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Tests for Twisted plugin system.
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Tests which verify the behavior of the current, active Twisted plugins
directory.
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Remove the plugins B{droping.cache} file.
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cache, and calls it 2 other times. It's supposed to ensure that the
plugin system behaves correctly no matter what the state of the cache
is.
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Check that the cache returned by L{plugin.getCache} hold the plugin
B{testplugin}, and that this plugin has the properties we expect:
provide L{TestPlugin}, has the good name and description, and can be
loaded successfully.
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L{CachedPlugin} has a helpful C{repr} which contains relevant
information about it.
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L{plugin.getPlugins} should return the list of plugins matching the
specified interface (here, L{ITestPlugin2}), and these plugins
should be instances of classes with a C{test} method, to be sure
L{plugin.getPlugins} load classes correctly.
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Check that L{plugin.getPlugins} is able to detect plugins added at
runtime.
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Check that if the content of a plugin change, L{plugin.getPlugins} is
able to detect the new plugins added.
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Check that when a dropin file is removed, L{plugin.getPlugins} doesn't
return it anymore.
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Test that getCache skips over any entries in a plugin package's
C{__path__} which do not exist.
r� N)r! r� r? r �existsr, �__path__�appendrm r ru r r[ rv r@ )r- r r� r r r �test_nonexistentPathEntry s "z%PluginTests.test_nonexistentPathEntryc C s� t | �� �}| �|�� � |�� |�d�j}| jj� |� zt
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Test that getCache skips over any entries in a plugin package's
C{__path__} which refer to children of paths which are not directories.
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The C{dropin.cache} file may not be writable: the cache should still be
attainable, but an error should be logged to show that the cache
couldn't be updated.
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__path__.extend(pluginPackagePaths(__name__))
__all__ = []
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@provider(IPlugin, ITestPlugin)
class {}:
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Create a plugindummy package.
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These tests verify things about the plugin system without actually
interacting with the deployed 'twisted.plugins' package, instead creating a
temporary package.
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Create a complex environment with multiple entries on sys.path, akin to
a developer's environment who has a development (trunk) checkout of
Twisted, a system installed version of Twisted (for their operating
system's tools) and a project which provides Twisted plugins.
N� system_path�development_path�application_path�systemT�plugindummy_builtin�dev�appF�plugindummy_appc S � g | ]}|j �qS r �r �rV �xr r r rX � � z-DeveloperSetupTests.setUp.<locals>.<listcomp>r� r^ rK zplugindummy_builtin.pyi� rr i� ) r r � savedPathr r r r r! �fakeRootr# r$ �
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Lock the system directories, as if they were unwritable by this user.
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Unlock the system directories, as if they were writable by this user.
i� Nr� r4 r r r � unlockSystem� r� z DeveloperSetupTests.unlockSystemc C s( ddl }tt�t|j��}dd� |D �S )zl
Get all the plugins loadable from our dummy package, and return their
short names.
r Nc S r� r �r )rV �plugr r r rX � r� z5DeveloperSetupTests.getAllPlugins.<locals>.<listcomp>)�plugindummy.pluginsrm r ru r r^ )r- r� r� r r r r� � s z!DeveloperSetupTests.getAllPluginsc C s. | � � tj�dd� | j| j| jfD �� dS )zc
Change the environment to what it should be just as the test is
starting.
c S r� r r� r� r r r rX � r� z8DeveloperSetupTests.resetEnvironment.<locals>.<listcomp>N)�unsetEnvironmentr r r� r� r� r� r4 r r r r� � s &z$DeveloperSetupTests.resetEnvironmentc C s2 t � tj�� tj�| j� | jtjdd�< dS )zh
Change the Python environment back to what it was before the test was
started.
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Reset the Python environment to what it was before this test ran, and
restore permissions on files which were marked read-only so that the
directory may be cleanly cleaned up.
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Plugins added in the development path should be loadable, even when
the (now non-importable) system path contains its own idea of the
list of plugins for a package. Inversely, plugins added in the
system path should not be available.
r� r� r� N)�ranger� �sortr[ )r- r� rx r r r �"test_developmentPluginAvailability� s
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Verify that if a stale .pyc file on the PYTHONPATH is replaced by a
fresh .py file, the plugins in the new .py are picked up rather than
the stale .pyc, even if the .pyc is still around.
zstale.py�onei� z stale.pycT)�legacy�quietr� �twoN)r� r$ r& r� r� r? r� r r( �dict�
compileall� compile_dirr@ r� r\ r� r )r- �mypathr� �pyc�extrar r r � test_freshPyReplacesStalePyc� s
z0DeveloperSetupTests.test_freshPyReplacesStalePycc C s� | � � | j�d��td�� | �� tj�| j j� g }t
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Verify that a failure to write the dropin.cache file on a read-only
path will not affect the list of plugins returned.
