summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Demo/parser/unparse.py316
-rw-r--r--Lib/test/contextmanager.py66
-rw-r--r--Lib/test/nested.py80
-rw-r--r--Lib/test/test_ast.py356
-rw-r--r--Lib/test/test_with.py1120
5 files changed, 969 insertions, 969 deletions
diff --git a/Demo/parser/unparse.py b/Demo/parser/unparse.py
index 53b57b3..72691b5 100644
--- a/Demo/parser/unparse.py
+++ b/Demo/parser/unparse.py
@@ -1,158 +1,158 @@
-"Usage: unparse.py <path to source file>"
-import sys
-
-class Unparser:
- """Methods in this class recursively traverse an AST and
- output source code for the abstract syntax; original formatting
- is disregarged. """
-
- def __init__(self, tree, file = sys.stdout):
- """Unparser(tree, file=sys.stdout) -> None.
- Print the source for tree to file."""
- self.f = file
- self._indent = 0
- self.dispatch(tree)
- self.f.flush()
-
- def fill(self, text = ""):
- "Indent a piece of text, according to the current indentation level"
- self.f.write("\n"+" "*self._indent + text)
-
- def write(self, text):
- "Append a piece of text to the current line."
- self.f.write(text)
-
- def enter(self):
- "Print ':', and increase the indentation."
- self.write(":")
- self._indent += 1
-
- def leave(self):
- "Decrease the indentation level."
- self._indent -= 1
-
- def dispatch(self, tree):
- "Dispatcher function, dispatching tree type T to method _T."
- if isinstance(tree, list):
- for t in tree:
- self.dispatch(t)
- return
- meth = getattr(self, "_"+tree.__class__.__name__)
- meth(tree)
-
-
- ############### Unparsing methods ######################
- # There should be one method per concrete grammar type #
- # Constructors should be grouped by sum type. Ideally, #
- # this would follow the order in the grammar, but #
- # currently doesn't. #
- ########################################################
-
- def _Module(self, tree):
- for stmt in tree.body:
- self.dispatch(stmt)
-
- # stmt
- def _Expr(self, tree):
- self.fill()
- self.dispatch(tree.value)
-
- def _Import(self, t):
- self.fill("import ")
- first = True
- for a in t.names:
- if first:
- first = False
- else:
- self.write(", ")
- self.write(a.name)
- if a.asname:
- self.write(" as "+a.asname)
-
- def _Assign(self, t):
- self.fill()
- for target in t.targets:
- self.dispatch(target)
- self.write(" = ")
- self.dispatch(t.value)
-
- def _ClassDef(self, t):
- self.write("\n")
- self.fill("class "+t.name)
- if t.bases:
- self.write("(")
- for a in t.bases:
- self.dispatch(a)
- self.write(", ")
- self.write(")")
- self.enter()
- self.dispatch(t.body)
- self.leave()
-
- def _FunctionDef(self, t):
- self.write("\n")
- self.fill("def "+t.name + "(")
- self.dispatch(t.args)
- self.enter()
- self.dispatch(t.body)
- self.leave()
-
- def _If(self, t):
- self.fill("if ")
- self.dispatch(t.test)
- self.enter()
- # XXX elif?
- self.dispatch(t.body)
- self.leave()
- if t.orelse:
- self.fill("else")
- self.enter()
- self.dispatch(t.orelse)
- self.leave()
-
- # expr
- def _Str(self, tree):
- self.write(repr(tree.s))
-
- def _Name(self, t):
- self.write(t.id)
-
- def _List(self, t):
- self.write("[")
- for e in t.elts:
- self.dispatch(e)
- self.write(", ")
- self.write("]")
-
- unop = {"Invert":"~", "Not": "not", "UAdd":"+", "USub":"-"}
- def _UnaryOp(self, t):
- self.write(self.unop[t.op.__class__.__name__])
- self.write("(")
- self.dispatch(t.operand)
- self.write(")")
-
- # others
- def _arguments(self, t):
- first = True
- # XXX t.defaults
- for a in t.args:
- if first:first = False
- else: self.write(", ")
- self.dispatch(a)
- if t.vararg:
- if first:first = False
- else: self.write(", ")
- self.write("*"+t.vararg)
- if t.kwarg:
- if first:first = False
- else: self.write(", ")
- self.write("**"+self.kwarg)
- self.write(")")
-
-def roundtrip(filename):
- source = open(filename).read()
- tree = compile(source, filename, "exec", 0x400)
- Unparser(tree)
-
-if __name__=='__main__':
- roundtrip(sys.argv[1])
+"Usage: unparse.py <path to source file>"
+import sys
+
+class Unparser:
+ """Methods in this class recursively traverse an AST and
+ output source code for the abstract syntax; original formatting
+ is disregarged. """
+
+ def __init__(self, tree, file = sys.stdout):
+ """Unparser(tree, file=sys.stdout) -> None.
+ Print the source for tree to file."""
+ self.f = file
+ self._indent = 0
+ self.dispatch(tree)
+ self.f.flush()
+
+ def fill(self, text = ""):
+ "Indent a piece of text, according to the current indentation level"
+ self.f.write("\n"+" "*self._indent + text)
+
+ def write(self, text):
+ "Append a piece of text to the current line."
+ self.f.write(text)
+
+ def enter(self):
+ "Print ':', and increase the indentation."
+ self.write(":")
+ self._indent += 1
+
+ def leave(self):
+ "Decrease the indentation level."
+ self._indent -= 1
+
+ def dispatch(self, tree):
+ "Dispatcher function, dispatching tree type T to method _T."
+ if isinstance(tree, list):
+ for t in tree:
+ self.dispatch(t)
+ return
+ meth = getattr(self, "_"+tree.__class__.__name__)
+ meth(tree)
+
+
+ ############### Unparsing methods ######################
+ # There should be one method per concrete grammar type #
+ # Constructors should be grouped by sum type. Ideally, #
+ # this would follow the order in the grammar, but #
+ # currently doesn't. #
+ ########################################################
+
+ def _Module(self, tree):
+ for stmt in tree.body:
+ self.dispatch(stmt)
+
+ # stmt
+ def _Expr(self, tree):
+ self.fill()
+ self.dispatch(tree.value)
+
+ def _Import(self, t):
+ self.fill("import ")
+ first = True
+ for a in t.names:
+ if first:
+ first = False
+ else:
+ self.write(", ")
+ self.write(a.name)
+ if a.asname:
+ self.write(" as "+a.asname)
+
+ def _Assign(self, t):
+ self.fill()
+ for target in t.targets:
+ self.dispatch(target)
+ self.write(" = ")
+ self.dispatch(t.value)
+
+ def _ClassDef(self, t):
+ self.write("\n")
+ self.fill("class "+t.name)
+ if t.bases:
+ self.write("(")
+ for a in t.bases:
+ self.dispatch(a)
+ self.write(", ")
+ self.write(")")
+ self.enter()
+ self.dispatch(t.body)
+ self.leave()
+
+ def _FunctionDef(self, t):
+ self.write("\n")
+ self.fill("def "+t.name + "(")
+ self.dispatch(t.args)
+ self.enter()
+ self.dispatch(t.body)
+ self.leave()
+
+ def _If(self, t):
+ self.fill("if ")
+ self.dispatch(t.test)
+ self.enter()
+ # XXX elif?
