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from unittest import TestCase
import gast as ast
import beniget
import sys
class StrictDefUseChains(beniget.DefUseChains):
def unbound_identifier(self, name, node):
raise RuntimeError(
"W: unbound identifier '{}' at {}:{}".format(
name, node.lineno, node.col_offset
)
)
class TestGlobals(TestCase):
def checkGlobals(self, code, ref):
node = ast.parse(code)
c = StrictDefUseChains()
c.visit(node)
self.assertEqual(c.dump_definitions(node), ref)
def test_SingleFunctionDef(self):
code = "def foo(): pass"
self.checkGlobals(code, ["foo"])
def test_MultipleFunctionDef(self):
code = "def foo(): pass\ndef bar(): return"
self.checkGlobals(code, ["bar", "foo"])
def testFuntionRedefinion(self):
code = "def foo(): pass\ndef foo(): return"
self.checkGlobals(code, ["foo", "foo"])
def testFuntionNested(self):
code = "def foo():\n def bar(): return"
self.checkGlobals(code, ["foo"])
if sys.version_info.major >= 3:
def testAsyncFunctionDef(self):
code = "async def foo(): pass"
self.checkGlobals(code, ["foo"])
def testClassDef(self):
code = "class C:pass"
self.checkGlobals(code, ["C"])
def testDelClassDef(self):
code = "class C:pass\ndel C"
self.checkGlobals(code, ["C"])
def testDelClassDefReDef(self):
code = "class C:pass\ndel C\nclass C:pass"
self.checkGlobals(code, ["C", "C"])
def testNestedClassDef(self):
code = "class C:\n class D: pass"
self.checkGlobals(code, ["C"])
def testMultipleClassDef(self):
code = "class C: pass\nclass D: pass"
self.checkGlobals(code, ["C", "D"])
def testClassRedefinition(self):
code = "class C: pass\nclass C: pass"
self.checkGlobals(code, ["C", "C"])
def testClassMethodDef(self):
code = "class C:\n def some(self):pass"
self.checkGlobals(code, ["C"])
def testGlobalDef(self):
code = "x = 1"
self.checkGlobals(code, ["x"])
if sys.version_info.major >= 3:
def testGlobalAnnotatedDef(self):
code = "x : 1"
self.checkGlobals(code, ["x"])
def testMultipleGlobalDef(self):
code = "x = 1; x = 2"
self.checkGlobals(code, ["x", "x"])
def testGlobalDestructuring(self):
code = "x, y = 1, 2"
self.checkGlobals(code, ["x", "y"])
def testGlobalAugAssign(self):
code = "x = 1; x += 2"
self.checkGlobals(code, ["x"])
def testGlobalFor(self):
code = "for x in (1,2): pass"
self.checkGlobals(code, ["x"])
def testGlobalForDestructuring(self):
code = "for x, y in [(1,2)]: pass"
self.checkGlobals(code, ["x", "y"])
def testGlobalNestedFor(self):
code = "for x in (1,2):\n for y in (2, 1): pass"
self.checkGlobals(code, ["x", "y"])
def testGlobalInFor(self):
code = "for x in (1,2): y = x"
self.checkGlobals(code, ["x", "y"])
if sys.version_info >= (3, 7):
def testGlobalAsyncFor(self):
code = "async for x in (1,2): pass"
self.checkGlobals(code, ["x"])
def testGlobalInWhile(self):
code = "while True: x = 1"
self.checkGlobals(code, ["x"])
def testGlobalInIfTrueBranch(self):
code = "if 1: a = 1"
self.checkGlobals(code, ["a"])
def testGlobalInIfFalseBranch(self):
code = "if 1: pass\nelse: a = 1"
self.checkGlobals(code, ["a"])
def testGlobalInIfBothBranch(self):
code = "if 1: a = 1\nelse: a = 2"
self.checkGlobals(code, ["a", "a"])
def testGlobalInIfBothBranchDifferent(self):
code = "if 1: a = 1\nelse: b = 2"
self.checkGlobals(code, ["a", "b"])
