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openlp/tests/functional/openlp_core/common/test_common.py

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# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2019 OpenLP Developers #
# --------------------------------------------------------------------------- #
# This program is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License as published by the Free #
# Software Foundation; version 2 of the License. #
# #
# This program is distributed in the hope that it will be useful, but WITHOUT #
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
# more details. #
# #
# You should have received a copy of the GNU General Public License along #
# with this program; if not, write to the Free Software Foundation, Inc., 59 #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
###############################################################################
"""
Functional tests to test the AppLocation class and related methods.
"""
from unittest import TestCase
from unittest.mock import MagicMock, call, patch
from openlp.core.common import clean_button_text, de_hump, extension_loader, is_linux, is_macosx, is_win, \
normalize_str, path_to_module, trace_error_handler
from openlp.core.common.path import Path
class TestCommonFunctions(TestCase):
"""
A test suite to test out various functions in the openlp.core.common module.
"""
def test_extension_loader_no_files_found(self):
"""
Test the `extension_loader` function when no files are found
"""
# GIVEN: A mocked `Path.glob` method which does not match any files
with patch('openlp.core.common.applocation.AppLocation.get_directory',
return_value=Path('/', 'app', 'dir', 'openlp')), \
patch.object(Path, 'glob', return_value=[]), \
patch('openlp.core.common.importlib.import_module') as mocked_import_module:
# WHEN: Calling `extension_loader`
extension_loader('glob', ['file2.py', 'file3.py'])
# THEN: `extension_loader` should not try to import any files
assert mocked_import_module.called is False
def test_extension_loader_files_found(self):
"""
Test the `extension_loader` function when it successfully finds and loads some files
"""
# GIVEN: A mocked `Path.glob` method which returns a list of files
with patch('openlp.core.common.applocation.AppLocation.get_directory',
return_value=Path('/', 'app', 'dir', 'openlp')), \
patch.object(Path, 'glob', return_value=[
Path('/', 'app', 'dir', 'openlp', 'import_dir', 'file1.py'),
Path('/', 'app', 'dir', 'openlp', 'import_dir', 'file2.py'),
Path('/', 'app', 'dir', 'openlp', 'import_dir', 'file3.py'),
Path('/', 'app', 'dir', 'openlp', 'import_dir', 'file4.py')]), \
patch('openlp.core.common.importlib.import_module') as mocked_import_module:
# WHEN: Calling `extension_loader` with a list of files to exclude
extension_loader('glob', ['file2.py', 'file3.py'])
# THEN: `extension_loader` should only try to import the files that are matched by the blob, excluding the
# files listed in the `excluded_files` argument
mocked_import_module.assert_has_calls([call('openlp.import_dir.file1'),
call('openlp.import_dir.file4')])
def test_extension_loader_import_error(self):
"""
Test the `extension_loader` function when `SourceFileLoader` raises a `ImportError`
"""
# GIVEN: A mocked `import_module` which raises an `ImportError`
with patch('openlp.core.common.applocation.AppLocation.get_directory',
return_value=Path('/', 'app', 'dir', 'openlp')), \
patch.object(Path, 'glob', return_value=[
Path('/', 'app', 'dir', 'openlp', 'import_dir', 'file1.py')]), \
patch('openlp.core.common.importlib.import_module', side_effect=ImportError()), \
patch('openlp.core.common.log') as mocked_logger:
# WHEN: Calling `extension_loader`
extension_loader('glob')
# THEN: The `ImportError` should be caught and logged
assert mocked_logger.warning.called
def test_extension_loader_os_error(self):
"""
Test the `extension_loader` function when `import_module` raises a `ImportError`
"""
# GIVEN: A mocked `SourceFileLoader` which raises an `OSError`
with patch('openlp.core.common.applocation.AppLocation.get_directory',
return_value=Path('/', 'app', 'dir', 'openlp')), \
patch.object(Path, 'glob', return_value=[
Path('/', 'app', 'dir', 'openlp', 'import_dir', 'file1.py')]), \
patch('openlp.core.common.importlib.import_module', side_effect=OSError()), \
patch('openlp.core.common.log') as mocked_logger:
# WHEN: Calling `extension_loader`
extension_loader('glob')
# THEN: The `OSError` should be caught and logged
assert mocked_logger.warning.called
