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Metadata-Version: 1.1
Name: testing.common.database
Version: 2.0.0
Summary: utilities for testing.* packages
Home-page: https://github.com/tk0miya/testing.common.database
Author: Takeshi Komiya
Author-email: i.tkomiya at gmail.com
License: Apache License 2.0
Description: About
        =====
        ``testing.common.database`` is utilities for testing.* package.
        
        .. image:: https://travis-ci.org/tk0miya/testing.common.database.svg?branch=master
           :target: https://travis-ci.org/tk0miya/testing.common.database
        
        .. image:: https://codeclimate.com/github/tk0miya/testing.common.database/badges/gpa.svg
           :target: https://codeclimate.com/github/tk0miya/testing.common.database
        
        
        Install
        =======
        Use pip::
        
           $ pip install testing.common.database
        
        
        Helpers
        =======
        class Database(object):
        
            ``Database`` is a base class for database testing packages.
            To create your database testing class, inherit this class and override methods below.
        
            def initialize(self):
        
                Handler for initialize database object.
        
            def get_data_directory(self):
        
                Path to data directory of your databse.
        
                Example::
        
                  def get_data_directory(self):
                      return os.path.join(self.base_dir, 'data')
        
            def initialize_database(self):
        
                Handler to initialize your database.
        
                Example::
        
                  def initialize_database(self):
                     if not os.path.exists(os.path.join(self.base_dir, 'data', 'PG_VERSION')):
                         args = ([self.initdb, '-D', os.path.join(self.base_dir, 'data'), '--lc-messages=C'] +
                                 self.settings['initdb_args'].split())
        
                         try:
                             p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
                             output, err = p.communicate()
                             if p.returncode != 0:
                                 raise RuntimeError("initdb failed: %r" % err)
                         except OSError as exc:
                             raise RuntimeError("failed to spawn initdb: %s" % exc)
        
            def get_server_commandline(self):
        
                Command line to invoke your database server.
        
                Example::
        
                  def get_server_commandline(self):
                      return (['postgres',
                               '-p', str(self.settings['port']),
                               '-D', os.path.join(self.base_dir, 'data'),
                               '-k', os.path.join(self.base_dir, 'tmp')] +
                              self.settings['postgres_args'].split())
        
            def prestart(self):
        
                Handler called before invoking your database server.
        
            def poststart(self):
        
                Hander called after invoking your database server.
        
            def is_server_available(self):
        
                Methods check your database server available.
                The ``Database`` class uses this method to check the server boots up.
        
                Example::
        
                  try:
                      with closing(pg8000.connect(**self.dsn(database='template1'))):
                          pass
                  except pg8000.Error:
                      return False
                  else:
                      return True
        
            def is_alive(self):
        
                Methods check the database server is alive.
        
            @property
            def server_pid(self):
        
                Process ID of the database server.
        
        
        class DatabaseFactory(object):
        
            ``DatabaseFactory`` is a factory class for the database class.
            To create your database factory class, inherit this class and set ``target_class`` variable::
        
              class PostgresqlFactory(DatabaseFactory):
                  target_class = Postgresql
        
            The factory class should work like a ``target_class``::
        
              # The factory class generates like a ``target_class``, in this case, generates ``Postgresql`` class
              Postgresql = PostgresqlFactory()
        
              # The generated class works same as ``target_class``
              with Postgresql() as pgsql:
                  #
                  # do any tests using the database ...
                  #
        
            It can bypass parameters to the ``target_class`` on every instantiation::
        
              Postgresql = PostgresqlFactory(copy_data_from='/path/to/database')
        
              with Postgresql() as pgsql:
                  #
                  # Test with ``copy_data_from`` parameter :-)
                  #
        
            Also, it is able to cache the database generated at ``Database.initialize_database()``
            with ``cache_initialized_db`` parameter.
            It avoids running database initialization on every tests::
        
              # Initialize database once
              Postgresql = PostgresqlFactory(cache_initialized_db=True)
        
              with Postgresql() as pgsql:
                  # copy cached database for this test.
        
            If you want to fixtures to the database, use ``on_initialized`` parameter::
        
              def handler(pgsql):
                  # inserting fixtures
        
              # Initialize database once, and call ``on_initialized`` handler
              Postgresql = PostgresqlFactory(cache_initialized_db=True,
                                             on_initialized=handler)
        
        class SkipIfNotInstalledDecorator(object):
        
            Generates decorator that skips the testcase if database command not found.
            To create decorator, inherit this class and set ``name`` variable and override ``search_server()`` method.
        
            Example::
        
              class PostgresqlSkipIfNotInstalledDecorator(SkipIfNotInstalledDecorator):
                  name = 'PostgreSQL'
        
                  def search_server(self):
                      find_program('postgres', ['bin'])  # raise exception if not found
        
        
              skipIfNotFound = skipIfNotInstalled = PostgresqlSkipIfNotInstalledDecorator()
        
              @skipIfNotFound
              def test():
                  # testcase
        
        def get_unused_port():
        
            Get free TCP port.
        
        def get_path_of(name):
        
            Searchs command from search paths. It works like ``which`` command.
        
        
        Requirements
        ============
        * Python 2.6, 2.7, 3.2, 3.3, 3.4, 3.5
        
        License
        =======
        Apache License 2.0
        
        
        History
        =======
        
        2.0.0 (2016-08-20)
        -------------------
        * Use subprocess.Popen() instead of fork & exec
        * Support windows platform (experimental)
        * #4: Add boot_timeout parameter
        * Fix bugs:
        
          - Fix syntax errors for Python3
          - Show error messages if rescue from GC failed (ref: #1)
        
        1.1.0 (2016-02-05)
        -------------------
        * Add Database#server_pid to get pid of the database server
        * Add Database#is_alive() to check server is alive
        * Define BOOT_TIMEOUT as constant
        * Fix AttributeError if any exceptions are raised in bootstrap
        
        1.0.0 (2016-02-01)
        -------------------
        * Initial release
        
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3.2
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Topic :: Database
Classifier: Topic :: Software Development
Classifier: Topic :: Software Development :: Testing