[Python-checkins] cpython (2.7): add more ast tests (closes #11302)
benjamin.peterson
python-checkins at python.org
Tue Jun 28 00:51:47 CEST 2011
http://hg.python.org/cpython/rev/3143cadb2f2d
changeset: 71019:3143cadb2f2d
branch: 2.7
parent: 71012:5d08c2a6274d
user: Benjamin Peterson <benjamin at python.org>
date: Mon Jun 27 17:46:06 2011 -0500
summary:
add more ast tests (closes #11302)
A patch from Vincent Legoll.
files:
Lib/test/test_ast.py | 178 +++++++++++++++++++++++++++++++
1 files changed, 178 insertions(+), 0 deletions(-)
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -20,10 +20,24 @@
# These tests are compiled through "exec"
# There should be atleast one test per statement
exec_tests = [
+ # None
+ "None",
# FunctionDef
"def f(): pass",
+ # FunctionDef with arg
+ "def f(a): pass",
+ # FunctionDef with arg and default value
+ "def f(a=0): pass",
+ # FunctionDef with varargs
+ "def f(*args): pass",
+ # FunctionDef with kwargs
+ "def f(**kwargs): pass",
+ # FunctionDef with all kind of args
+ "def f(a, b=1, c=None, d=[], e={}, *args, **kwargs): pass",
# ClassDef
"class C:pass",
+ # ClassDef, new style class
+ "class C(object): pass",
# Return
"def f():return 1",
# Delete
@@ -68,6 +82,27 @@
"for a,b in c: pass",
"[(a,b) for a,b in c]",
"((a,b) for a,b in c)",
+ "((a,b) for (a,b) in c)",
+ # Multiline generator expression (test for .lineno & .col_offset)
+ """(
+ (
+ Aa
+ ,
+ Bb
+ )
+ for
+ Aa
+ ,
+ Bb in Cc
+ )""",
+ # dictcomp
+ "{a : b for w in x for m in p if g}",
+ # dictcomp with naked tuple
+ "{a : b for v,w in x}",
+ # setcomp
+ "{r for l in x if g}",
+ # setcomp with naked tuple
+ "{r for l,m in x}",
]
# These are compiled through "single"
@@ -80,6 +115,8 @@
# These are compiled through "eval"
# It should test all expressions
eval_tests = [
+ # None
+ "None",
# BoolOp
"a and b",
# BinOp
@@ -90,6 +127,16 @@
"lambda:None",
# Dict
"{ 1:2 }",
+ # Empty dict
+ "{}",
+ # Set
+ "{None,}",
+ # Multiline dict (test for .lineno & .col_offset)
+ """{
+ 1
+ :
+ 2
+ }""",
# ListComp
"[a for b in c if d]",
# GeneratorExp
@@ -114,8 +161,14 @@
"v",
# List
"[1,2,3]",
+ # Empty list
+ "[]",
# Tuple
"1,2,3",
+ # Tuple
+ "(1,2,3)",
+ # Empty tuple
+ "()",
# Combination
"a.b.c.d(a.b[1:2])",
@@ -141,6 +194,23 @@
elif value is not None:
self._assertTrueorder(value, parent_pos)
+ def test_AST_objects(self):
+ x = ast.AST()
+ self.assertEqual(x._fields, ())
+
+ with self.assertRaises(AttributeError):
+ x.vararg
+
+ with self.assertRaises(AttributeError):
+ x.foobar = 21
+
+ with self.assertRaises(AttributeError):
+ ast.AST(lineno=2)
+
+ with self.assertRaises(TypeError):
+ # "_ast.AST constructor takes 0 positional arguments"
+ ast.AST(2)
+
def test_snippets(self):
for input, output, kind in ((exec_tests, exec_results, "exec"),
(single_tests, single_results, "single"),
@@ -169,7 +239,83 @@
self.assertTrue(issubclass(ast.comprehension, ast.AST))
self.assertTrue(issubclass(ast.Gt, ast.AST))
+ def test_field_attr_existence(self):
+ for name, item in ast.__dict__.iteritems():
+ if isinstance(item, type) and name != 'AST' and name[0].isupper():
+ x = item()
+ if isinstance(x, ast.AST):