+ self.dispatch(t.body)
+ self.leave()
+ if t.orelse:
+ self.fill("else")
+ self.enter()
+ self.dispatch(t.orelse)
+ self.leave()
+
+ # expr
+ def _Str(self, tree):
+ self.write(repr(tree.s))
+
+ def _Name(self, t):
+ self.write(t.id)
+
+ def _List(self, t):
+ self.write("[")
+ for e in t.elts:
+ self.dispatch(e)
+ self.write(", ")
+ self.write("]")
+
+ unop = {"Invert":"~", "Not": "not", "UAdd":"+", "USub":"-"}
+ def _UnaryOp(self, t):
+ self.write(self.unop[t.op.__class__.__name__])
+ self.write("(")
+ self.dispatch(t.operand)
+ self.write(")")
+
+ # others
+ def _arguments(self, t):
+ first = True
+ # XXX t.defaults
+ for a in t.args:
+ if first:first = False
+ else: self.write(", ")
+ self.dispatch(a)
+ if t.vararg:
+ if first:first = False
+ else: self.write(", ")
+ self.write("*"+t.vararg)
+ if t.kwarg:
+ if first:first = False
+ else: self.write(", ")
+ self.write("**"+self.kwarg)
+ self.write(")")
+
+def roundtrip(filename):
+ source = open(filename).read()
+ tree = compile(source, filename, "exec", 0x400)
+ Unparser(tree)
+
+if __name__=='__main__':
+ roundtrip(sys.argv[1])
diff --git a/Lib/test/contextmanager.py b/Lib/test/contextmanager.py
index e8b0894..07fe61c 100644
--- a/Lib/test/contextmanager.py
+++ b/Lib/test/contextmanager.py
@@ -1,33 +1,33 @@
-class GeneratorContextManager(object):
- def __init__(self, gen):
- self.gen = gen
-
- def __context__(self):
- return self
-
- def __enter__(self):
- try:
- return self.gen.next()
- except StopIteration:
- raise RuntimeError("generator didn't yield")
-
- def __exit__(self, type, value, traceback):
- if type is None:
- try:
- self.gen.next()
- except StopIteration:
- return
- else:
- raise RuntimeError("generator didn't stop")
- else:
- try:
- self.gen.throw(type, value, traceback)
- except (type, StopIteration):
- return
- else:
- raise RuntimeError("generator caught exception")
-
-def contextmanager(func):
- def helper(*args, **kwds):
- return GeneratorContextManager(func(*args, **kwds))
- return helper
+class GeneratorContextManager(object):
+ def __init__(self, gen):
+ self.gen = gen
+
+ def __context__(self):
+ return self
+
+ def __enter__(self):
+ try:
+ return self.gen.next()
+ except StopIteration:
+ raise RuntimeError("generator didn't yield")
+
+ def __exit__(self, type, value, traceback):
+ if type is None:
+ try:
+ self.gen.next()
+ except StopIteration:
+ return
+ else:
+ raise RuntimeError("generator didn't stop")
+ else:
+ try:
+ self.gen.throw(type, value, traceback)
+ except (type, StopIteration):
+ return
+ else:
+ raise RuntimeError("generator caught exception")
+
+def contextmanager(func):
+ def helper(*args, **kwds):
+ return GeneratorContextManager(func(*args, **kwds))
+ return helper
diff --git a/Lib/test/nested.py b/Lib/test/nested.py
index a20cf43..b5030e0 100644
--- a/Lib/test/nested.py
+++ b/Lib/test/nested.py
@@ -1,40 +1,40 @@
-import sys
-from collections import deque
-
-
-class nested(object):
- def __init__(self, *contexts):
- self.contexts = contexts
- self.entered = None
-
- def __context__(self):
- return self
-
- def __enter__(self):
- if self.entered is not None:
- raise RuntimeError("Context is not reentrant")
- self.entered = deque()
- vars = []
- try:
- for context in self.contexts:
- mgr = context.__context__()
- vars.append(mgr.__enter__())
- self.entered.appendleft(mgr)
- except:
- self.__exit__(*sys.exc_info())
- raise
- return vars
-
- def __exit__(self, *exc_info):
- # Behave like nested with statements
- # first in, last out
- # New exceptions override old ones
- ex = exc_info
- for mgr in self.entered:
- try:
- mgr.__exit__(*ex)
- except:
- ex = sys.exc_info()
- self.entered = None
- if ex is not exc_info:
- raise ex[0], ex[1], ex[2]
+import sys
+from collections import deque
+
+
+class nested(object):
+ def __init__(self, *contexts):
+ self.contexts = contexts
+ self.entered = None
+
+ def __context__(self):
+ return self
+
+ def __enter__(self):
+ if self.entered is not None:
+ raise RuntimeError("Context is not reentrant")
+ self.entered = deque()
+ vars = []
+ try:
+ for context in self.contexts:
+ mgr = context.__context__()
+ vars.append(mgr.__enter__())
+ self.entered.appendleft(mgr)
+ except:
+ self.__exit__(*sys.exc_info())
+ raise
+ return vars
+
+ def __exit__(self, *exc_info):
+ # Behave like nested with statements
+ # first in, last out
+ # New exceptions override old ones
+ ex = exc_info
+ for mgr in self.entered:
+ try:
+ mgr.__exit__(*ex)
+ except:
+ ex = sys.exc_info()
+ self.entered = None
+ if ex is not exc_info:
+ raise ex[0], ex[1], ex[2]
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index f83dc92..82bb140 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -1,178 +1,178 @@
-import sys, itertools
-
-def to_tuple(t):
- if t is None or isinstance(t, (basestring, int, long, complex)):
- return t
- elif isinstance(t, list):
- return [to_tuple(e) for e in t]
- result = [t.__class__.__name__]
- if t._fields is None:
- return tuple(result)
- for f in t._fields:
- result.append(to_tuple(getattr(t, f)))
- return tuple(result)
-
-# These tests are compiled through "exec"
-# There should be atleast one test per statement
-exec_tests = [
- # FunctionDef
- "def f(): pass",
- # ClassDef
- "class C:pass",
- # Return
- "def f():return 1",
- # Delete
- "del v",
- # Assign
- "v = 1",
- # AugAssign
- "v += 1",
- # Print
- "print >>f, 1, ",
- # For
- "for v in v:pass",
- # While
- "while v:pass",
- # If
- "if v:pass",
- # Raise
- "raise Exception, 'string'",
- # TryExcept
- "try:\n pass\nexcept Exception:\n pass",
- # TryFinally
- "try:\n pass\nfinally:\n pass",
- # Assert
- "assert v",
- # Import
- "import sys",
- # ImportFrom
- "from sys import v",
- # Exec
- "exec 'v'",
- # Global
- "global v",
- # Expr
- "1",
- # Pass,
- "pass",
- # Break
- "break",
- # Continue
- "continue",
-]
-
-# These are compiled through "single"
-# because of overlap with "eval", it just tests what
-# can't be tested with "eval"
-single_tests = [
- "1+2"
-]
-
-# These are compiled through "eval"
-# It should test all expressions
-eval_tests = [
- # BoolOp
- "a and b",
- # BinOp
- "a + b",
- # UnaryOp
- "not v",
- # Lambda
- "lambda:None",
- # Dict
- "{ 1:2 }",
- # ListComp
- "[a for b in c if d]",
- # GeneratorExp
- "(a for b in c if d)",
- # Yield - yield expressions can't work outside a function
- #
- # Compare
- "1 < 2 < 3",
- # Call
- "f(1,2,c=3,*d,**e)",
- # Repr
- "`v`",
- # Num
- "10L",
- # Str
- "'string'",
- # Attribute
- "a.b",
- # Subscript
- "a[b:c]",
- # Name
- "v",
- # List
- "[1,2,3]",
- # Tuple
- "1,2,3"
-]
-
-# TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension
-# excepthandler, arguments, keywords, alias
-
-if __name__=='__main__' and sys.argv[1:] == ['-g']:
- for statements, kind in ((exec_tests, "exec"), (single_tests, "single"), (eval_tests, "eval")):
- print kind+"_results = ["
- for s in statements:
- print repr(to_tuple(compile(s, "?", kind, 0x400)))+","
- print "]"
- print "run_tests()"
- raise SystemExit
-
-def run_tests():
- for input, output, kind in ((exec_tests, exec_results, "exec"),
- (single_tests, single_results, "single"),
- (eval_tests, eval_results, "eval")):
- for i, o in itertools.izip(input, output):
- assert to_tuple(compile(i, "?", kind, 0x400)) == o
-
-#### EVERYTHING BELOW IS GENERATED #####
-exec_results = [
-('Module', [('FunctionDef', 'f', ('arguments', [], None, None, []), [('Pass',)], [])]),
-('Module', [('ClassDef', 'C', [], [('Pass',)])]),
-('Module', [('FunctionDef', 'f', ('arguments', [], None, None, []), [('Return', ('Num', 1))], [])]),
-('Module', [('Delete', [('Name', 'v', ('Del',))])]),
-('Module', [('Assign', [('Name', 'v', ('Store',))], ('Num', 1))]),
-('Module', [('AugAssign', ('Name', 'v', ('Load',)), ('Add',), ('Num', 1))]),
-('Module', [('Print', ('Name', 'f', ('Load',)), [('Num', 1)], False)]),
-('Module', [('For', ('Name', 'v', ('Store',)), ('Name', 'v', ('Load',)), [('Pass',)], [])]),
-('Module', [('While', ('Name', 'v', ('Load',)), [('Pass',)], [])]),
-('Module', [('If', ('Name', 'v', ('Load',)), [('Pass',)], [])]),
-('Module', [('Raise', ('Name', 'Exception', ('Load',)), ('Str', 'string'), None)]),
