def load_suite_from_file(self, filename):
"""Load a test suite with test lines from the provided TAP file.
:returns: A ``unittest.TestSuite`` instance
"""
suite = unittest.TestSuite()
rules = Rules(filename, suite)
if not os.path.exists(filename):
rules.handle_file_does_not_exist()
return suite
line_counter = 0
for line in self._parser.parse_file(filename):
line_counter += 1
if line.category in self.ignored_lines:
continue
if line.category == 'test':
suite.addTest(Adapter(filename, line))
rules.saw_test()
elif line.category == 'plan':
if line.skip:
rules.handle_skipping_plan(line)
return suite
rules.saw_plan(line, line_counter)
elif line.category == 'bail':
rules.handle_bail(line)
return suite
elif line.category == 'version':
rules.saw_version_at(line_counter)
rules.check(line_counter)
return suite