Note: this test should pass on both Linux and Windows, but may not
provide useful coverage on Windows due to the different meaning of
"read-only directory".
z newstuff.pyr� r� r� N)r� r� r$ r& r� r� r r r@ r� r r� r� r r\ r� r� rB r� r r� )r- r� r� r� r r r � test_newPluginsOnReadOnlyPath s*
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Tests for the behavior of the plugin system when there are multiple
installed copies of the package containing the plugins being loaded.
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Save the elements of C{sys.path} and the items of C{sys.modules}.
N)r r r r r r r4 r r r r. J s zAdjacentPackageTests.setUpc C r/ r0 r1 r4 r r r r5 Q r6 z AdjacentPackageTests.tearDownc C sn |� |�}|� d�}|�� |� d��d� |� d�}|�� |� d��t� |� |d �}|�t|�� |S )a`
Create a directory containing a Python package named I{dummy} with a
I{plugins} subpackage.
@type root: L{FilePath}
@param root: The directory in which to create the hierarchy.
@type name: C{str}
@param name: The name of the directory to create which will contain
the package.
@type pluginName: C{str}
@param pluginName: The name of a module to create in the
I{dummy.plugins} package.
@rtype: L{FilePath}
@return: The directory which was created to contain the I{dummy}
package.
�dummyr r r^ r� )r$ �makedirsr& r� r� )r- r" ra �
pluginName� directoryr% r^ r� r r r �createDummyPackageY s
z'AdjacentPackageTests.createDummyPackagec C s� t | �� �}|�� | �|dd�}| �|dd�}tj�|j� tj�|j� ddl}tt �
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Only plugins from the first package in sys.path should be returned by
getPlugins in the case where there are two Python packages by the same
name installed, each with a plugin module by a single name.
�first�
someplugin�secondr Nc S r� r r� rU r r r rX � r� zWAdjacentPackageTests.test_hiddenPackageSamePluginModuleNameObscured.<locals>.<listcomp>�r r! r� r� r r r� �
dummy.pluginsrm r ru r r^ r[ �r- r" �firstDirectory�secondDirectoryr� r^ r r r �.test_hiddenPackageSamePluginModuleNameObscuredx � zCAdjacentPackageTests.test_hiddenPackageSamePluginModuleNameObscuredc C s� t | �� �}|�� | �|dd�}| �|dd�}tj�|j� tj�|j� ddl}tt �
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Plugins from the first package in sys.path should be returned by
getPlugins in the case where there are two Python packages by the same
name installed, each with a plugin module by a different name.
r� �
thispluginr� �
thatpluginr Nc S r� r r� rU r r r rX � r� z\AdjacentPackageTests.test_hiddenPackageDifferentPluginModuleNameObscured.<locals>.<listcomp>r� r� r r r �3test_hiddenPackageDifferentPluginModuleNameObscured� r� zHAdjacentPackageTests.test_hiddenPackageDifferentPluginModuleNameObscuredN) r r r r r. r5 r� r� r� r r r r r� D s r� c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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Tests for L{plugin.pluginPackagePaths} which constructs search paths for
plugin packages.
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Save the elements of C{sys.path}.
N)r r r r4 r r r r. � rM zPackagePathTests.setUpc C s | j tjdd�< dS )z<
Restore C{sys.path} to its original value.
N)r r r r4 r r r r5 � rM zPackagePathTests.tearDownc C sT t d�}t d�}|j|jgt_| �t�d�|�d��d�j|�d��d�jg� dS )z�
L{plugin.pluginPackagePaths} should return a list containing each
directory in C{sys.path} with a suffix based on the supplied package
name.
�foo�bar�
dummy.pluginsr� r^ N)r r r r[ r �pluginPackagePathsr$ )r- r� r� r r r �test_pluginDirectories� s ��z'PackagePathTests.test_pluginDirectoriesc C s� t | �� �}|�d��d��d�}|�� |�d��d� |�d�j|�d�jgt_| �t� d�|�d��d��d�jg� dS ) a�
L{plugin.pluginPackagePaths} should exclude directories which are
Python packages. The only allowed plugin package (the only one
associated with a I{dummy} package which Python will allow to be
imported) will already be known to the caller of
L{plugin.pluginPackagePaths} and will most commonly already be in
the C{__path__} they are about to mutate.
r� r� r^ r r r� r� N)
r r! r$ r� r& r r r[ r r� )r- r" r� r r r �test_pluginPackagesExcluded� s �z,PackagePathTests.test_pluginPackagesExcludedN)r r r r r. r5 r� r� r r r r r� � s r� )"r r� rB rQ r? r r� � importlibr r� �typingr �zope.interfacer �twistedr �twisted.python.filepathr �twisted.python.logr r r �
twisted.trialr
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