-('Module', [('TryExcept', [('Pass',)], [('excepthandler', ('Name', 'Exception', ('Load',)), None, [('Pass',)])], [])]),
-('Module', [('TryFinally', [('Pass',)], [('Pass',)])]),
-('Module', [('Assert', ('Name', 'v', ('Load',)), None)]),
-('Module', [('Import', [('alias', 'sys', None)])]),
-('Module', [('ImportFrom', 'sys', [('alias', 'v', None)], 0)]),
-('Module', [('Exec', ('Str', 'v'), None, None)]),
-('Module', [('Global', ['v'])]),
-('Module', [('Expr', ('Num', 1))]),
-('Module', [('Pass',)]),
-('Module', [('Break',)]),
-('Module', [('Continue',)]),
-]
-single_results = [
-('Interactive', [('Expr', ('BinOp', ('Num', 1), ('Add',), ('Num', 2)))]),
-]
-eval_results = [
-('Expression', ('BoolOp', ('And',), [('Name', 'a', ('Load',)), ('Name', 'b', ('Load',))])),
-('Expression', ('BinOp', ('Name', 'a', ('Load',)), ('Add',), ('Name', 'b', ('Load',)))),
-('Expression', ('UnaryOp', ('Not',), ('Name', 'v', ('Load',)))),
-('Expression', ('Lambda', ('arguments', [], None, None, []), ('Name', 'None', ('Load',)))),
-('Expression', ('Dict', [('Num', 1)], [('Num', 2)])),
-('Expression', ('ListComp', ('Name', 'a', ('Load',)), [('comprehension', ('Name', 'b', ('Store',)), ('Name', 'c', ('Load',)), [('Name', 'd', ('Load',))])])),
-('Expression', ('GeneratorExp', ('Name', 'a', ('Load',)), [('comprehension', ('Name', 'b', ('Store',)), ('Name', 'c', ('Load',)), [('Name', 'd', ('Load',))])])),
-('Expression', ('Compare', ('Num', 1), [('Lt',), ('Lt',)], [('Num', 2), ('Num', 3)])),
-('Expression', ('Call', ('Name', 'f', ('Load',)), [('Num', 1), ('Num', 2)], [('keyword', 'c', ('Num', 3))], ('Name', 'd', ('Load',)), ('Name', 'e', ('Load',)))),
-('Expression', ('Repr', ('Name', 'v', ('Load',)))),
-('Expression', ('Num', 10L)),
-('Expression', ('Str', 'string')),
-('Expression', ('Attribute', ('Name', 'a', ('Load',)), 'b', ('Load',))),
-('Expression', ('Subscript', ('Name', 'a', ('Load',)), ('Slice', ('Name', 'b', ('Load',)), ('Name', 'c', ('Load',)), None), ('Load',))),
-('Expression', ('Name', 'v', ('Load',))),
-('Expression', ('List', [('Num', 1), ('Num', 2), ('Num', 3)], ('Load',))),
-('Expression', ('Tuple', [('Num', 1), ('Num', 2), ('Num', 3)], ('Load',))),
-]
-run_tests()
+import sys, itertools
+
+def to_tuple(t):
+ if t is None or isinstance(t, (basestring, int, long, complex)):
+ return t
+ elif isinstance(t, list):
+ return [to_tuple(e) for e in t]
+ result = [t.__class__.__name__]
+ if t._fields is None:
+ return tuple(result)
+ for f in t._fields:
+ result.append(to_tuple(getattr(t, f)))
+ return tuple(result)
+
+# These tests are compiled through "exec"
+# There should be atleast one test per statement
+exec_tests = [
+ # FunctionDef
+ "def f(): pass",
+ # ClassDef
+ "class C:pass",
+ # Return
+ "def f():return 1",
+ # Delete
+ "del v",
+ # Assign
+ "v = 1",
+ # AugAssign
+ "v += 1",
+ # Print
+ "print >>f, 1, ",
+ # For
+ "for v in v:pass",
+ # While
+ "while v:pass",
+ # If
+ "if v:pass",
+ # Raise
+ "raise Exception, 'string'",
+ # TryExcept
+ "try:\n pass\nexcept Exception:\n pass",
+ # TryFinally
+ "try:\n pass\nfinally:\n pass",
+ # Assert
+ "assert v",
+ # Import
+ "import sys",
+ # ImportFrom
+ "from sys import v",
+ # Exec
+ "exec 'v'",
+ # Global
+ "global v",
+ # Expr
+ "1",
+ # Pass,
+ "pass",
+ # Break
+ "break",
+ # Continue
+ "continue",
+]
+
+# These are compiled through "single"
+# because of overlap with "eval", it just tests what
+# can't be tested with "eval"
+single_tests = [
+ "1+2"
+]
+
+# These are compiled through "eval"
+# It should test all expressions
+eval_tests = [
+ # BoolOp
+ "a and b",
+ # BinOp
+ "a + b",
+ # UnaryOp
+ "not v",
+ # Lambda
+ "lambda:None",
+ # Dict
+ "{ 1:2 }",
+ # ListComp
+ "[a for b in c if d]",
+ # GeneratorExp
+ "(a for b in c if d)",
+ # Yield - yield expressions can't work outside a function
+ #
+ # Compare
+ "1 < 2 < 3",
+ # Call
+ "f(1,2,c=3,*d,**e)",
+ # Repr
+ "`v`",
+ # Num
+ "10L",
+ # Str
+ "'string'",
+ # Attribute
+ "a.b",
+ # Subscript
+ "a[b:c]",
+ # Name
+ "v",
+ # List
+ "[1,2,3]",
+ # Tuple
+ "1,2,3"
+]
+
+# TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension
+# excepthandler, arguments, keywords, alias
+
+if __name__=='__main__' and sys.argv[1:] == ['-g']:
+ for statements, kind in ((exec_tests, "exec"), (single_tests, "single"), (eval_tests, "eval")):
+ print kind+"_results = ["
+ for s in statements:
+ print repr(to_tuple(compile(s, "?", kind, 0x400)))+","
+ print "]"
+ print "run_tests()"
+ raise SystemExit
+
+def run_tests():
+ for input, output, kind in ((exec_tests, exec_results, "exec"),
+ (single_tests, single_results, "single"),
+ (eval_tests, eval_results, "eval")):
+ for i, o in itertools.izip(input, output):
+ assert to_tuple(compile(i, "?", kind, 0x400)) == o
+
+#### EVERYTHING BELOW IS GENERATED #####
+exec_results = [
+('Module', [('FunctionDef', 'f', ('arguments', [], None, None, []), [('Pass',)], [])]),
+('Module', [('ClassDef', 'C', [], [('Pass',)])]),
+('Module', [('FunctionDef', 'f', ('arguments', [], None, None, []), [('Return', ('Num', 1))], [])]),
+('Module', [('Delete', [('Name', 'v', ('Del',))])]),
+('Module', [('Assign', [('Name', 'v', ('Store',))], ('Num', 1))]),
+('Module', [('AugAssign', ('Name', 'v', ('Load',)), ('Add',), ('Num', 1))]),
+('Module', [('Print', ('Name', 'f', ('Load',)), [('Num', 1)], False)]),
+('Module', [('For', ('Name', 'v', ('Store',)), ('Name', 'v', ('Load',)), [('Pass',)], [])]),
+('Module', [('While', ('Name', 'v', ('Load',)), [('Pass',)], [])]),
+('Module', [('If', ('Name', 'v', ('Load',)), [('Pass',)], [])]),
+('Module', [('Raise', ('Name', 'Exception', ('Load',)), ('Str', 'string'), None)]),
+('Module', [('TryExcept', [('Pass',)], [('excepthandler', ('Name', 'Exception', ('Load',)), None, [('Pass',)])], [])]),
+('Module', [('TryFinally', [('Pass',)], [('Pass',)])]),
+('Module', [('Assert', ('Name', 'v', ('Load',)), None)]),
+('Module', [('Import', [('alias', 'sys', None)])]),
+('Module', [('ImportFrom', 'sys', [('alias', 'v', None)], 0)]),
+('Module', [('Exec', ('Str', 'v'), None, None)]),
+('Module', [('Global', ['v'])]),
+('Module', [('Expr', ('Num', 1))]),
+('Module', [('Pass',)]),
+('Module', [('Break',)]),
+('Module', [('Continue',)]),
+]
+single_results = [
+('Interactive', [('Expr', ('BinOp', ('Num', 1), ('Add',), ('Num', 2)))]),
+]
+eval_results = [
+('Expression', ('BoolOp', ('And',), [('Name', 'a', ('Load',)), ('Name', 'b', ('Load',))])),
+('Expression', ('BinOp', ('Name', 'a', ('Load',)), ('Add',), ('Name', 'b', ('Load',)))),
+('Expression', ('UnaryOp', ('Not',), ('Name', 'v', ('Load',)))),
+('Expression', ('Lambda', ('arguments', [], None, None, []), ('Name', 'None', ('Load',)))),
+('Expression', ('Dict', [('Num', 1)], [('Num', 2)])),
+('Expression', ('ListComp', ('Name', 'a', ('Load',)), [('comprehension', ('Name', 'b', ('Store',)), ('Name', 'c', ('Load',)), [('Name', 'd', ('Load',))])])),
+('Expression', ('GeneratorExp', ('Name', 'a', ('Load',)), [('comprehension', ('Name', 'b', ('Store',)), ('Name', 'c', ('Load',)), [('Name', 'd', ('Load',))])])),
+('Expression', ('Compare', ('Num', 1), [('Lt',), ('Lt',)], [('Num', 2), ('Num', 3)])),
+('Expression', ('Call', ('Name', 'f', ('Load',)), [('Num', 1), ('Num', 2)], [('keyword', 'c', ('Num', 3))], ('Name', 'd', ('Load',)), ('Name', 'e', ('Load',)))),
+('Expression', ('Repr', ('Name', 'v', ('Load',)))),
+('Expression', ('Num', 10L)),
+('Expression', ('Str', 'string')),
+('Expression', ('Attribute', ('Name', 'a', ('Load',)), 'b', ('Load',))),
+('Expression', ('Subscript', ('Name', 'a', ('Load',)), ('Slice', ('Name', 'b', ('Load',)), ('Name', 'c', ('Load',)), None), ('Load',))),
+('Expression', ('Name', 'v', ('Load',))),
+('Expression', ('List', [('Num', 1), ('Num', 2), ('Num', 3)], ('Load',))),
+('Expression', ('Tuple', [('Num', 1), ('Num', 2), ('Num', 3)], ('Load',))),
+]
+run_tests()
diff --git a/Lib/test/test_with.py b/Lib/test/test_with.py
index 3f32830..8423ee1 100644
--- a/Lib/test/test_with.py
+++ b/Lib/test/test_with.py
@@ -1,560 +1,560 @@
-#!/usr/bin/env python
-
-"""Unit tests for the with statement specified in PEP 343."""