+ self.assertEqual(type(x._fields), tuple)
+
+ def test_arguments(self):
+ x = ast.arguments()
+ self.assertEqual(x._fields, ('args', 'vararg', 'kwarg', 'defaults'))
+
+ with self.assertRaises(AttributeError):
+ x.vararg
+
+ x = ast.arguments(1, 2, 3, 4)
+ self.assertEqual(x.vararg, 2)
+
+ def test_field_attr_writable(self):
+ x = ast.Num()
+ # We can assign to _fields
+ x._fields = 666
+ self.assertEqual(x._fields, 666)
+
+ def test_classattrs(self):
+ x = ast.Num()
+ self.assertEqual(x._fields, ('n',))
+
+ with self.assertRaises(AttributeError):
+ x.n
+
+ x = ast.Num(42)
+ self.assertEqual(x.n, 42)
+
+ with self.assertRaises(AttributeError):
+ x.lineno
+
+ with self.assertRaises(AttributeError):
+ x.foobar
+
+ x = ast.Num(lineno=2)
+ self.assertEqual(x.lineno, 2)
+
+ x = ast.Num(42, lineno=0)
+ self.assertEqual(x.lineno, 0)
+ self.assertEqual(x._fields, ('n',))
+ self.assertEqual(x.n, 42)
+
+ self.assertRaises(TypeError, ast.Num, 1, 2)
+ self.assertRaises(TypeError, ast.Num, 1, 2, lineno=0)
+
+ def test_module(self):
+ body = [ast.Num(42)]
+ x = ast.Module(body)
+ self.assertEqual(x.body, body)
+
def test_nodeclasses(self):
+ # Zero arguments constructor explicitely allowed
+ x = ast.BinOp()
+ self.assertEqual(x._fields, ('left', 'op', 'right'))
+
+ # Random attribute allowed too
+ x.foobarbaz = 5
+ self.assertEqual(x.foobarbaz, 5)
+
+ n1 = ast.Num(1)
+ n3 = ast.Num(3)
+ addop = ast.Add()
+ x = ast.BinOp(n1, addop, n3)
+ self.assertEqual(x.left, n1)
+ self.assertEqual(x.op, addop)
+ self.assertEqual(x.right, n3)
+
+ x = ast.BinOp(1, 2, 3)
+ self.assertEqual(x.left, 1)
+ self.assertEqual(x.op, 2)
+ self.assertEqual(x.right, 3)
+
x = ast.BinOp(1, 2, 3, lineno=0)
self.assertEqual(x.left, 1)
self.assertEqual(x.op, 2)
@@ -178,6 +324,12 @@
# node raises exception when not given enough arguments
self.assertRaises(TypeError, ast.BinOp, 1, 2)
+ # node raises exception when given too many arguments
+ self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4)
+ # node raises exception when not given enough arguments
+ self.assertRaises(TypeError, ast.BinOp, 1, 2, lineno=0)
+ # node raises exception when given too many arguments
+ self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4, lineno=0)
# can set attributes through kwargs too
x = ast.BinOp(left=1, op=2, right=3, lineno=0)
@@ -186,8 +338,14 @@
self.assertEqual(x.right, 3)
self.assertEqual(x.lineno, 0)
+ # Random kwargs also allowed
+ x = ast.BinOp(1, 2, 3, foobarbaz=42)
+ self.assertEqual(x.foobarbaz, 42)
+
+ def test_no_fields(self):
# this used to fail because Sub._fields was None
x = ast.Sub()
+ self.assertEqual(x._fields, ())
def test_pickling(self):
import pickle
@@ -330,8 +488,15 @@
#### EVERYTHING BELOW IS GENERATED #####
exec_results = [
+('Module', [('Expr', (1, 0), ('Name', (1, 0), 'None', ('Load',)))]),
('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, None, []), [('Pass', (1, 9))], [])]),
+('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [('Name', (1, 6), 'a', ('Param',))], None, None, []), [('Pass', (1, 10))], [])]),
+('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [('Name', (1, 6), 'a', ('Param',))], None, None, [('Num', (1, 8), 0)]), [('Pass', (1, 12))], [])]),
