROR)
+      self.error = exc
diff --git a/test/util.py b/test/util.py
index d19540c..e8af8e1 100644
--- a/test/util.py
+++ b/test/util.py
@@ -12,24 +12,7 @@ Helper functions for our test framework.
   get_prereq - provides the tor version required to run the given target
   get_torrc_entries - provides the torrc entries for a given target
 
-Sets of :class:`~test.util.Task` instances can be ran with
-:func:`~test.util.run_tasks`. Functions that are intended for easy use with
-Tasks are...
-
-::
-
-  Initialization
-  |- check_stem_version - checks our version of stem
-  |- check_tor_version - checks our version of tor
-  |- check_python_version - checks our version of python
-  |- check_cryptography_version - checks our version of cryptography
-  |- check_pynacl_version - checks our version of pynacl
-  |- check_pyflakes_version - checks our version of pyflakes
-  |- check_pycodestyle_version - checks our version of pycodestyle
-  |- clean_orphaned_pyc - removes any *.pyc without a corresponding *.py
-  +- check_for_unused_tests - checks to see if any tests are missing from our settings
-
-Lastly, this module provides generally useful test helpers...
+This module also provides generally useful test helpers...
 
 ::
 
@@ -58,8 +41,6 @@ import hashlib
 import itertools
 import re
 import os
-import sys
-import time
 
 import stem
 import stem.prereq
@@ -70,8 +51,6 @@ import stem.version
 
 import test.output
 
-from test.output import STATUS, ERROR, NO_NL, println
-
 CONFIG = stem.util.conf.config_dict('test', {
   'target.prereq': {},
   'target.torrc': {},
@@ -104,8 +83,8 @@ Target = stem.util.enum.UppercaseEnum(
   'RUN_ALL',
 )
 
-TOR_VERSION = None
 RAN_TESTS = []
+TOR_VERSION = None
 
 # We make some paths relative to stem's base directory (the one above us)
 # rather than the process' cwd. This doesn't end with a slash.
@@ -308,116 +287,6 @@ def require_version(req_version):
   return require(lambda: tor_version() >= req_version, 'requires %s' % req_version)
 
 
-def check_stem_version():
-  return stem.__version__
-
-
-def check_tor_version(tor_path):
-  global TOR_VERSION
-
-  if TOR_VERSION is None:
-    TOR_VERSION = stem.version.get_system_tor_version(tor_path)
-
-  return str(TOR_VERSION).split()[0]
-
-
-def check_python_version():
-  return '.'.join(map(str, sys.version_info[:3]))
-
-
-def check_cryptography_version():
-  if stem.prereq.is_crypto_available():
-    import cryptography
-    return cryptography.__version__
-  else:
-    return 'missing'
-
-
-def check_pynacl_version():
-  if stem.prereq._is_pynacl_available():
-    import nacl
-    return nacl.__version__
-  else:
-    return 'missing'
-
-
-def check_mock_version():
-  if stem.prereq.is_mock_available():
-    try:
-      import unittest.mock as mock
-    except ImportError:
-      import mock
-
-    return mock.__version__
-  else:
-    return 'missing'
-
-
-def check_pyflakes_version():
-  try:
-    import pyflakes
-    return pyflakes.__version__
-  except ImportError:
-    return 'missing'
-
-
-def check_pycodestyle_version():
-  if stem.util.test_tools._module_exists('pycodestyle'):
-    import pycodestyle
-  elif stem.util.test_tools._module_exists('pep8'):
-    import pep8 as pycodestyle
-  else:
-    return 'missing'
-
-  return pycodestyle.__version__
-
-
-def clean_orphaned_pyc(paths):
-  """
-  Deletes any file with a *.pyc extention without a corresponding *.py.
-
-  :param list paths: paths to search for orphaned pyc files
-  """
-
-  return ['removed %s' % path for path in stem.util.test_tools.clean_orphaned_pyc(paths)]
-
-
-def check_for_unused_tests(paths):
-  """
-  The 'test.unit_tests' and 'test.integ_tests' in our settings.cfg defines the
-  tests that we run. We do it this way so that we can control the order in
-  which our tests are run but there's a disadvantage: when we add new test
-  modules we can easily forget to add it there.
-
-  Checking to see if we have any unittest.TestCase subclasses not covered by
-  our settings.
-
-  :param list paths: paths to search for unused tests
-  """
-
-  unused_tests = []
-
-  for path in paths:
-    for py_path in stem.util.system.files_with_suffix(path, '.py'):
-      if _is_test_data(py_path):
-        continue
-
-      with open(py_path) as f:
-        file_contents = f.read()
-
-      test_match = re.search('^class (\S*)\(unittest.TestCase\):$', file_contents, re.MULTILINE)
-
-      if test_match:
-        class_name = test_match.groups()[0]
-        module_name = py_path.replace(os.path.sep, '.')[len(STEM_BASE) + 1:-3] + '.' + class_name
-
-        if not (module_name in CONFIG['test.unit_tests'] or module_name in CONFIG['test.integ_tests']):
-          unused_tests.append(module_name)
-
-  if unused_tests:
-    raise ValueError('Test modules are missing from our test/settings.cfg:\n%s' % '\n'.join(unused_tests))
-
-
 def register_new_capability(capability_type, msg, suppression_token = None):
   """
   Register new capability found during the tests.
@@ -435,35 +304,6 @@ def register_new_capability(capability_type, msg, suppression_token = None):
       NEW_CAPABILITIES_SUPPRESSION_TOKENS.add(suppression_token)
 