-
-__author__ = "Mike Bland"
-__email__ = "mbland at acm dot org"
-
-import unittest
-from test.contextmanager import GeneratorContextManager
-from test.nested import nested
-from test.test_support import run_unittest
-
-
-class MockContextManager(GeneratorContextManager):
- def __init__(self, gen):
- GeneratorContextManager.__init__(self, gen)
- self.context_called = False
- self.enter_called = False
- self.exit_called = False
- self.exit_args = None
-
- def __context__(self):
- self.context_called = True
- return GeneratorContextManager.__context__(self)
-
- def __enter__(self):
- self.enter_called = True
- return GeneratorContextManager.__enter__(self)
-
- def __exit__(self, type, value, traceback):
- self.exit_called = True
- self.exit_args = (type, value, traceback)
- return GeneratorContextManager.__exit__(self, type, value, traceback)
-
-
-def mock_contextmanager(func):
- def helper(*args, **kwds):
- return MockContextManager(func(*args, **kwds))
- return helper
-
-
-class MockResource(object):
- def __init__(self):
- self.yielded = False
- self.stopped = False
-
-
-@mock_contextmanager
-def mock_contextmanager_generator():
- mock = MockResource()
- try:
- mock.yielded = True
- yield mock
- finally:
- mock.stopped = True
-
-
-class MockNested(nested):
- def __init__(self, *contexts):
- nested.__init__(self, *contexts)
- self.context_called = False
- self.enter_called = False
- self.exit_called = False
- self.exit_args = None
-
- def __context__(self):
- self.context_called = True
- return nested.__context__(self)
-
- def __enter__(self):
- self.enter_called = True
- return nested.__enter__(self)
-
- def __exit__(self, *exc_info):
- self.exit_called = True
- self.exit_args = exc_info
- return nested.__exit__(self, *exc_info)
-
-
-class FailureTestCase(unittest.TestCase):
- def testNameError(self):
- def fooNotDeclared():
- with foo: pass
- self.assertRaises(NameError, fooNotDeclared)
-
- def testContextAttributeError(self):
- class LacksContext(object):
- def __enter__(self):
- pass
-
- def __exit__(self, type, value, traceback):
- pass
-
- def fooLacksContext():
- foo = LacksContext()
- with foo: pass
- self.assertRaises(AttributeError, fooLacksContext)
-
- def testEnterAttributeError(self):
- class LacksEnter(object):
- def __context__(self):
- pass
-
- def __exit__(self, type, value, traceback):
- pass
-
- def fooLacksEnter():
- foo = LacksEnter()
- with foo: pass
- self.assertRaises(AttributeError, fooLacksEnter)
-
- def testExitAttributeError(self):
- class LacksExit(object):
- def __context__(self):
- pass
-
- def __enter__(self):
- pass
-
- def fooLacksExit():
- foo = LacksExit()
- with foo: pass
- self.assertRaises(AttributeError, fooLacksExit)
-
- def assertRaisesSyntaxError(self, codestr):
- def shouldRaiseSyntaxError(s):
- compile(s, '', 'single')
- self.assertRaises(SyntaxError, shouldRaiseSyntaxError, codestr)
-
- def testAssignmentToNoneError(self):
- self.assertRaisesSyntaxError('with mock as None:\n pass')
- self.assertRaisesSyntaxError(
- 'with mock as (None):\n'
- ' pass')
-
- def testAssignmentToEmptyTupleError(self):
- self.assertRaisesSyntaxError(
- 'with mock as ():\n'
- ' pass')
-
- def testAssignmentToTupleOnlyContainingNoneError(self):
- self.assertRaisesSyntaxError('with mock as None,:\n pass')
- self.assertRaisesSyntaxError(
- 'with mock as (None,):\n'
- ' pass')
-
- def testAssignmentToTupleContainingNoneError(self):
- self.assertRaisesSyntaxError(
- 'with mock as (foo, None, bar):\n'
- ' pass')
-
- def testContextThrows(self):
- class ContextThrows(object):
- def __context__(self):
- raise RuntimeError("Context threw")
-
- def shouldThrow():
- ct = ContextThrows()
- self.foo = None
- with ct as self.foo:
- pass
- self.assertRaises(RuntimeError, shouldThrow)
- self.assertEqual(self.foo, None)
-
- def testEnterThrows(self):
- class EnterThrows(object):
- def __context__(self):
- return self
-
- def __enter__(self):
- raise RuntimeError("Context threw")
-
- def __exit__(self, *args):
- pass
-
- def shouldThrow():
- ct = EnterThrows()
- self.foo = None
- with ct as self.foo:
- pass
- self.assertRaises(RuntimeError, shouldThrow)
- self.assertEqual(self.foo, None)
-
- def testExitThrows(self):
- class ExitThrows(object):
- def __context__(self):
- return self
- def __enter__(self):
- return
- def __exit__(self, *args):
- raise RuntimeError(42)
- def shouldThrow():
- with ExitThrows():
- pass
- self.assertRaises(RuntimeError, shouldThrow)
-
-class ContextmanagerAssertionMixin(object):
- TEST_EXCEPTION = RuntimeError("test exception")
-
- def assertInWithManagerInvariants(self, mock_manager):
- self.assertTrue(mock_manager.context_called)
- self.assertTrue(mock_manager.enter_called)
- self.assertFalse(mock_manager.exit_called)
- self.assertEqual(mock_manager.exit_args, None)
-
- def assertAfterWithManagerInvariants(self, mock_manager, exit_args):
- self.assertTrue(mock_manager.context_called)
- self.assertTrue(mock_manager.enter_called)
- self.assertTrue(mock_manager.exit_called)
- self.assertEqual(mock_manager.exit_args, exit_args)
-
- def assertAfterWithManagerInvariantsNoError(self, mock_manager):
- self.assertAfterWithManagerInvariants(mock_manager,
- (None, None, None))
-
- def assertInWithGeneratorInvariants(self, mock_generator):
- self.assertTrue(mock_generator.yielded)
- self.assertFalse(mock_generator.stopped)
-
- def assertAfterWithGeneratorInvariantsNoError(self, mock_generator):
- self.assertTrue(mock_generator.yielded)
- self.assertTrue(mock_generator.stopped)
-
- def raiseTestException(self):
- raise self.TEST_EXCEPTION
-
- def assertAfterWithManagerInvariantsWithError(self, mock_manager):
- self.assertTrue(mock_manager.context_called)
- self.assertTrue(mock_manager.enter_called)
- self.assertTrue(mock_manager.exit_called)
- self.assertEqual(mock_manager.exit_args[0], RuntimeError)
- self.assertEqual(mock_manager.exit_args[1], self.TEST_EXCEPTION)
-
- def assertAfterWithGeneratorInvariantsWithError(self, mock_generator):
- self.assertTrue(mock_generator.yielded)
- self.assertTrue(mock_generator.stopped)
-
-
-class NonexceptionalTestCase(unittest.TestCase, ContextmanagerAssertionMixin):
- def testInlineGeneratorSyntax(self):
- with mock_contextmanager_generator():
- pass
-
- def testUnboundGenerator(self):
- mock = mock_contextmanager_generator()
- with mock:
- pass
- self.assertAfterWithManagerInvariantsNoError(mock)
-
- def testInlineGeneratorBoundSyntax(self):
- with mock_contextmanager_generator() as foo:
- self.assertInWithGeneratorInvariants(foo)
- # FIXME: In the future, we'll try to keep the bound names from leaking
- self.assertAfterWithGeneratorInvariantsNoError(foo)
-
