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import unittest
import gast
import sys
def dump(node):
return gast.dump(node, show_empty=True)
class CompatTestCase(unittest.TestCase):
def __init__(self, *args, **kwargs):
unittest.TestCase.__init__(self, *args, **kwargs)
self.maxDiff = None
if sys.version_info.major == 2:
def test_FunctionDef(self):
code = 'def foo((x, y)): return x, y'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args="
"[Tuple(elts=[Name(id='x', ctx=Store(), annotation=None, "
"type_comment=None), Name(id='y', ctx=Store(), "
"annotation=None, type_comment=None)], ctx=Store())], "
"posonlyargs=[], vararg=None, "
"kwonlyargs=[], kw_defaults=[], kwarg=None, defaults=[]), "
"body=[Return(value=Tuple(elts=[Name(id='x', ctx=Load(), "
"annotation=None, type_comment=None), "
"Name(id='y', ctx=Load(), "
"annotation=None, type_comment=None"
")], ctx=Load()))], decorator_list="
"[], returns=None, type_comment=None, type_params=[])], "
"type_ignores=[])")
self.assertEqual(dump(tree), norm)
else:
def test_ArgAnnotation(self):
code = 'def foo(x:int): pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args="
"[Name(id='x', ctx=Param(), annotation=Name"
"(id='int', ctx=Load(), annotation=None, type_comment=None"
"), type_comment=None)], posonlyargs="
"[], vararg=None, kwonlyargs=[], kw_defaults=[], kwarg="
"None, defaults=[]), body=[Pass()], decorator_list=[], "
"returns=None, type_comment=None, type_params=[])], "
"type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_KeywordOnlyArgument(self):
code = 'def foo(*, x=1): pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args="
"[], posonlyargs=[], vararg=None, kwonlyargs=[Name"
"(id='x', ctx=Param(), annotation=None, type_comment=None"
")], kw_defaults=[Constant(value=1, kind=None)], kwarg="
"None, defaults=[]), body=[Pass()], decorator_list=[], "
"returns=None, type_comment=None, type_params=[])], "
"type_ignores=[])")
self.assertEqual(dump(tree), norm)
if sys.version_info.minor >= 6:
def test_FormattedValue(self):
code = 'e = 1; f"{e}"'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Assign(targets=[Name(id='e', ctx=Store()"
", annotation=None, type_comment=None"
")], value=Constant(value=1, kind=None), "
"type_comment=None), Expr(value="
"JoinedStr(values=[FormattedValue(value=Name(id='e', "
"ctx=Load(), annotation=None, type_comment=None), "
"conversion=-1, format_spec=None)]))], "
"type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_JoinedStr(self):
code = 'e = 1; f"e = {e}"'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Assign(targets=[Name(id='e', ctx=Store()"
", annotation=None, type_comment=None"
")], value=Constant(value=1, kind=None), "
"type_comment=None), Expr(value="
"JoinedStr(values=[Constant(value='e = ', kind=None), "
"FormattedValue(value=Name(id='e', ctx=Load(), "
"annotation=None, type_comment=None), "
"conversion=-1, format_spec=None)]))], "
"type_ignores=[])")
self.assertEqual(dump(tree), norm)
if sys.version_info.minor >= 8:
def test_TypeIgnore(self):
code = 'def foo(): pass # type: ignore[excuse]'
tree = gast.parse(code, type_comments=True)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments("
"args=[], posonlyargs=[], vararg=None, kwonlyargs=[], "
"kw_defaults=[], kwarg=None, defaults=[]), body=["
"Pass()], decorator_list=[], returns=None, "
"type_comment=None, type_params=[])], type_ignores="
"[TypeIgnore(lineno=1, tag='[excuse]')])")
self.assertEqual(dump(tree), norm)
def test_PosonlyArgs(self):
code = 'def foo(a, /, b): pass'
tree = gast.parse(code, type_comments=True)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments("
"args=[Name(id='b', ctx=Param(), annotation=None, "
"type_comment=None)], posonlyargs=[Name(id='a', "
