238 lines
8.7 KiB
Python
238 lines
8.7 KiB
Python
"""Test cases for AST merge (used for fine-grained incremental checking)"""
|
|
|
|
import os
|
|
import shutil
|
|
from typing import List, Tuple, Dict, Optional
|
|
|
|
from mypy import build
|
|
from mypy.build import BuildResult
|
|
from mypy.modulefinder import BuildSource
|
|
from mypy.errors import CompileError
|
|
from mypy.nodes import (
|
|
Node, MypyFile, SymbolTable, SymbolTableNode, TypeInfo, Expression, Var, TypeVarExpr,
|
|
UNBOUND_IMPORTED
|
|
)
|
|
from mypy.server.subexpr import get_subexpressions
|
|
from mypy.server.update import FineGrainedBuildManager
|
|
from mypy.strconv import StrConv
|
|
from mypy.test.config import test_temp_dir
|
|
from mypy.test.data import DataDrivenTestCase, DataSuite
|
|
from mypy.test.helpers import assert_string_arrays_equal, normalize_error_messages, parse_options
|
|
from mypy.types import TypeStrVisitor, Type
|
|
from mypy.util import short_type, IdMapper
|
|
|
|
|
|
# Which data structures to dump in a test case?
|
|
SYMTABLE = 'SYMTABLE'
|
|
TYPEINFO = ' TYPEINFO'
|
|
TYPES = 'TYPES'
|
|
AST = 'AST'
|
|
|
|
|
|
NOT_DUMPED_MODULES = (
|
|
'builtins',
|
|
'typing',
|
|
'abc',
|
|
'contextlib',
|
|
'sys',
|
|
'mypy_extensions',
|
|
'typing_extensions',
|
|
'enum',
|
|
)
|
|
|
|
|
|
class ASTMergeSuite(DataSuite):
|
|
files = ['merge.test']
|
|
|
|
def setup(self) -> None:
|
|
super().setup()
|
|
self.str_conv = StrConv(show_ids=True)
|
|
assert self.str_conv.id_mapper is not None
|
|
self.id_mapper: IdMapper = self.str_conv.id_mapper
|
|
self.type_str_conv = TypeStrVisitor(self.id_mapper)
|
|
|
|
def run_case(self, testcase: DataDrivenTestCase) -> None:
|
|
name = testcase.name
|
|
# We use the test case name to decide which data structures to dump.
|
|
# Dumping everything would result in very verbose test cases.
|
|
if name.endswith('_symtable'):
|
|
kind = SYMTABLE
|
|
elif name.endswith('_typeinfo'):
|
|
kind = TYPEINFO
|
|
elif name.endswith('_types'):
|
|
kind = TYPES
|
|
else:
|
|
kind = AST
|
|
|
|
main_src = '\n'.join(testcase.input)
|
|
result = self.build(main_src, testcase)
|
|
assert result is not None, 'cases where CompileError occurred should not be run'
|
|
result.manager.fscache.flush()
|
|
fine_grained_manager = FineGrainedBuildManager(result)
|
|
|
|
a = []
|
|
if result.errors:
|
|
a.extend(result.errors)
|
|
|
|
target_path = os.path.join(test_temp_dir, 'target.py')
|
|
shutil.copy(os.path.join(test_temp_dir, 'target.py.next'), target_path)
|
|
|
|
a.extend(self.dump(fine_grained_manager, kind))
|
|
old_subexpr = get_subexpressions(result.manager.modules['target'])
|
|
|
|
a.append('==>')
|
|
|
|
new_file, new_types = self.build_increment(fine_grained_manager, 'target', target_path)
|
|
a.extend(self.dump(fine_grained_manager, kind))
|
|
|
|
for expr in old_subexpr:
|
|
if isinstance(expr, TypeVarExpr):
|
|
# These are merged so we can't perform the check.
|
|
continue
|
|
# Verify that old AST nodes are removed from the expression type map.
|
|
assert expr not in new_types
|
|
|
|
if testcase.normalize_output:
|
|
a = normalize_error_messages(a)
|
|
|
|
assert_string_arrays_equal(
|
|
testcase.output, a,
|
|
f'Invalid output ({testcase.file}, line {testcase.line})')
|
|
|
|
def build(self, source: str, testcase: DataDrivenTestCase) -> Optional[BuildResult]:
|
|
options = parse_options(source, testcase, incremental_step=1)
|
|
options.incremental = True
|
|
options.fine_grained_incremental = True
|
|
options.use_builtins_fixtures = True
|
|
options.export_types = True
|
|
options.show_traceback = True
|
|
main_path = os.path.join(test_temp_dir, 'main')
|
|
with open(main_path, 'w', encoding='utf8') as f:
|
|
f.write(source)
|
|
try:
|
|
result = build.build(sources=[BuildSource(main_path, None, None)],
|
|
options=options,
|
|
alt_lib_path=test_temp_dir)
|
|
except CompileError:
|
|
# TODO: Is it okay to return None?
|
|
return None
|
|
return result
|
|
|
|
def build_increment(self, manager: FineGrainedBuildManager,
|
|
module_id: str, path: str) -> Tuple[MypyFile,
|
|
Dict[Expression, Type]]:
|
|
manager.flush_cache()
|
|
manager.update([(module_id, path)], [])
|
|
module = manager.manager.modules[module_id]
|
|
type_map = manager.graph[module_id].type_map()
|
|
return module, type_map
|
|
|
|
def dump(self,
|
|
manager: FineGrainedBuildManager,
|
|
kind: str) -> List[str]:
|
|
modules = manager.manager.modules
|
|
if kind == AST:
|
|
return self.dump_asts(modules)
|
|
elif kind == TYPEINFO:
|
|
return self.dump_typeinfos(modules)
|
|
elif kind == SYMTABLE:
|
|
return self.dump_symbol_tables(modules)
|
|
elif kind == TYPES:
|
|
return self.dump_types(manager)
|
|
assert False, f'Invalid kind {kind}'
|
|
|
|
def dump_asts(self, modules: Dict[str, MypyFile]) -> List[str]:
|
|
a = []
|
|
for m in sorted(modules):
|
|
if m in NOT_DUMPED_MODULES:
|
|
# We don't support incremental checking of changes to builtins, etc.
|
|
continue
|
|
s = modules[m].accept(self.str_conv)
|
|
a.extend(s.splitlines())
|
|
return a
|
|
|
|
def dump_symbol_tables(self, modules: Dict[str, MypyFile]) -> List[str]:
|
|
a = []
|
|
for id in sorted(modules):
|
|
if not is_dumped_module(id):
|
|
# We don't support incremental checking of changes to builtins, etc.
|
|
continue
|
|
a.extend(self.dump_symbol_table(id, modules[id].names))
|
|
return a
|
|
|
|
def dump_symbol_table(self, module_id: str, symtable: SymbolTable) -> List[str]:
|
|
a = [f'{module_id}:']
|
|
for name in sorted(symtable):
|
|
if name.startswith('__'):
|
|
continue
|
|
a.append(f' {name}: {self.format_symbol_table_node(symtable[name])}')
|
|
return a
|
|
|
|
def format_symbol_table_node(self, node: SymbolTableNode) -> str:
|
|
if node.node is None:
|
|
if node.kind == UNBOUND_IMPORTED:
|
|
return 'UNBOUND_IMPORTED'
|
|
return 'None'
|
|
if isinstance(node.node, Node):
|
|
s = f'{str(type(node.node).__name__)}<{self.id_mapper.id(node.node)}>'
|
|
else:
|
|
s = f'? ({type(node.node)})'
|
|
if (isinstance(node.node, Var) and node.node.type and
|
|
not node.node.fullname.startswith('typing.')):
|
|
typestr = self.format_type(node.node.type)
|
|
s += f'({typestr})'
|
|
return s
|
|
|
|
def dump_typeinfos(self, modules: Dict[str, MypyFile]) -> List[str]:
|
|
a = []
|
|
for id in sorted(modules):
|
|
if not is_dumped_module(id):
|
|
continue
|
|
a.extend(self.dump_typeinfos_recursive(modules[id].names))
|
|
return a
|
|
|
|
def dump_typeinfos_recursive(self, names: SymbolTable) -> List[str]:
|
|
a = []
|
|
for name, node in sorted(names.items(), key=lambda x: x[0]):
|
|
if isinstance(node.node, TypeInfo):
|
|
a.extend(self.dump_typeinfo(node.node))
|
|
a.extend(self.dump_typeinfos_recursive(node.node.names))
|
|
return a
|
|
|
|
def dump_typeinfo(self, info: TypeInfo) -> List[str]:
|
|
if info.fullname == 'enum.Enum':
|
|
# Avoid noise
|
|
return []
|
|
s = info.dump(str_conv=self.str_conv,
|
|
type_str_conv=self.type_str_conv)
|
|
return s.splitlines()
|
|
|
|
def dump_types(self, manager: FineGrainedBuildManager) -> List[str]:
|
|
a = []
|
|
# To make the results repeatable, we try to generate unique and
|
|
# deterministic sort keys.
|
|
for module_id in sorted(manager.manager.modules):
|
|
if not is_dumped_module(module_id):
|
|
continue
|
|
all_types = manager.manager.all_types
|
|
# Compute a module type map from the global type map
|
|
tree = manager.graph[module_id].tree
|
|
assert tree is not None
|
|
type_map = {node: all_types[node]
|
|
for node in get_subexpressions(tree)
|
|
if node in all_types}
|
|
if type_map:
|
|
a.append(f'## {module_id}')
|
|
for expr in sorted(type_map, key=lambda n: (n.line, short_type(n),
|
|
str(n) + str(type_map[n]))):
|
|
typ = type_map[expr]
|
|
a.append(f'{short_type(expr)}:{expr.line}: {self.format_type(typ)}')
|
|
return a
|
|
|
|
def format_type(self, typ: Type) -> str:
|
|
return typ.accept(self.type_str_conv)
|
|
|
|
|
|
def is_dumped_module(id: str) -> bool:
|
|
return id not in NOT_DUMPED_MODULES and (not id.startswith('_') or id == '__main__')
|