- def testInlineGeneratorBoundToExistingVariable(self):
- foo = None
- with mock_contextmanager_generator() as foo:
- self.assertInWithGeneratorInvariants(foo)
- self.assertAfterWithGeneratorInvariantsNoError(foo)
-
- def testInlineGeneratorBoundToDottedVariable(self):
- with mock_contextmanager_generator() as self.foo:
- self.assertInWithGeneratorInvariants(self.foo)
- self.assertAfterWithGeneratorInvariantsNoError(self.foo)
-
- def testBoundGenerator(self):
- mock = mock_contextmanager_generator()
- with mock as foo:
- self.assertInWithGeneratorInvariants(foo)
- self.assertInWithManagerInvariants(mock)
- self.assertAfterWithGeneratorInvariantsNoError(foo)
- self.assertAfterWithManagerInvariantsNoError(mock)
-
- def testNestedSingleStatements(self):
- mock_a = mock_contextmanager_generator()
- with mock_a as foo:
- mock_b = mock_contextmanager_generator()
- with mock_b as bar:
- self.assertInWithManagerInvariants(mock_a)
- self.assertInWithManagerInvariants(mock_b)
- self.assertInWithGeneratorInvariants(foo)
- self.assertInWithGeneratorInvariants(bar)
- self.assertAfterWithManagerInvariantsNoError(mock_b)
- self.assertAfterWithGeneratorInvariantsNoError(bar)
- self.assertInWithManagerInvariants(mock_a)
- self.assertInWithGeneratorInvariants(foo)
- self.assertAfterWithManagerInvariantsNoError(mock_a)
- self.assertAfterWithGeneratorInvariantsNoError(foo)
-
-
-class NestedNonexceptionalTestCase(unittest.TestCase,
- ContextmanagerAssertionMixin):
- def testSingleArgInlineGeneratorSyntax(self):
- with nested(mock_contextmanager_generator()):
- pass
-
- def testSingleArgUnbound(self):
- mock_contextmanager = mock_contextmanager_generator()
- mock_nested = MockNested(mock_contextmanager)
- with mock_nested:
- self.assertInWithManagerInvariants(mock_contextmanager)
- self.assertInWithManagerInvariants(mock_nested)
- self.assertAfterWithManagerInvariantsNoError(mock_contextmanager)
- self.assertAfterWithManagerInvariantsNoError(mock_nested)
-
- def testSingleArgBoundToNonTuple(self):
- m = mock_contextmanager_generator()
- # This will bind all the arguments to nested() into a single list
- # assigned to foo.
- with nested(m) as foo:
- self.assertInWithManagerInvariants(m)
- self.assertAfterWithManagerInvariantsNoError(m)
-
- def testSingleArgBoundToSingleElementParenthesizedList(self):
- m = mock_contextmanager_generator()
- # This will bind all the arguments to nested() into a single list
- # assigned to foo.
- # FIXME: what should this do: with nested(m) as (foo,):
- with nested(m) as (foo):
- self.assertInWithManagerInvariants(m)
- self.assertAfterWithManagerInvariantsNoError(m)
-
- def testSingleArgBoundToMultipleElementTupleError(self):
- def shouldThrowValueError():
- with nested(mock_contextmanager_generator()) as (foo, bar):
- pass
- self.assertRaises(ValueError, shouldThrowValueError)
-
- def testSingleArgUnbound(self):
- mock_contextmanager = mock_contextmanager_generator()
- mock_nested = MockNested(mock_contextmanager)
- with mock_nested:
- self.assertInWithManagerInvariants(mock_contextmanager)
- self.assertInWithManagerInvariants(mock_nested)
- self.assertAfterWithManagerInvariantsNoError(mock_contextmanager)
- self.assertAfterWithManagerInvariantsNoError(mock_nested)
-
- def testMultipleArgUnbound(self):
- m = mock_contextmanager_generator()
- n = mock_contextmanager_generator()
- o = mock_contextmanager_generator()
- mock_nested = MockNested(m, n, o)
- with mock_nested:
- self.assertInWithManagerInvariants(m)
- self.assertInWithManagerInvariants(n)
- self.assertInWithManagerInvariants(o)
- self.assertInWithManagerInvariants(mock_nested)
- self.assertAfterWithManagerInvariantsNoError(m)
- self.assertAfterWithManagerInvariantsNoError(n)
- self.assertAfterWithManagerInvariantsNoError(o)
- self.assertAfterWithManagerInvariantsNoError(mock_nested)
-
- def testMultipleArgBound(self):
- mock_nested = MockNested(mock_contextmanager_generator(),
- mock_contextmanager_generator(), mock_contextmanager_generator())
- with mock_nested as (m, n, o):
- self.assertInWithGeneratorInvariants(m)
- self.assertInWithGeneratorInvariants(n)
- self.assertInWithGeneratorInvariants(o)
- self.assertInWithManagerInvariants(mock_nested)
- self.assertAfterWithGeneratorInvariantsNoError(m)
- self.assertAfterWithGeneratorInvariantsNoError(n)
- self.assertAfterWithGeneratorInvariantsNoError(o)
- self.assertAfterWithManagerInvariantsNoError(mock_nested)
-
-
-class ExceptionalTestCase(unittest.TestCase, ContextmanagerAssertionMixin):
- def testSingleResource(self):
- cm = mock_contextmanager_generator()
- def shouldThrow():
- with cm as self.resource:
- self.assertInWithManagerInvariants(cm)
- self.assertInWithGeneratorInvariants(self.resource)
- self.raiseTestException()
- self.assertRaises(RuntimeError, shouldThrow)
- self.assertAfterWithManagerInvariantsWithError(cm)
- self.assertAfterWithGeneratorInvariantsWithError(self.resource)
-
- def testNestedSingleStatements(self):
- mock_a = mock_contextmanager_generator()
- mock_b = mock_contextmanager_generator()
- def shouldThrow():
- with mock_a as self.foo:
- with mock_b as self.bar:
- self.assertInWithManagerInvariants(mock_a)
- self.assertInWithManagerInvariants(mock_b)
- self.assertInWithGeneratorInvariants(self.foo)
- self.assertInWithGeneratorInvariants(self.bar)
- self.raiseTestException()
- self.assertRaises(RuntimeError, shouldThrow)
- self.assertAfterWithManagerInvariantsWithError(mock_a)
- self.assertAfterWithManagerInvariantsWithError(mock_b)
- self.assertAfterWithGeneratorInvariantsWithError(self.foo)
- self.assertAfterWithGeneratorInvariantsWithError(self.bar)
-
- def testMultipleResourcesInSingleStatement(self):
- cm_a = mock_contextmanager_generator()
- cm_b = mock_contextmanager_generator()
- mock_nested = MockNested(cm_a, cm_b)
- def shouldThrow():
- with mock_nested as (self.resource_a, self.resource_b):
- self.assertInWithManagerInvariants(cm_a)
- self.assertInWithManagerInvariants(cm_b)
- self.assertInWithManagerInvariants(mock_nested)
- self.assertInWithGeneratorInvariants(self.resource_a)
- self.assertInWithGeneratorInvariants(self.resource_b)
- self.raiseTestException()
- self.assertRaises(RuntimeError, shouldThrow)
- self.assertAfterWithManagerInvariantsWithError(cm_a)
- self.assertAfterWithManagerInvariantsWithError(cm_b)
- self.assertAfterWithManagerInvariantsWithError(mock_nested)
- self.assertAfterWithGeneratorInvariantsWithError(self.resource_a)
- self.assertAfterWithGeneratorInvariantsWithError(self.resource_b)
-
- def testNestedExceptionBeforeInnerStatement(self):
- mock_a = mock_contextmanager_generator()
- mock_b = mock_contextmanager_generator()
- self.bar = None
