configurationengine/source/plugins/plugin_utils.py
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     1 #
       
     2 # Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     3 # All rights reserved.
       
     4 # This component and the accompanying materials are made available
       
     5 # under the terms of "Eclipse Public License v1.0"
       
     6 # which accompanies this distribution, and is available
       
     7 # at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 #
       
     9 # Initial Contributors:
       
    10 # Nokia Corporation - initial contribution.
       
    11 #
       
    12 # Contributors:
       
    13 #
       
    14 # Description:
       
    15 #
       
    16 
       
    17 import sys, os, unittest, re
       
    18 import build_egg_info
       
    19 
       
    20 # Path to the directory where this file is located
       
    21 ROOT_PATH = os.path.dirname(os.path.abspath(__file__))
       
    22 
       
    23 # Path to the source/ directory
       
    24 SOURCE_ROOT = os.path.normpath(os.path.join(ROOT_PATH, '..'))
       
    25 assert os.path.split(SOURCE_ROOT)[1] == 'source'
       
    26 
       
    27 # Path to the source/plugins directory
       
    28 PLUGIN_SOURCE_ROOT = os.path.normpath(os.path.join(SOURCE_ROOT, 'plugins'))
       
    29 assert os.path.isdir(PLUGIN_SOURCE_ROOT)
       
    30 
       
    31 def plugin_test_init(root_path, plugin_source_relative_path='../..'):
       
    32     """
       
    33     Initialize things so that plug-in unit tests can be run.
       
    34     
       
    35     @param root_path: Path of the __init__.py file calling this function. 
       
    36     @param plugin_source_relative_path: Path to the plug-in's source root relative
       
    37         to root_path. Usually this should be '../..', since this function is intended
       
    38         to be called from a plug-in's tests/__init__.py file.
       
    39     
       
    40     """
       
    41     # Add paths so that the unit tests work
       
    42     # -------------------------------------
       
    43     extra_paths = [
       
    44         # For module 'cone'
       
    45         SOURCE_ROOT,
       
    46         
       
    47         # For module 'testautomation'
       
    48         os.path.join(SOURCE_ROOT, 'testautomation'),
       
    49         
       
    50         # For the plug-in module.
       
    51         # Since the method is expected to be called from e.g.
       
    52         # source/plugins/ConeSomePlugin/someplugin/tests/__init__.py, this will then be
       
    53         # source/plugins/ConeSomePlugin, in which case the module 'someplugin' can be
       
    54         # imported
       
    55         os.path.join(root_path, plugin_source_relative_path)
       
    56     ]
       
    57     for p in extra_paths:
       
    58         p = os.path.normpath(p)
       
    59         if p not in sys.path: sys.path.append(p)
       
    60     
       
    61     # Generate egg-info for the plug-in.
       
    62     # The egg-info needs to be up-to-date, or the plug-in framework will not be able
       
    63     # to find the plug-in's ImplML reader classes
       
    64     plugin_path = os.path.normpath(os.path.join(root_path, plugin_source_relative_path))
       
    65     assert 'setup.py' in os.listdir(plugin_path), "Path '%s' does not contain 'setup.py" % plugin_path
       
    66     build_egg_info.generate_egg_info(plugin_path)
       
    67 
       
    68 def integration_test_init(root_path):
       
    69     """
       
    70     Initialize things so that integration tests can be run.
       
    71     
       
    72     This function is intended to be called from a sub-package's integration-test/__init__.py file.
       
    73     @param root_path: Path of the __init__.py file calling this function.
       
    74     """
       
    75     # Add paths so that the unit tests work
       
    76     # -------------------------------------
       
    77     extra_paths = [
       
    78         # For module 'cone' (may be needed in some tests for e.g. asserts)
       
    79         SOURCE_ROOT,
       
    80         
       
    81         # For module 'testautomation'
       
    82         os.path.join(SOURCE_ROOT, 'testautomation'),
       
    83     ]
       
    84     for p in extra_paths:
       
    85         p = os.path.normpath(p)
       
    86         if p not in sys.path: sys.path.append(p)
       
    87     
       
    88     # Collect plug-in source paths (common + current)
       
    89     temp = []
       
    90     temp += [path for path, _ in find_plugin_sources(os.path.join(PLUGIN_SOURCE_ROOT, 'common'))]
       
    91     temp += [path for path, _ in find_plugin_sources(os.path.normpath(os.path.join(root_path, '..')))]
       
    92     plugin_paths = []
       
    93     for p in temp:
       
    94         if p not in plugin_paths: plugin_paths.append(p)
       
    95     
       
    96     # Add things to PYTHONPATH so that running cone_tool.py works
       
    97     paths = []
       
    98     paths.append(SOURCE_ROOT) # For module 'cone'
       
    99     paths.extend(plugin_paths)
       
   100     os.environ['PYTHONPATH'] = os.environ.get('PYTHONPATH', '') + ';' + ';'.join(paths)
       
   101     
       
   102     # Generate egg-info for the plug-ins.
       