"ctx=Param(), annotation=None, type_comment=None)], "
"vararg=None, kwonlyargs=[], kw_defaults=[], "
"kwarg=None, defaults=[]), body=[Pass()], "
"decorator_list=[], returns=None, type_comment=None, "
"type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_NamedExpr(self):
code = '(x := 1) '
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Expr(value=NamedExpr(target=Name(id='x',"
" ctx=Store(), annotation=None, type_comment=None), "
"value=Constant(value=1, kind=None)))], type_ignores="
"[])")
self.assertEqual(dump(tree), norm)
if sys.version_info.minor >= 10:
def test_MatchValue(self):
code = 'match v:\n case "hello":...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases="
"[match_case(pattern=MatchValue(value=Constant("
"value='hello', kind=None)), guard=None, body="
"[Expr(value=Constant(value=Ellipsis, kind=None))]"
")])], type_ignores=[])"
)
self.assertEqual(dump(tree), norm)
def test_MatchSingleton(self):
code = 'match v:\n case None:...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases=["
"match_case(pattern=MatchSingleton(value=None), "
"guard=None, body=[Expr(value=Constant(value="
"Ellipsis, kind=None))])])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_MatchSequence(self):
code = 'match v:\n case a, b:...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases="
"[match_case(pattern=MatchSequence(patterns=["
"MatchAs(pattern=None, name='a'), MatchAs(pattern"
"=None, name='b')]), guard=None, body=[Expr(value"
"=Constant(value=Ellipsis, kind=None))])])], "
"type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_MatchMapping(self):
code = 'match v:\n case {1: a}:...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases=["
"match_case(pattern=MatchMapping(keys=[Constant("
"value=1, kind=None)], patterns=[MatchAs(pattern"
"=None, name='a')], rest=None), guard=None, body="
"[Expr(value=Constant(value=Ellipsis, kind=None))]"
")])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_MatchClass(self):
code = 'match v:\n case Cls(attr=1):...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases=["
"match_case(pattern=MatchClass(cls=Name(id='Cls'"
", ctx=Load(), annotation=None, type_comment=None"
"), patterns=[], kwd_attrs=['attr'], kwd_patterns"
"=[MatchValue(value=Constant(value=1, kind=None))"
"]), guard=None, body=[Expr(value=Constant(value="
"Ellipsis, kind=None))])])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_MatchStar(self):
code = 'match v:\n case [1, *other]:...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases=["
"match_case(pattern=MatchSequence(patterns=["
"MatchValue(value=Constant(value=1, kind=None)), "
"MatchStar(name='other')]), guard=None, body="
"[Expr(value=Constant(value=Ellipsis, kind=None)"
")])])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_MatchAs(self):
code = 'match v:\n case 1, other:...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases=["
"match_case(pattern=MatchSequence(patterns=["
"MatchValue(value=Constant(value=1, kind=None)), "
"MatchAs(pattern=None, name='other')]), guard=None"
", body=[Expr(value=Constant(value=Ellipsis, kind"
"=None))])])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_MatchOr(self):
code = 'match v:\n case 1 | 2:...'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Match(subject=Name(id='v', ctx=Load"
"(), annotation=None, type_comment=None), cases=["
"match_case(pattern=MatchOr(patterns=[MatchValue("
"value=Constant(value=1, kind=None)), MatchValue("
"value=Constant(value=2, kind=None))]), guard="
"None, body=[Expr(value=Constant(value=Ellipsis, "
"kind=None))])])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
if sys.version_info.minor >= 11:
def test_TryStar(self):
code = '''
try: ...
except *ValueError: ...'''