- def shouldThrow():
- with mock_a as self.foo:
- self.assertInWithManagerInvariants(mock_a)
- self.assertInWithGeneratorInvariants(self.foo)
- self.raiseTestException()
- with mock_b as self.bar:
- pass
- self.assertRaises(RuntimeError, shouldThrow)
- self.assertAfterWithManagerInvariantsWithError(mock_a)
- self.assertAfterWithGeneratorInvariantsWithError(self.foo)
-
- # The inner statement stuff should never have been touched
- self.assertEqual(self.bar, None)
- self.assertFalse(mock_b.context_called)
- self.assertFalse(mock_b.enter_called)
- self.assertFalse(mock_b.exit_called)
- self.assertEqual(mock_b.exit_args, None)
-
- def testNestedExceptionAfterInnerStatement(self):
- mock_a = mock_contextmanager_generator()
- mock_b = mock_contextmanager_generator()
- def shouldThrow():
- with mock_a as self.foo:
- with mock_b as self.bar:
- self.assertInWithManagerInvariants(mock_a)
- self.assertInWithManagerInvariants(mock_b)
- self.assertInWithGeneratorInvariants(self.foo)
- self.assertInWithGeneratorInvariants(self.bar)
- self.raiseTestException()
- self.assertRaises(RuntimeError, shouldThrow)
- self.assertAfterWithManagerInvariantsWithError(mock_a)
- self.assertAfterWithManagerInvariantsNoError(mock_b)
- self.assertAfterWithGeneratorInvariantsWithError(self.foo)
- self.assertAfterWithGeneratorInvariantsNoError(self.bar)
-
-
-class NonLocalFlowControlTestCase(unittest.TestCase):
-
- def testWithBreak(self):
- counter = 0
- while True:
- counter += 1
- with mock_contextmanager_generator():
- counter += 10
- break
- counter += 100 # Not reached
- self.assertEqual(counter, 11)
-
- def testWithContinue(self):
- counter = 0
- while True:
- counter += 1
- if counter > 2:
- break
- with mock_contextmanager_generator():
- counter += 10
- continue
- counter += 100 # Not reached
- self.assertEqual(counter, 12)
-
- def testWithReturn(self):
- def foo():
- counter = 0
- while True:
- counter += 1
- with mock_contextmanager_generator():
- counter += 10
- return counter
- counter += 100 # Not reached
- self.assertEqual(foo(), 11)
-
- def testWithYield(self):
- def gen():
- with mock_contextmanager_generator():
- yield 12
- yield 13
- x = list(gen())
- self.assertEqual(x, [12, 13])
-
- def testWithRaise(self):
- counter = 0
- try:
- counter += 1
- with mock_contextmanager_generator():
- counter += 10
- raise RuntimeError
- counter += 100 # Not reached
- except RuntimeError:
- self.assertEqual(counter, 11)
- else:
- self.fail("Didn't raise RuntimeError")
-
-
-class AssignmentTargetTestCase(unittest.TestCase):
-
- def testSingleComplexTarget(self):
- targets = {1: [0, 1, 2]}
- with mock_contextmanager_generator() as targets[1][0]:
- self.assertEqual(targets.keys(), [1])
- self.assertEqual(targets[1][0].__class__, MockResource)
- with mock_contextmanager_generator() as targets.values()[0][1]:
- self.assertEqual(targets.keys(), [1])
- self.assertEqual(targets[1][1].__class__, MockResource)
- with mock_contextmanager_generator() as targets[2]:
- keys = targets.keys()
- keys.sort()
- self.assertEqual(keys, [1, 2])
- class C: pass
- blah = C()
- with mock_contextmanager_generator() as blah.foo:
- self.assertEqual(hasattr(blah, "foo"), True)
-
- def testMultipleComplexTargets(self):
- class C:
- def __context__(self): return self
- def __enter__(self): return 1, 2, 3
- def __exit__(self, *a): pass
- targets = {1: [0, 1, 2]}
- with C() as (targets[1][0], targets[1][1], targets[1][2]):
- self.assertEqual(targets, {1: [1, 2, 3]})
- with C() as (targets.values()[0][2], targets.values()[0][1], targets.values()[0][0]):
- self.assertEqual(targets, {1: [3, 2, 1]})
- with C() as (targets[1], targets[2], targets[3]):
- self.assertEqual(targets, {1: 1, 2: 2, 3: 3})
- class B: pass
- blah = B()
- with C() as (blah.one, blah.two, blah.three):
- self.assertEqual(blah.one, 1)
- self.assertEqual(blah.two, 2)
- self.assertEqual(blah.three, 3)
-
-
-def test_main():
- run_unittest(FailureTestCase, NonexceptionalTestCase,
- NestedNonexceptionalTestCase, ExceptionalTestCase,
- NonLocalFlowControlTestCase,
- AssignmentTargetTestCase)
-
-
-if __name__ == '__main__':
- test_main()
+#!/usr/bin/env python
+
+"""Unit tests for the with statement specified in PEP 343."""
+
+__author__ = "Mike Bland"
+__email__ = "mbland at acm dot org"
+
+import unittest
+from test.contextmanager import GeneratorContextManager
+from test.nested import nested
+from test.test_support import run_unittest
+
+
+class MockContextManager(GeneratorContextManager):
+ def __init__(self, gen):
+ GeneratorContextManager.__init__(self, gen)
+ self.context_called = False
+ self.enter_called = False
+ self.exit_called = False
+ self.exit_args = None
+
+ def __context__(self):
+ self.context_called = True
+ return GeneratorContextManager.__context__(self)
+
+ def __enter__(self):
+ self.enter_called = True
+ return GeneratorContextManager.__enter__(self)
+
+ def __exit__(self, type, value, traceback):
+ self.exit_called = True
+ self.exit_args = (type, value, traceback)
+ return GeneratorContextManager.__exit__(self, type, value, traceback)
+
+
+def mock_contextmanager(func):
+ def helper(*args, **kwds):
+ return MockContextManager(func(*args, **kwds))
+ return helper
+
+
+class MockResource(object):
+ def __init__(self):
+ self.yielded = False
+ self.stopped = False
+
+
+@mock_contextmanager
+def mock_contextmanager_generator():
+ mock = MockResource()
+ try:
+ mock.yielded = True
+ yield mock
+ finally:
+ mock.stopped = True
+
+
+class MockNested(nested):
+ def __init__(self, *contexts):
+ nested.__init__(self, *contexts)
+ self.context_called = False
+ self.enter_called = False
+ self.exit_called = False
+ self.exit_args = None
+
+ def __context__(self):
+ self.context_called = True
+ return nested.__context__(self)
+
+ def __enter__(self):
+ self.enter_called = True
+ return nested.__enter__(self)
+
+ def __exit__(self, *exc_info):
+ self.exit_called = True
+ self.exit_args = exc_info
+ return nested.__exit__(self, *exc_info)
+
+
+class FailureTestCase(unittest.TestCase):
+ def testNameError(self):
+ def fooNotDeclared():
+ with foo: pass
+ self.assertRaises(NameError, fooNotDeclared)
+
+ def testContextAttributeError(self):
+ class LacksContext(object):
+ def __enter__(self):
+ pass
+
+ def __exit__(self, type, value, traceback):
+ pass
+
+ def fooLacksContext():
+ foo = LacksContext()
+ with foo: pass
+ self.assertRaises(AttributeError, fooLacksContext)
+
+ def testEnterAttributeError(self):
+ class LacksEnter(object):
+ def __context__(self):
+ pass
+
+ def __exit__(self, type, value, traceback):
+ pass
+
+ def fooLacksEnter():
+ foo = LacksEnter()
+ with foo: pass
+ self.assertRaises(AttributeError, fooLacksEnter)