def test_de_hump_conversion(self):
"""
Test the de_hump function with a class name
"""
# GIVEN: a Class name in Camel Case
string = "MyClass"
# WHEN: we call de_hump
new_string = de_hump(string)
# THEN: the new string should be converted to python format
assert new_string == "my_class", 'The class name should have been converted'
def test_de_hump_static(self):
"""
Test the de_hump function with a python string
"""
# GIVEN: a Class name in Camel Case
string = "my_class"
# WHEN: we call de_hump
new_string = de_hump(string)
# THEN: the new string should be converted to python format
assert new_string == "my_class", 'The class name should have been preserved'
def test_path_to_module(self):
"""
Test `path_to_module` when supplied with a `Path` object
"""
# GIVEN: A `Path` object
path = Path('core', 'ui', 'media', 'vlcplayer.py')
# WHEN: Calling path_to_module with the `Path` object
result = path_to_module(path)
# THEN: path_to_module should return the module name
assert result == 'openlp.core.ui.media.vlcplayer'
def test_trace_error_handler(self):
"""
Test the trace_error_handler() method
"""
# GIVEN: Mocked out objects
with patch('openlp.core.common.traceback') as mocked_traceback:
mocked_traceback.extract_stack.return_value = [('openlp.fake', 56, None, 'trace_error_handler_test')]
mocked_logger = MagicMock()
# WHEN: trace_error_handler() is called
trace_error_handler(mocked_logger)
# THEN: The mocked_logger.error() method should have been called with the correct parameters
mocked_logger.error.assert_called_with(
'OpenLP Error trace\n File openlp.fake at line 56 \n\t called trace_error_handler_test')
def test_is_win(self):
"""
Test the is_win() function
"""
# GIVEN: Mocked out objects
with patch('openlp.core.common.os') as mocked_os, patch('openlp.core.common.sys') as mocked_sys:
# WHEN: The mocked os.name and sys.platform are set to 'nt' and 'win32' repectivly
mocked_os.name = 'nt'
mocked_sys.platform = 'win32'
# THEN: The three platform functions should perform properly
assert is_win() is True, 'is_win() should return True'
assert is_macosx() is False, 'is_macosx() should return False'
assert is_linux() is False, 'is_linux() should return False'
def test_is_macosx(self):
"""
Test the is_macosx() function
"""
# GIVEN: Mocked out objects
with patch('openlp.core.common.os') as mocked_os, patch('openlp.core.common.sys') as mocked_sys:
# WHEN: The mocked os.name and sys.platform are set to 'posix' and 'darwin' repectivly
mocked_os.name = 'posix'
mocked_sys.platform = 'darwin'
# THEN: The three platform functions should perform properly
assert is_macosx() is True, 'is_macosx() should return True'
assert is_win() is False, 'is_win() should return False'
assert is_linux() is False, 'is_linux() should return False'
def test_is_linux(self):
"""
Test the is_linux() function
"""
# GIVEN: Mocked out objects
with patch('openlp.core.common.os') as mocked_os, patch('openlp.core.common.sys') as mocked_sys:
# WHEN: The mocked os.name and sys.platform are set to 'posix' and 'linux3' repectivly
mocked_os.name = 'posix'
mocked_sys.platform = 'linux3'
# THEN: The three platform functions should perform properly
assert is_linux() is True, 'is_linux() should return True'
assert is_win() is False, 'is_win() should return False'
assert is_macosx() is False, 'is_macosx() should return False'
def test_normalize_str_leaves_newlines(self):
# GIVEN: a string containing newlines
string = 'something\nelse'
# WHEN: normalize is called
normalized_string = normalize_str(string)
# THEN: string is unchanged
assert normalized_string == string
def test_normalize_str_removes_null_byte(self):
# GIVEN: a string containing a null byte
string = 'somet\x00hing'
# WHEN: normalize is called
normalized_string = normalize_str(string)
# THEN: nullbyte is removed
assert normalized_string == 'something'
def test_normalize_str_replaces_crlf_with_lf(self):
# GIVEN: a string containing crlf
string = 'something\r\nelse'
# WHEN: normalize is called
normalized_string = normalize_str(string)
# THEN: crlf is replaced with lf
assert normalized_string == 'something\nelse'
def test_clean_button_text(self):
"""
Test the clean_button_text() function.
"""
# GIVEN: Button text
input_text = '&Next >'
expected_text = 'Next'
# WHEN: The button caption is sent through the clean_button_text function
actual_text = clean_button_text(input_text)
# THEN: The text should have been cleaned
assert expected_text == actual_text, 'The text should be clean'
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