def testGlobalWith(self):
code = "from some import foo\nwith foo() as x: pass"
self.checkGlobals(code, ["foo", "x"])
if sys.version_info >= (3, 7):
def testGlobalAsyncWith(self):
code = "from some import foo\nasync with foo() as x: pass"
self.checkGlobals(code, ["foo", "x"])
def testGlobalTry(self):
code = "try: x = 1\nexcept Exception: pass"
self.checkGlobals(code, ["x"])
def testGlobalTryExcept(self):
code = "from some import foo\ntry: foo()\nexcept Exception as e: pass"
self.checkGlobals(code, ["e", "foo"])
def testGlobalTryExceptFinally(self):
code = "try: w = 1\nexcept Exception as x: y = 1\nfinally: z = 1"
self.checkGlobals(code, ["w", "x", "y", "z"])
def testGlobalThroughKeyword(self):
code = "def foo(): global x"
self.checkGlobals(code, ["foo", "x"])
def testGlobalThroughKeywords(self):
code = "def foo(): global x, y"
self.checkGlobals(code, ["foo", "x", "y"])
def testGlobalThroughMultipleKeyword(self):
code = "def foo(): global x\ndef bar(): global x"
self.checkGlobals(code, ["bar", "foo", "x"])
def testGlobalBeforeKeyword(self):
code = "x = 1\ndef foo(): global x"
self.checkGlobals(code, ["foo", "x"])
def testGlobalsBeforeKeyword(self):
code = "x = 1\ndef foo(): global x, y"
self.checkGlobals(code, ["foo", "x", "y"])
if sys.version_info.major >= 3:
def testGlobalAfterKeyword(self):
code = "def foo(): global x\nx : 1"
self.checkGlobals(code, ["foo", "x"])
def testGlobalsAfterKeyword(self):
code = "def foo(): global x, y\ny : 1"
self.checkGlobals(code, ["foo", "x", "y"])
def testGlobalImport(self):
code = "import foo"
self.checkGlobals(code, ["foo"])
def testGlobalImports(self):
code = "import foo, bar"
self.checkGlobals(code, ["bar", "foo"])
def testGlobalImportSubModule(self):
code = "import foo.bar"
self.checkGlobals(code, ["foo"])
def testGlobalImportSubModuleAs(self):
code = "import foo.bar as foobar"
self.checkGlobals(code, ["foobar"])
def testGlobalImportAs(self):
code = "import foo as bar"
self.checkGlobals(code, ["bar"])
def testGlobalImportsAs(self):
code = "import foo as bar, foobar"
self.checkGlobals(code, ["bar", "foobar"])
def testGlobalImportFrom(self):
code = "from foo import bar"
self.checkGlobals(code, ["bar"])
def testGlobalImportFromAs(self):
code = "from foo import bar as BAR"
self.checkGlobals(code, ["BAR"])
def testGlobalImportFromStar(self):
code = "from foo import *"
self.checkGlobals(code, ["*"])
def testGlobalImportFromStarRedefine(self):
code = "from foo import *\nx+=1"
self.checkGlobals(code, ["*", "x"])
def testGlobalImportsFrom(self):
code = "from foo import bar, man"
self.checkGlobals(code, ["bar", "man"])
def testGlobalImportsFromAs(self):
code = "from foo import bar, man as maid"
self.checkGlobals(code, ["bar", "maid"])
def testGlobalListComp(self):
code = "from some import y; [1 for x in y]"
if sys.version_info.major == 2:
self.checkGlobals(code, ["x", "y"])
else:
self.checkGlobals(code, ["y"])
def testGlobalSetComp(self):
code = "from some import y; {1 for x in y}"
if sys.version_info.major == 2:
self.checkGlobals(code, ["x", "y"])
else:
self.checkGlobals(code, ["y"])
def testGlobalDictComp(self):
code = "from some import y; {1:1 for x in y}"
if sys.version_info.major == 2:
self.checkGlobals(code, ["x", "y"])