+
+ def testExitAttributeError(self):
+ class LacksExit(object):
+ def __context__(self):
+ pass
+
+ def __enter__(self):
+ pass
+
+ def fooLacksExit():
+ foo = LacksExit()
+ with foo: pass
+ self.assertRaises(AttributeError, fooLacksExit)
+
+ def assertRaisesSyntaxError(self, codestr):
+ def shouldRaiseSyntaxError(s):
+ compile(s, '', 'single')
+ self.assertRaises(SyntaxError, shouldRaiseSyntaxError, codestr)
+
+ def testAssignmentToNoneError(self):
+ self.assertRaisesSyntaxError('with mock as None:\n pass')
+ self.assertRaisesSyntaxError(
+ 'with mock as (None):\n'
+ ' pass')
+
+ def testAssignmentToEmptyTupleError(self):
+ self.assertRaisesSyntaxError(
+ 'with mock as ():\n'
+ ' pass')
+
+ def testAssignmentToTupleOnlyContainingNoneError(self):
+ self.assertRaisesSyntaxError('with mock as None,:\n pass')
+ self.assertRaisesSyntaxError(
+ 'with mock as (None,):\n'
+ ' pass')
+
+ def testAssignmentToTupleContainingNoneError(self):
+ self.assertRaisesSyntaxError(
+ 'with mock as (foo, None, bar):\n'
+ ' pass')
+
+ def testContextThrows(self):
+ class ContextThrows(object):
+ def __context__(self):
+ raise RuntimeError("Context threw")
+
+ def shouldThrow():
+ ct = ContextThrows()
+ self.foo = None
+ with ct as self.foo:
+ pass
+ self.assertRaises(RuntimeError, shouldThrow)
+ self.assertEqual(self.foo, None)
+
+ def testEnterThrows(self):
+ class EnterThrows(object):
+ def __context__(self):
+ return self
+
+ def __enter__(self):
+ raise RuntimeError("Context threw")
+
+ def __exit__(self, *args):
+ pass
+
+ def shouldThrow():
+ ct = EnterThrows()
+ self.foo = None
+ with ct as self.foo:
+ pass
+ self.assertRaises(RuntimeError, shouldThrow)
+ self.assertEqual(self.foo, None)
+
+ def testExitThrows(self):
+ class ExitThrows(object):
+ def __context__(self):
+ return self
+ def __enter__(self):
+ return
+ def __exit__(self, *args):
+ raise RuntimeError(42)
+ def shouldThrow():
+ with ExitThrows():
+ pass
+ self.assertRaises(RuntimeError, shouldThrow)
+
+class ContextmanagerAssertionMixin(object):
+ TEST_EXCEPTION = RuntimeError("test exception")
+
+ def assertInWithManagerInvariants(self, mock_manager):
+ self.assertTrue(mock_manager.context_called)
+ self.assertTrue(mock_manager.enter_called)
+ self.assertFalse(mock_manager.exit_called)
+ self.assertEqual(mock_manager.exit_args, None)
+
+ def assertAfterWithManagerInvariants(self, mock_manager, exit_args):
+ self.assertTrue(mock_manager.context_called)
+ self.assertTrue(mock_manager.enter_called)
+ self.assertTrue(mock_manager.exit_called)
+ self.assertEqual(mock_manager.exit_args, exit_args)
+
+ def assertAfterWithManagerInvariantsNoError(self, mock_manager):
+ self.assertAfterWithManagerInvariants(mock_manager,
+ (None, None, None))
+
+ def assertInWithGeneratorInvariants(self, mock_generator):
+ self.assertTrue(mock_generator.yielded)
+ self.assertFalse(mock_generator.stopped)
+
+ def assertAfterWithGeneratorInvariantsNoError(self, mock_generator):
+ self.assertTrue(mock_generator.yielded)
+ self.assertTrue(mock_generator.stopped)
+
+ def raiseTestException(self):
+ raise self.TEST_EXCEPTION
+
+ def assertAfterWithManagerInvariantsWithError(self, mock_manager):
+ self.assertTrue(mock_manager.context_called)
+ self.assertTrue(mock_manager.enter_called)
+ self.assertTrue(mock_manager.exit_called)
+ self.assertEqual(mock_manager.exit_args[0], RuntimeError)
+ self.assertEqual(mock_manager.exit_args[1], self.TEST_EXCEPTION)
+
+ def assertAfterWithGeneratorInvariantsWithError(self, mock_generator):
+ self.assertTrue(mock_generator.yielded)
+ self.assertTrue(mock_generator.stopped)
+
+
+class NonexceptionalTestCase(unittest.TestCase, ContextmanagerAssertionMixin):
+ def testInlineGeneratorSyntax(self):
+ with mock_contextmanager_generator():
+ pass
+
+ def testUnboundGenerator(self):
+ mock = mock_contextmanager_generator()
+ with mock:
+ pass
+ self.assertAfterWithManagerInvariantsNoError(mock)
+
+ def testInlineGeneratorBoundSyntax(self):
+ with mock_contextmanager_generator() as foo:
+ self.assertInWithGeneratorInvariants(foo)
+ # FIXME: In the future, we'll try to keep the bound names from leaking
+ self.assertAfterWithGeneratorInvariantsNoError(foo)
+
+ def testInlineGeneratorBoundToExistingVariable(self):
+ foo = None
+ with mock_contextmanager_generator() as foo:
+ self.assertInWithGeneratorInvariants(foo)
+ self.assertAfterWithGeneratorInvariantsNoError(foo)
+
+ def testInlineGeneratorBoundToDottedVariable(self):
+ with mock_contextmanager_generator() as self.foo:
+ self.assertInWithGeneratorInvariants(self.foo)
+ self.assertAfterWithGeneratorInvariantsNoError(self.foo)
+
+ def testBoundGenerator(self):
+ mock = mock_contextmanager_generator()
+ with mock as foo:
+ self.assertInWithGeneratorInvariants(foo)
+ self.assertInWithManagerInvariants(mock)
+ self.assertAfterWithGeneratorInvariantsNoError(foo)
+ self.assertAfterWithManagerInvariantsNoError(mock)
+
+ def testNestedSingleStatements(self):
+ mock_a = mock_contextmanager_generator()
+ with mock_a as foo:
+ mock_b = mock_contextmanager_generator()
+ with mock_b as bar:
+ self.assertInWithManagerInvariants(mock_a)
+ self.assertInWithManagerInvariants(mock_b)
+ self.assertInWithGeneratorInvariants(foo)
+ self.assertInWithGeneratorInvariants(bar)
+ self.assertAfterWithManagerInvariantsNoError(mock_b)
+ self.assertAfterWithGeneratorInvariantsNoError(bar)
+ self.assertInWithManagerInvariants(mock_a)
+ self.assertInWithGeneratorInvariants(foo)
+ self.assertAfterWithManagerInvariantsNoError(mock_a)
+ self.assertAfterWithGeneratorInvariantsNoError(foo)
+
+
+class NestedNonexceptionalTestCase(unittest.TestCase,
+ ContextmanagerAssertionMixin):
+ def testSingleArgInlineGeneratorSyntax(self):
+ with nested(mock_contextmanager_generator()):
+ pass
+
+ def testSingleArgUnbound(self):
+ mock_contextmanager = mock_contextmanager_generator()
+ mock_nested = MockNested(mock_contextmanager)
+ with mock_nested:
+ self.assertInWithManagerInvariants(mock_contextmanager)
+ self.assertInWithManagerInvariants(mock_nested)
+ self.assertAfterWithManagerInvariantsNoError(mock_contextmanager)
+ self.assertAfterWithManagerInvariantsNoError(mock_nested)
+
+ def testSingleArgBoundToNonTuple(self):
+ m = mock_contextmanager_generator()
+ # This will bind all the arguments to nested() into a single list
+ # assigned to foo.
+ with nested(m) as foo:
+ self.assertInWithManagerInvariants(m)
+ self.assertAfterWithManagerInvariantsNoError(m)
+
+ def testSingleArgBoundToSingleElementParenthesizedList(self):
+ m = mock_contextmanager_generator()
+ # This will bind all the arguments to nested() into a single list
+ # assigned to foo.