+('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], 'args', None, []), [('Pass', (1, 14))], [])]),
+('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, 'kwargs', []), [('Pass', (1, 17))], [])]),
+('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [('Name', (1, 6), 'a', ('Param',)), ('Name', (1, 9), 'b', ('Param',)), ('Name', (1, 14), 'c', ('Param',)), ('Name', (1, 22), 'd', ('Param',)), ('Name', (1, 28), 'e', ('Param',))], 'args', 'kwargs', [('Num', (1, 11), 1), ('Name', (1, 16), 'None', ('Load',)), ('List', (1, 24), [], ('Load',)), ('Dict', (1, 30), [], [])]), [('Pass', (1, 52))], [])]),
('Module', [('ClassDef', (1, 0), 'C', [], [('Pass', (1, 8))], [])]),
+('Module', [('ClassDef', (1, 0), 'C', [('Name', (1, 8), 'object', ('Load',))], [('Pass', (1, 17))], [])]),
('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, None, []), [('Return', (1, 8), ('Num', (1, 15), 1))], [])]),
('Module', [('Delete', (1, 0), [('Name', (1, 4), 'v', ('Del',))])]),
('Module', [('Assign', (1, 0), [('Name', (1, 0), 'v', ('Store',))], ('Num', (1, 4), 1))]),
@@ -355,16 +520,26 @@
('Module', [('For', (1, 0), ('Tuple', (1, 4), [('Name', (1, 4), 'a', ('Store',)), ('Name', (1, 6), 'b', ('Store',))], ('Store',)), ('Name', (1, 11), 'c', ('Load',)), [('Pass', (1, 14))], [])]),
('Module', [('Expr', (1, 0), ('ListComp', (1, 1), ('Tuple', (1, 2), [('Name', (1, 2), 'a', ('Load',)), ('Name', (1, 4), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11), [('Name', (1, 11), 'a', ('Store',)), ('Name', (1, 13), 'b', ('Store',))], ('Store',)), ('Name', (1, 18), 'c', ('Load',)), [])]))]),
('Module', [('Expr', (1, 0), ('GeneratorExp', (1, 1), ('Tuple', (1, 2), [('Name', (1, 2), 'a', ('Load',)), ('Name', (1, 4), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11), [('Name', (1, 11), 'a', ('Store',)), ('Name', (1, 13), 'b', ('Store',))], ('Store',)), ('Name', (1, 18), 'c', ('Load',)), [])]))]),
+('Module', [('Expr', (1, 0), ('GeneratorExp', (1, 1), ('Tuple', (1, 2), [('Name', (1, 2), 'a', ('Load',)), ('Name', (1, 4), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 12), [('Name', (1, 12), 'a', ('Store',)), ('Name', (1, 14), 'b', ('Store',))], ('Store',)), ('Name', (1, 20), 'c', ('Load',)), [])]))]),
+('Module', [('Expr', (1, 0), ('GeneratorExp', (2, 4), ('Tuple', (3, 4), [('Name', (3, 4), 'Aa', ('Load',)), ('Name', (5, 7), 'Bb', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (8, 4), [('Name', (8, 4), 'Aa', ('Store',)), ('Name', (10, 4), 'Bb', ('Store',))], ('Store',)), ('Name', (10, 10), 'Cc', ('Load',)), [])]))]),
+('Module', [('Expr', (1, 0), ('DictComp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), ('Name', (1, 5), 'b', ('Load',)), [('comprehension', ('Name', (1, 11), 'w', ('Store',)), ('Name', (1, 16), 'x', ('Load',)), []), ('comprehension', ('Name', (1, 22), 'm', ('Store',)), ('Name', (1, 27), 'p', ('Load',)), [('Name', (1, 32), 'g', ('Load',))])]))]),
+('Module', [('Expr', (1, 0), ('DictComp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), ('Name', (1, 5), 'b', ('Load',)), [('comprehension', ('Tuple', (1, 11), [('Name', (1, 11), 'v', ('Store',)), ('Name', (1, 13), 'w', ('Store',))], ('Store',)), ('Name', (1, 18), 'x', ('Load',)), [])]))]),