   103     # The egg-info needs to be up-to-date, or the plug-in framework will not be able
       
   104     # to find the plug-in's ImplML reader classes
       
   105     for p in plugin_paths:
       
   106         assert 'setup.py' in os.listdir(p), "Path '%s' does not contain 'setup.py" % p
       
   107         build_egg_info.generate_egg_info(p)
       
   108 
       
   109 def init_all():
       
   110     """
       
   111     Add all plug-ins to sys.path and PYTHONPATH so that running all
       
   112     plug-in unit tests and integration tests work.
       
   113     """
       
   114     # Find all plug-in source directories
       
   115     plugin_paths = []
       
   116     temp = find_all_plugin_sources(os.path.join(PLUGIN_SOURCE_ROOT))
       
   117     for package_name, sources in temp.iteritems():
       
   118         for path, modname in sources:
       
   119             plugin_paths.append(path)
       
   120     
       
   121     # Add paths so that the unit tests work
       
   122     # -------------------------------------
       
   123     extra_paths = [
       
   124         # For module 'cone' (may be needed in some tests for e.g. asserts)
       
   125         SOURCE_ROOT,
       
   126         
       
   127         # For module 'testautomation'
       
   128         os.path.join(SOURCE_ROOT, 'testautomation'),
       
   129     ] + plugin_paths
       
   130     for p in extra_paths:
       
   131         p = os.path.normpath(p)
       
   132         if p not in sys.path: sys.path.append(p)
       
   133     
       
   134     # Add things to PYTHONPATH so that running cone_tool.py works
       
   135     paths = []
       
   136     paths.append(SOURCE_ROOT) # For module 'cone'
       
   137     paths.extend(plugin_paths)
       
   138     os.environ['PYTHONPATH'] = os.environ.get('PYTHONPATH', '') + ';' + ';'.join(paths)
       
   139     
       
   140     # Generate egg-info for the plug-ins.
       
   141     # The egg-info needs to be up-to-date, or the plug-in framework will not be able
       
   142     # to find the plug-in's ImplML reader classes
       
   143     for p in plugin_paths:
       
   144         assert 'setup.py' in os.listdir(p), "Path '%s' does not contain 'setup.py" % p
       
   145         build_egg_info.generate_egg_info(p)
       
   146 
       
   147 def collect_test_suite_from_dir(root_path):
       
   148     """
       
   149     Return a test suite containing all tests in 'unittest_*.py' files under the given directory.
       
   150     """
       
   151     # Find all unittest_*.py files in the folder
       
   152     test_modules = filter(lambda name: re.match(r'^unittest_.*\.py$', name) != None, os.listdir(root_path))
       
   153     # Strip .py endings
       
   154     test_modules = map(lambda name: name[:-3], test_modules)
       
   155     
       
   156     # Add the root path as the first one in sys.path, so that
       
   157     # __import__() checks that first when attempting to import a module 
       
   158     sys.path.insert(0, root_path)
       
   159     
       
   160     try:
       
   161         suite = unittest.TestSuite()
       
   162         for test_module in test_modules:
       
   163             # Load the test module dynamically and add it to the test suite
       
   164             module = __import__(test_module)
       
   165             suite.addTests(unittest.TestLoader().loadTestsFromModule(module))
       
   166         return suite
       
   167     finally:
       
   168         # Remove root_path from sys.path
       
   169         del sys.path[0]
       
   170 
       
   171 def collect_suite_from_source_list(paths_and_modnames):
       
   172     suite = unittest.TestSuite()
       
   173     
       
   174     # Add the source paths to sys.path
       
   175     for path, modname in paths_and_modnames:
       
   176         if path not in sys.path:
       
   177             sys.path.append(path)
       
   178     
       
   179     # Import the tests in a separate loop, because otherwise the ImplML reader classes
       
   180     # could be loaded before all plug-ins are in sys.path
       
   181     for path, modname in paths_and_modnames:
       
   182         try:
       
   183             m = __import__(modname + '.tests')
       
   184             suite.addTests(m.tests.collect_suite())
       
   185         except ImportError:
       
   186             print "Tests for '%s' not added, no 'tests' module found" % path
       
   187     
       
   188     return suite
       
   189 
       
   190 def get_plugin_module_name(plugin_src_path):
       
   191     """
       
   192     Return the name of the plug-in's module under given plug-in source path.
       
   193     
       
   194     >>> get_tests_module('source/plugins/common/ConeContentPlugin')
       
   195     'contentplugin'
       
   196     >>> get_tests_module('foo')
       
   197     None
       
   198     """
       
   199     if not os.path.isdir(plugin_src_path):
       
   200         return None
       
   201     
       
   202     for name in os.listdir(plugin_src_path):
       
   203         path = os.path.join(plugin_src_path, name)
       
   204         if os.path.isdir(path) and '__init__.py' in os.listdir(path):
       
   205             return name
       
   206     return None
       
   207 
       
   208 def find_plugin_sources(subpackage_root_path):
       
   209     """
       
   210     Return ConE plug-in source directories from the given path.
       
   211     
       
   212     All sub-directories in subpackage_root_path of the form Cone*Plugin/ containing
       
   213     a sub-directory that is a python module are returned.
       