+ # FIXME: what should this do: with nested(m) as (foo,):
+ with nested(m) as (foo):
+ self.assertInWithManagerInvariants(m)
+ self.assertAfterWithManagerInvariantsNoError(m)
+
+ def testSingleArgBoundToMultipleElementTupleError(self):
+ def shouldThrowValueError():
+ with nested(mock_contextmanager_generator()) as (foo, bar):
+ pass
+ self.assertRaises(ValueError, shouldThrowValueError)
+
+ def testSingleArgUnbound(self):
+ mock_contextmanager = mock_contextmanager_generator()
+ mock_nested = MockNested(mock_contextmanager)
+ with mock_nested:
+ self.assertInWithManagerInvariants(mock_contextmanager)
+ self.assertInWithManagerInvariants(mock_nested)
+ self.assertAfterWithManagerInvariantsNoError(mock_contextmanager)
+ self.assertAfterWithManagerInvariantsNoError(mock_nested)
+
+ def testMultipleArgUnbound(self):
+ m = mock_contextmanager_generator()
+ n = mock_contextmanager_generator()
+ o = mock_contextmanager_generator()
+ mock_nested = MockNested(m, n, o)
+ with mock_nested:
+ self.assertInWithManagerInvariants(m)
+ self.assertInWithManagerInvariants(n)
+ self.assertInWithManagerInvariants(o)
+ self.assertInWithManagerInvariants(mock_nested)
+ self.assertAfterWithManagerInvariantsNoError(m)
+ self.assertAfterWithManagerInvariantsNoError(n)
+ self.assertAfterWithManagerInvariantsNoError(o)
+ self.assertAfterWithManagerInvariantsNoError(mock_nested)
+
+ def testMultipleArgBound(self):
+ mock_nested = MockNested(mock_contextmanager_generator(),
+ mock_contextmanager_generator(), mock_contextmanager_generator())
+ with mock_nested as (m, n, o):
+ self.assertInWithGeneratorInvariants(m)
+ self.assertInWithGeneratorInvariants(n)
+ self.assertInWithGeneratorInvariants(o)
+ self.assertInWithManagerInvariants(mock_nested)
+ self.assertAfterWithGeneratorInvariantsNoError(m)
+ self.assertAfterWithGeneratorInvariantsNoError(n)
+ self.assertAfterWithGeneratorInvariantsNoError(o)
+ self.assertAfterWithManagerInvariantsNoError(mock_nested)
+
+
+class ExceptionalTestCase(unittest.TestCase, ContextmanagerAssertionMixin):
+ def testSingleResource(self):
+ cm = mock_contextmanager_generator()
+ def shouldThrow():
+ with cm as self.resource:
+ self.assertInWithManagerInvariants(cm)
+ self.assertInWithGeneratorInvariants(self.resource)
+ self.raiseTestException()
+ self.assertRaises(RuntimeError, shouldThrow)
+ self.assertAfterWithManagerInvariantsWithError(cm)
+ self.assertAfterWithGeneratorInvariantsWithError(self.resource)
+
+ def testNestedSingleStatements(self):
+ mock_a = mock_contextmanager_generator()
+ mock_b = mock_contextmanager_generator()
+ def shouldThrow():
+ with mock_a as self.foo:
+ with mock_b as self.bar:
+ self.assertInWithManagerInvariants(mock_a)
+ self.assertInWithManagerInvariants(mock_b)
+ self.assertInWithGeneratorInvariants(self.foo)
+ self.assertInWithGeneratorInvariants(self.bar)
+ self.raiseTestException()
+ self.assertRaises(RuntimeError, shouldThrow)
+ self.assertAfterWithManagerInvariantsWithError(mock_a)
+ self.assertAfterWithManagerInvariantsWithError(mock_b)
+ self.assertAfterWithGeneratorInvariantsWithError(self.foo)
+ self.assertAfterWithGeneratorInvariantsWithError(self.bar)
+
+ def testMultipleResourcesInSingleStatement(self):
+ cm_a = mock_contextmanager_generator()
+ cm_b = mock_contextmanager_generator()
+ mock_nested = MockNested(cm_a, cm_b)
+ def shouldThrow():
+ with mock_nested as (self.resource_a, self.resource_b):
+ self.assertInWithManagerInvariants(cm_a)
+ self.assertInWithManagerInvariants(cm_b)
+ self.assertInWithManagerInvariants(mock_nested)
+ self.assertInWithGeneratorInvariants(self.resource_a)
+ self.assertInWithGeneratorInvariants(self.resource_b)
+ self.raiseTestException()
+ self.assertRaises(RuntimeError, shouldThrow)
+ self.assertAfterWithManagerInvariantsWithError(cm_a)
+ self.assertAfterWithManagerInvariantsWithError(cm_b)
+ self.assertAfterWithManagerInvariantsWithError(mock_nested)
+ self.assertAfterWithGeneratorInvariantsWithError(self.resource_a)
+ self.assertAfterWithGeneratorInvariantsWithError(self.resource_b)
+
+ def testNestedExceptionBeforeInnerStatement(self):
+ mock_a = mock_contextmanager_generator()
+ mock_b = mock_contextmanager_generator()
+ self.bar = None
+ def shouldThrow():
+ with mock_a as self.foo:
+ self.assertInWithManagerInvariants(mock_a)
+ self.assertInWithGeneratorInvariants(self.foo)
+ self.raiseTestException()
+ with mock_b as self.bar:
+ pass
+ self.assertRaises(RuntimeError, shouldThrow)
+ self.assertAfterWithManagerInvariantsWithError(mock_a)
+ self.assertAfterWithGeneratorInvariantsWithError(self.foo)
+
+ # The inner statement stuff should never have been touched
+ self.assertEqual(self.bar, None)
+ self.assertFalse(mock_b.context_called)
+ self.assertFalse(mock_b.enter_called)
+ self.assertFalse(mock_b.exit_called)
+ self.assertEqual(mock_b.exit_args, None)
+
+ def testNestedExceptionAfterInnerStatement(self):
+ mock_a = mock_contextmanager_generator()
+ mock_b = mock_contextmanager_generator()
+ def shouldThrow():
+ with mock_a as self.foo:
+ with mock_b as self.bar:
+ self.assertInWithManagerInvariants(mock_a)
+ self.assertInWithManagerInvariants(mock_b)
+ self.assertInWithGeneratorInvariants(self.foo)
+ self.assertInWithGeneratorInvariants(self.bar)
+ self.raiseTestException()
+ self.assertRaises(RuntimeError, shouldThrow)
+ self.assertAfterWithManagerInvariantsWithError(mock_a)
+ self.assertAfterWithManagerInvariantsNoError(mock_b)
+ self.assertAfterWithGeneratorInvariantsWithError(self.foo)
+ self.assertAfterWithGeneratorInvariantsNoError(self.bar)
+
+
+class NonLocalFlowControlTestCase(unittest.TestCase):
+
+ def testWithBreak(self):
+ counter = 0
+ while True:
+ counter += 1
+ with mock_contextmanager_generator():
+ counter += 10
+ break
+ counter += 100 # Not reached
+ self.assertEqual(counter, 11)
+
+ def testWithContinue(self):
+ counter = 0
+ while True:
+ counter += 1
+ if counter > 2:
+ break
+ with mock_contextmanager_generator():
+ counter += 10
+ continue
+ counter += 100 # Not reached
+ self.assertEqual(counter, 12)
+
+ def testWithReturn(self):
+ def foo():
+ counter = 0
+ while True:
+ counter += 1
+ with mock_contextmanager_generator():
+ counter += 10
+ return counter
+ counter += 100 # Not reached
+ self.assertEqual(foo(), 11)
+
+ def testWithYield(self):
+ def gen():
+ with mock_contextmanager_generator():
+ yield 12
+ yield 13
+ x = list(gen())
+ self.assertEqual(x, [12, 13])
+
+ def testWithRaise(self):
+ counter = 0
+ try:
+ counter += 1
+ with mock_contextmanager_generator():
+ counter += 10
+ raise RuntimeError
+ counter += 100 # Not reached
+ except RuntimeError:
+ self.assertEqual(counter, 11)
+ else:
+ self.fail("Didn't raise RuntimeError")
+
+
+class AssignmentTargetTestCase(unittest.TestCase):
+
+ def testSingleComplexTarget(self):
+ targets = {1: [0, 1, 2]}
+ with mock_contextmanager_generator() as targets[1][0]:
+ self.assertEqual(targets.keys(), [1])
+ self.assertEqual(targets[1][0].__class__, MockResource)
+ with mock_contextmanager_generator() as targets.values()[0][1]:
+ self.assertEqual(targets.keys(), [1])
+ self.assertEqual(targets[1][1].__class__, MockResource)
+ with mock_contextmanager_generator() as targets[2]:
+ keys = targets.keys()
+ keys.sort()
+ self.assertEqual(keys, [1, 2])
+ class C: pass
+ blah = C()
+ with mock_contextmanager_generator() as blah.foo:
+ self.assertEqual(hasattr(blah, "foo"), True)
+
+ def testMultipleComplexTargets(self):
+ class C:
+ def __context__(self): return self
+ def __enter__(self): return 1, 2, 3
+ def __exit__(self, *a): pass
+ targets = {1: [0, 1, 2]}
+ with C() as (targets[1][0], targets[1][1], targets[1][2]):
+ self.assertEqual(targets, {1: [1, 2, 3]})
+ with C() as (targets.values()[0][2], targets.values()[0][1], targets.values()[0][0]):
+ self.assertEqual(targets, {1: [3, 2, 1]})
+ with C() as (targets[1], targets[2], targets[3]):
+ self.assertEqual(targets, {1: 1, 2: 2, 3: 3})
+ class B: pass
+ blah = B()
+ with C() as (blah.one, blah.two, blah.three):
+ self.assertEqual(blah.one, 1)
+ self.assertEqual(blah.two, 2)
+ self.assertEqual(blah.three, 3)
+
+
+def test_main():
+ run_unittest(FailureTestCase, NonexceptionalTestCase,
+ NestedNonexceptionalTestCase, ExceptionalTestCase,
+ NonLocalFlowControlTestCase,
+ AssignmentTargetTestCase)
+
+
+if __name__ == '__main__':
+ test_main()
generated by cgit v0.12 at 2024-12-03 19:22:04 (GMT)