norm = ("Module(body=[TryStar(body=[Expr(value="
"Constant(value=Ellipsis))], handlers=["
"ExceptHandler(type=Name(id='ValueError', ctx"
"=Load()), body=[Expr(value=Constant(value="
"Ellipsis))])], orelse=[], finalbody=[])], "
"type_ignores=[])")
pass
else:
def test_Bytes(self):
code = 'b"0012"'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Expr(value=Constant(value=b'0012', "
"kind=None))], type_ignores=[])")
self.assertEqual(dump(tree), norm)
# common
def test_TryExcept(self):
code = 'try:pass\nexcept e:pass\nelse:pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Try(body=[Pass()], handlers=[ExceptHandler("
"type=Name(id='e', ctx=Load(), annotation=None, "
"type_comment=None), name=None, body=[Pass()])]"
", orelse=[Pass()], finalbody=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_TryExceptNamed(self):
code = 'try:pass\nexcept e as f:pass\nelse:pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Try(body=[Pass()], handlers=[ExceptHandler("
"type=Name(id='e', ctx=Load(), annotation=None, "
"type_comment=None), name=Name(id='f', ctx="
"Store(), annotation=None, type_comment=None), body=[Pass()])]"
", orelse=[Pass()], finalbody=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_Raise(self):
codes = ('raise Exception',
'raise "Exception"',
'raise Exception, "err"',
'raise Exception("err")',
'raise E, V, T',)
norms = ("Module(body=[Raise(exc=Name(id='Exception', ctx=Load(), "
"annotation=None, type_comment=None),"
" cause=None)], type_ignores=[])",
"Module(body=[Raise(exc=Constant(value='Exception', kind="
"None), cause=None)], type_ignores=[])",
"Module(body=[Raise(exc=Call(func=Name(id='Exception', "
"ctx=Load(), annotation=None, type_comment=None), "
"args=[Constant(value='err', kind=None)], "
"keywords=[]), cause=None)], type_ignores=[])",
"Module(body=[Raise(exc=Call(func=Name(id='Exception', "
"ctx=Load(), annotation=None, type_comment=None), "
"args=[Constant(value='err', kind=None)], "
"keywords=[]), cause=None)], type_ignores=[])",
"Module(body=[Raise(exc=Call(func=Attribute(value=Call("
"func=Name(id='E', ctx=Load(), annotation=None, "
"type_comment=None), args=[Name(id='V', ctx="
"Load(), annotation=None, type_comment=None)], keywords=[]), "
"attr='with_traceback', ctx=Load"
"()), args=[Name(id='T', ctx=Load(), annotation=None, "
"type_comment=None)], keywords=[]), "
"cause=None)], type_ignores=[])",)
if sys.version_info.major == 3:
codes = codes[0], codes[1], codes[3]
norms = norms[0], norms[1], norms[3]
for code, norm in zip(codes, norms):
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
self.assertEqual(dump(tree), norm)
def test_Call(self):
code = 'foo(x, y=1, *args, **kwargs)'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Expr(value=Call(func=Name(id='foo', ctx=Load"
"(), annotation=None, type_comment=None"
"), args=[Name(id='x', ctx=Load(), "
"annotation=None, type_comment=None), Starred(value=Name("
"id='args', ctx=Load(), annotation=None, type_comment=None)"
", ctx=Load())], keywords=[keyword("
"arg='y', value=Constant(value=1, kind=None)), keyword(arg"
"=None, value=Name(id='kwargs', ctx=Load(), annotation=None, "
"type_comment=None))]))], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_With(self):
code = 'with open("any"): pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[With(items=[withitem(context_expr=Call(func="
"Name(id='open', ctx=Load(), annotation=None, "
"type_comment=None), args=[Constant(value='any', "
"kind=None)], keywords=[]), optional_vars=None)], body=["
"Pass()], type_comment=None)], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_TryFinally(self):
code = 'try:pass\nfinally:pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[Try(body=[Pass()], handlers=[], orelse=[], "
"finalbody=[Pass()])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_star_argument(self):