+('Module', [('Expr', (1, 0), ('SetComp', (1, 1), ('Name', (1, 1), 'r', ('Load',)), [('comprehension', ('Name', (1, 7), 'l', ('Store',)), ('Name', (1, 12), 'x', ('Load',)), [('Name', (1, 17), 'g', ('Load',))])]))]),
+('Module', [('Expr', (1, 0), ('SetComp', (1, 1), ('Name', (1, 1), 'r', ('Load',)), [('comprehension', ('Tuple', (1, 7), [('Name', (1, 7), 'l', ('Store',)), ('Name', (1, 9), 'm', ('Store',))], ('Store',)), ('Name', (1, 14), 'x', ('Load',)), [])]))]),
]
single_results = [
('Interactive', [('Expr', (1, 0), ('BinOp', (1, 0), ('Num', (1, 0), 1), ('Add',), ('Num', (1, 2), 2)))]),
]
eval_results = [
+('Expression', ('Name', (1, 0), 'None', ('Load',))),
('Expression', ('BoolOp', (1, 0), ('And',), [('Name', (1, 0), 'a', ('Load',)), ('Name', (1, 6), 'b', ('Load',))])),
('Expression', ('BinOp', (1, 0), ('Name', (1, 0), 'a', ('Load',)), ('Add',), ('Name', (1, 4), 'b', ('Load',)))),
('Expression', ('UnaryOp', (1, 0), ('Not',), ('Name', (1, 4), 'v', ('Load',)))),
('Expression', ('Lambda', (1, 0), ('arguments', [], None, None, []), ('Name', (1, 7), 'None', ('Load',)))),
('Expression', ('Dict', (1, 0), [('Num', (1, 2), 1)], [('Num', (1, 4), 2)])),
+('Expression', ('Dict', (1, 0), [], [])),
+('Expression', ('Set', (1, 0), [('Name', (1, 1), 'None', ('Load',))])),
+('Expression', ('Dict', (1, 0), [('Num', (2, 6), 1)], [('Num', (4, 10), 2)])),
('Expression', ('ListComp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), [('comprehension', ('Name', (1, 7), 'b', ('Store',)), ('Name', (1, 12), 'c', ('Load',)), [('Name', (1, 17), 'd', ('Load',))])])),
('Expression', ('GeneratorExp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), [('comprehension', ('Name', (1, 7), 'b', ('Store',)), ('Name', (1, 12), 'c', ('Load',)), [('Name', (1, 17), 'd', ('Load',))])])),
('Expression', ('Compare', (1, 0), ('Num', (1, 0), 1), [('Lt',), ('Lt',)], [('Num', (1, 4), 2), ('Num', (1, 8), 3)])),
@@ -376,7 +551,10 @@
('Expression', ('Subscript', (1, 0), ('Name', (1, 0), 'a', ('Load',)), ('Slice', ('Name', (1, 2), 'b', ('Load',)), ('Name', (1, 4), 'c', ('Load',)), None), ('Load',))),
('Expression', ('Name', (1, 0), 'v', ('Load',))),
('Expression', ('List', (1, 0), [('Num', (1, 1), 1), ('Num', (1, 3), 2), ('Num', (1, 5), 3)], ('Load',))),
+('Expression', ('List', (1, 0), [], ('Load',))),
('Expression', ('Tuple', (1, 0), [('Num', (1, 0), 1), ('Num', (1, 2), 2), ('Num', (1, 4), 3)], ('Load',))),
+('Expression', ('Tuple', (1, 1), [('Num', (1, 1), 1), ('Num', (1, 3), 2), ('Num', (1, 5), 3)], ('Load',))),
+('Expression', ('Tuple', (1, 0), [], ('Load',))),
('Expression', ('Call', (1, 0), ('Attribute', (1, 0), ('Attribute', (1, 0), ('Attribute', (1, 0), ('Name', (1, 0), 'a', ('Load',)), 'b', ('Load',)), 'c', ('Load',)), 'd', ('Load',)), [('Subscript', (1, 8), ('Attribute', (1, 8), ('Name', (1, 8), 'a', ('Load',)), 'b', ('Load',)), ('Slice', ('Num', (1, 12), 1), ('Num', (1, 14), 2), None), ('Load',))], [], None, None)),
]
main()
--
Repository URL: http://hg.python.org/cpython
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