 
-def _is_test_data(path):
-  return os.path.normpath(CONFIG['integ.test_directory']) in path
-
-
-def run_tasks(category, *tasks):
-  """
-  Runs a series of :class:`test.util.Task` instances. This simply prints 'done'
-  or 'failed' for each unless we fail one that is marked as being required. If
-  that happens then we print its error message and call sys.exit().
-
-  :param str category: label for the series of tasks
-  :param list tasks: **Task** instances to be ran
-  """
-
-  test.output.print_divider(category, True)
-
-  for task in tasks:
-    if task is None:
-      continue
-
-    task.run()
-
-    if task.is_required and task.error:
-      println('\n%s\n' % task.error, ERROR)
-      sys.exit(1)
-
-  println()
-
-
 def get_all_combinations(attr, include_empty = False):
   """
   Provides an iterator for all combinations of a set of attributes. For
@@ -552,77 +392,22 @@ def get_protocolinfo_response(**attributes):
   return protocolinfo_response
 
 
-def tor_version():
+def tor_version(tor_path = None):
   """
   Provides the version of tor we're testing against.
 
+  :param str tor_path: location of tor executable to cehck the version of
+
   :returns: :class:`~stem.version.Version` of tor invoked by our integration
     tests
-
-  :raise: **ValueError** if :func:`~test.util.check_tor_version` isn't called
-    first
   """
 
-  if TOR_VERSION is None:
-    raise ValueError('BUG: check_tor_version() must be called before tor_version()')
-
-  return TOR_VERSION
-
-
-class Task(object):
-  """
-  Task we can process while running our tests. The runner can return either a
-  message or list of strings for its results.
-  """
-
-  def __init__(self, label, runner, args = None, is_required = True, print_result = True, print_runtime = False):
-    super(Task, self).__init__()
-
-    self.label = label
-    self.runner = runner
-    self.args = args
-    self.is_required = is_required
-    self.print_result = print_result
-    self.print_runtime = print_runtime
-    self.error = None
-
-    self.is_successful = False
-    self.result = None
-
-  def run(self):
-    start_time = time.time()
-    println('  %s...' % self.label, STATUS, NO_NL)
-
-    padding = 50 - len(self.label)
-    println(' ' * padding, NO_NL)
-
-    try:
-      if self.args:
-        self.result = self.runner(*self.args)
-      else:
-        self.result = self.runner()
-
-      self.is_successful = True
-      output_msg = 'done'
-
-      if self.print_result and isinstance(self.result, str):
-        output_msg = self.result
-      elif self.print_runtime:
-        output_msg += ' (%0.1fs)' % (time.time() - start_time)
-
-      println(output_msg, STATUS)
-
-      if self.print_result and isinstance(self.result, (list, tuple)):
-        for line in self.result:
-          println('    %s' % line, STATUS)
-    except Exception as exc:
-      output_msg = str(exc)
+  global TOR_VERSION
 
-      if not output_msg or self.is_required:
-        output_msg = 'failed'
+  if TOR_VERSION is None or tor_path:
+    TOR_VERSION = stem.version.get_system_tor_version(tor_path)
 
-      println(output_msg, ERROR)
-      self.error = exc
+  return TOR_VERSION
 
 
 import test.runner  # needs to be imported at the end to avoid a circular dependency



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