code = 'def foo(*a): pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args=[], "
"posonlyargs=[], vararg=Name(id='a', ctx=Param(), "
"annotation=None, type_comment=None), "
"kwonlyargs=[], kw_defaults=[], kwarg=None, defaults=[]), "
"body=[Pass()], decorator_list=[], returns=None, "
"type_comment=None, type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_keyword_argument(self):
code = 'def foo(**a): pass'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args=[], "
"posonlyargs=[], vararg=None, kwonlyargs=[], kw_defaults=[], "
"kwarg=Name(id='a', ctx=Param(), annotation=None, "
"type_comment=None), defaults=[]), body=[Pass()], "
"decorator_list=[], returns=None, type_comment=None, "
"type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_Index(self):
code = 'def foo(a): a[1]'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args=["
"Name(id='a', ctx=Param(), annotation=None, type_comment=None)"
"], posonlyargs=[], vararg=None, kwonlyargs=[], kw_defaults=[]"
", kwarg=None, defaults=[]), body=[Expr(value=Subscript(value="
"Name(id='a', ctx=Load(), annotation=None, type_comment=None)"
", slice=Constant(value=1, kind=None), ctx=Load()"
"))], decorator_list=[], returns=None, type_comment=None, "
"type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_ExtSlice(self):
code = 'def foo(a): a[:,:]'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args=["
"Name(id='a', ctx=Param(), annotation=None, type_comment=None)"
"], posonlyargs=[], vararg=None, kwonlyargs=[], kw_defaults=[]"
", kwarg=None, defaults=[]), body=[Expr(value=Subscript(value="
"Name(id='a', ctx=Load(), annotation=None, type_comment=None)"
", slice=Tuple(elts=[Slice(lower=None, upper=None, step="
"None), Slice(lower=None, upper=None, step=None)], ctx=Load())"
", ctx=Load()))], decorator_list=[], returns=None, "
"type_comment=None, type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_ExtSlices(self):
code = 'def foo(a): a[1,:]'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args=["
"Name(id='a', ctx=Param(), annotation=None, type_comment=None)"
"], posonlyargs=[], vararg=None, kwonlyargs=[], kw_defaults=[]"
", kwarg=None, defaults=[]), body=[Expr(value=Subscript(value="
"Name(id='a', ctx=Load(), annotation=None, type_comment=None)"
", slice=Tuple(elts=[Constant(value=1, kind="
"None), Slice(lower=None, upper=None, step=None)], ctx=Load())"
", ctx=Load()))], decorator_list=[], returns=None, "
"type_comment=None, type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_Ellipsis(self):
code = 'def foo(a): a[...]'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args=["
"Name(id='a', ctx=Param(), annotation=None, type_comment=None)"
"], posonlyargs=[], vararg=None, kwonlyargs=[], kw_defaults=[]"
", kwarg=None, defaults=[]), body=[Expr(value=Subscript(value="
"Name(id='a', ctx=Load(), annotation=None, type_comment=None)"
", slice=Constant(value=Ellipsis, kind=None), ctx=Load()))], "
"decorator_list=[], returns=None, type_comment=None, "
"type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
def test_ExtSliceEllipsis(self):
code = 'def foo(a): a[1, ...]'
tree = gast.parse(code)
compile(gast.gast_to_ast(tree), '<test>', 'exec')
norm = ("Module(body=[FunctionDef(name='foo', args=arguments(args=["
"Name(id='a', ctx=Param(), annotation=None, type_comment=None)"
"], posonlyargs=[], vararg=None, kwonlyargs=[], kw_defaults=[]"
", kwarg=None, defaults=[]), body=[Expr(value=Subscript(value="
"Name(id='a', ctx=Load(), annotation=None, type_comment=None)"
", slice=Tuple(elts=[Constant(value=1, kind=None)"
", Constant(value=Ellipsis, kind=None)], ctx=Load()), ctx="
"Load()))], decorator_list=[], returns=None, type_comment="
"None, type_params=[])], type_ignores=[])")
self.assertEqual(dump(tree), norm)
if __name__ == '__main__':
unittest.main()
|