   214     
       
   215     @param path: The directory from where to find the entries.
       
   216     @return: A list of tuples, each containing (<source_dir>, <module_name>).
       
   217     """
       
   218     pattern = re.compile(r'^Cone.*Plugin$')
       
   219     
       
   220     # Collect a list of plug-in source paths and plug-in module names
       
   221     result = []
       
   222     for name in os.listdir(subpackage_root_path):
       
   223         path = os.path.join(subpackage_root_path, name)
       
   224         if pattern.match(name) is not None:
       
   225             modname = get_plugin_module_name(path)
       
   226             if modname is not None:
       
   227                 result.append((path, modname))
       
   228     return result
       
   229 
       
   230 def find_all_plugin_sources(plugins_root_path):
       
   231     """
       
   232     Return all ConE plug-in source directories from the plugins/ root
       
   233     directory.
       
   234     @return: A dictionary containing the output of find_plugin_sources() by
       
   235         plug-in sub-packages.
       
   236     >>> find_all_plugin_sources('C:/work/cone-trunk/source/plugins')
       
   237     {'common': [('C:/work/cone-trunk/source/plugins/common/ConeContentPlugin', 'contentplugin'),
       
   238                 ('C:/work/cone-trunk/source/plugins/common/ConeTemplatePlugin', 'templatemlplugin')],
       
   239      'example': [('C:/work/cone-trunk/source/plugins/example/ConeExamplePlugin', 'examplemlplugin')]}
       
   240     """
       
   241     result = {}
       
   242     for name in os.listdir(plugins_root_path):
       
   243         path = os.path.join(plugins_root_path, name)
       
   244         if os.path.isdir(path):
       
   245             sources = find_plugin_sources(path)
       
   246             if sources: result[name] = sources
       
   247     return result
       
   248 
       
   249 def find_plugin_package_subpaths(subpath, package_name=None):
       
   250     """
       
   251     Return a list of plug-in package sub-paths based on the given plug-in package name.
       
   252     
       
   253     The returned list always contains the sub-path for common plug-ins, and
       
   254     additionally for an extra plug-in package based on the given package name.
       
   255     
       
   256     This function can be used to find specifically named files or directories
       
   257     under the plug-in paths. E.g. find all 'integration-test' directories:
       
   258     
       
   259     >>> find_plugin_package_subpaths('integration-test', 'symbian')
       
   260     [('common',  'C:\\cone\\trunk\\sources\\plugins\\common\\integration-test'),
       
   261      ('symbian', 'C:\\cone\\trunk\\sources\\plugins\\symbian\\integration-test')]
       
   262     
       
   263     @param package_name: Name of the extra plug-in package. Can be None, '',
       
   264         'common' or an existing plug-in package.
       
   265     @return: List of tuples (package_name, subpath).
       
   266     
       
   267     @raise ValueError: The given package_name was invalid.
       
   268     """
       
   269     result = []
       
   270     
       
   271     def add(package_name):
       
   272         package_dir = os.path.join(PLUGIN_SOURCE_ROOT, package_name)
       
   273         
       
   274         if not os.path.exists(package_dir):
       
   275             raise ValueError("Invalid plug-in package name: '%s'" % package_name)
       
   276         
       
   277         path = os.path.normpath(os.path.join(package_dir, subpath))
       
   278         if os.path.exists(path):
       
   279             result.append((package_name, path))
       
   280     
       
   281     add('common')
       
   282     if package_name not in (None, '', 'common'):
       
   283         add(package_name)
       
   284     
       
   285     return result
       
   286     
       
   287 
       
   288 def find_plugin_sources_by_package(package_name=None):
       
   289     """
       
   290     Return a list of plug-in source paths based on the given plug-in package name.
       
   291     
       
   292     The returned list always contains sources of common plug-ins, and
       
   293     additionally extra plug-in sources based on the given package name.
       
   294     
       
   295     @param package_name: Name of the extra plug-in package. Can be None, '',
       
   296         'common' or an existing plug-in package.
       
   297     @raise ValueError: The given package_name was invalid.
       
   298     """
       
   299     result = []
       
   300     
       
   301     # Find all plug-in sources
       
   302     sources = find_all_plugin_sources(PLUGIN_SOURCE_ROOT)
       
   303     
       
   304     # Always return common plug-ins
       
   305     if 'common' in sources:
       
   306         for path, modname in sources['common']:
       
   307             result.append(path)
       
   308     
       
   309     # Return extra plug-ins if necessary
       
   310     if package_name not in (None, '', 'common'):
       
   311         if package_name not in sources:
       
   312             raise ValueError("Invalid plug-in package name: '%s'" % package_name)
       
   313         else:
       
   314             for path, modname in sources[package_name]:
       
   315                 result.append(path)
       
   316     
       
   317     return result