else:
self.checkGlobals(code, ["y"])
def testGlobalGeneratorExpr(self):
code = "from some import y; (1 for x in y)"
if sys.version_info.major == 2:
self.checkGlobals(code, ["x", "y"])
else:
self.checkGlobals(code, ["y"])
def testGlobalLambda(self):
code = "lambda x: x"
self.checkGlobals(code, [])
class TestClasses(TestCase):
def checkClasses(self, code, ref):
node = ast.parse(code)
c = StrictDefUseChains()
c.visit(node)
classes = [n for n in node.body if isinstance(n, ast.ClassDef)]
assert len(classes) == 1, "only one top-level function per test case"
cls = classes[0]
self.assertEqual(c.dump_definitions(cls), ref)
def test_class_method_assign(self):
code = "class C:\n def foo(self):pass\n bar = foo"
self.checkClasses(code, ["bar", "foo"])
class TestLocals(TestCase):
def checkLocals(self, code, ref):
node = ast.parse(code)
c = StrictDefUseChains()
c.visit(node)
functions = [n for n in node.body if isinstance(n, ast.FunctionDef)]
assert len(functions) == 1, "only one top-level function per test case"
f = functions[0]
self.assertEqual(c.dump_definitions(f), ref)
def testLocalFunctionDef(self):
code = "def foo(): pass"
self.checkLocals(code, [])
def testLocalFunctionDefOneArg(self):
code = "def foo(a): pass"
self.checkLocals(code, ["a"])
def testLocalFunctionDefOneArgDefault(self):
code = "def foo(a=1): pass"
self.checkLocals(code, ["a"])
def testLocalFunctionDefArgsDefault(self):
code = "def foo(a, b=1): pass"
self.checkLocals(code, ["a", "b"])
def testLocalFunctionDefStarArgs(self):
code = "def foo(a, *b): pass"
self.checkLocals(code, ["a", "b"])
def testLocalFunctionDefKwArgs(self):
code = "def foo(a, **b): pass"
self.checkLocals(code, ["a", "b"])
if sys.version_info.major >= 3:
def testLocalFunctionDefKwOnly(self):
code = "def foo(a, *, b=1): pass"
self.checkLocals(code, ["a", "b"])
if sys.version_info.major == 2:
def testLocalFunctionDefDestructureArg(self):
code = "def foo((a, b)): pass"
self.checkLocals(code, ["a", "b"])
def test_LocalAssign(self):
code = "def foo(): a = 1"
self.checkLocals(code, ["a"])
def test_LocalAssignRedef(self):
code = "def foo(a): a = 1"
self.checkLocals(code, ["a", "a"])
def test_LocalNestedFun(self):
code = "def foo(a):\n def bar(): return a\n return bar"
self.checkLocals(code, ["a", "bar"])
if sys.version_info.major >= 3:
def test_LocalNonLocalBefore(self):
code = "def foo(a):\n def bar():\n nonlocal a; a = 1\n bar(); return a"
self.checkLocals(code, ["a", "bar"])
def test_LocalNonLocalAfter(self):
code = (
"def foo():\n def bar():\n nonlocal a; a = 1\n a = 2; bar(); return a"
)
self.checkLocals(code, ["a", "bar"])
def test_LocalGlobal(self):
code = "def foo(): global a; a = 1"
self.checkLocals(code, [])
def test_ListCompInLoop(self):
code = "def foo(i):\n for j in i:\n [k for k in j]"
if sys.version_info.major == 2:
self.checkLocals(code, ["i", "j", "k"])
else:
self.checkLocals(code, ["i", "j"])
def test_AugAssignInLoop(self):
code = """
def foo(X, f):
for i in range(2):
if i == 0: A = f * X[:, i]
else: A += f * X[:, i]
return A"""
self.checkLocals(code, ["A", "X", "f", "i"])
def test_IfInWhile(self):
code = """
def foo(a):
while(a):
if a == 1: print(b)
else: b = a"""
self.checkLocals(code, ["a", "b"])
|
