def run_case(self, testcase: DataDrivenTestCase) -> None:
first_src = '\n'.join(testcase.input)
files_dict = dict(testcase.files)
second_src = files_dict['tmp/next.py']
messages1, files1 = self.build(first_src)
messages2, files2 = self.build(second_src)
a = []
if messages1:
a.extend(messages1)
if messages2:
a.append('== next ==')
a.extend(messages2)
assert files1 is not None and files2 is not None, (
'cases where CompileError'
' occurred should not be run')
diff = compare_symbol_tables('__main__', files1['__main__'].names,
files2['__main__'].names)
for trigger in sorted(diff):
a.append(trigger)
assert_string_arrays_equal(
testcase.output, a,
'Invalid output ({}, line {})'.format(testcase.file,
testcase.line))
def calculate_active_triggers(manager: BuildManager,
old_modules: Dict[str, MypyFile],
new_modules: Dict[str, MypyFile]) -> Set[str]:
"""Determine activated triggers by comparing old and new symbol tables.
For example, if only the signature of function m.f is different in the new
symbol table, return {'<m.f>'}.
"""
names = set() # type: Set[str]
for id in new_modules:
names |= compare_symbol_tables(id, old_modules[id].names,
new_modules[id].names)
return {make_trigger(name) for name in names}