def test_exclude_types():
parser = Parser(exclude=[LOCAL])
add, clear = parser.parse(dedent('''
a = 1
def f():
b, c = 1
a + b
'''))
assert [n.name for n in add] == ['a']
assert clear == []
add, clear = parser.parse(dedent('''
a = 1
def f():
b, c = 1
a + c
'''))
assert add == []
assert clear == []
add, clear = parser.parse(dedent('''
a = 1
def f():
b, c = 1
g + c
'''))
assert [n.name for n in add] == ['g']
assert [n.name for n in clear] == ['a']
add, clear = parser.parse(dedent('''
a = 1
def f():
b, c = 1
0 + c
'''))
assert add == []
assert [n.name for n in clear] == ['g']
def test_diff():
"""The id of a saved name should remain the same so that we can remove
it later by ID."""
parser = Parser()
add0, rem = parser.parse('foo')
add, rem = parser.parse('foo ')
add, rem = parser.parse('foo = 1')
assert add0[0].id == rem[0].id
def test_detect_symtable_syntax_error():
"""Some syntax errors (such as duplicate parameter names) aren't directly
raised when compile() is called on the code, but cause problems later.
"""
parser = Parser()
with pytest.raises(UnparsableError):
parser.parse('def foo(x, x): pass')
assert parser.syntax_errors[-1].lineno == 1
def test_syntax_error_fail():
"""Syntax errors which can't be fixed with a single change."""
parser = Parser()
with pytest.raises(UnparsableError):
parser.parse('(\n(')
with pytest.raises(UnparsableError):
parser.parse(')\n(')
# Intentionally no difference to previous one
with pytest.raises(UnparsableError):
parser.parse(')\n(')
def test_refresh_names():
"""Clear everything if more than one line changes."""
parser = Parser()
add, clear = parser.parse(dedent('''
def foo():
x = y
'''))
assert len(add) == 3
assert len(clear) == 0
add, clear = parser.parse(dedent('''
def foo():
x = y
'''))
assert len(add) == 0
assert len(clear) == 0
add, clear = parser.parse(dedent('''
def foo():
z = y
'''))
assert len(add) == 1
assert len(clear) == 1
add, clear = parser.parse(
dedent('''
def foo():
z = y
a, b
'''))
assert len(add) == 5
assert len(clear) == 3
add, clear = parser.parse(
dedent('''
def foo():
z = y
c, d
'''))
assert len(add) == 2
assert len(clear) == 2
add, clear = parser.parse(
dedent('''
def foo():
z = y, k
1, 1
'''))
assert len(add) == 4
assert len(clear) == 5
def minor_change(c1, c2):
return Parser._minor_change(c1, c2)
def test_make_nodes():
"""parser._make_nodes should work without a `lines` argument."""
parser = Parser()
parser._make_nodes('x')
def test_exclude_types_same_nodes():
parser = Parser(exclude=[UNRESOLVED])
add, clear = parser.parse('a, a')
assert len(add) == 0
assert [n.pos for n in parser.same_nodes((1, 0))] == [(1, 0), (1, 3)]
def make_parser(code):
parser = Parser()
add, remove = parser.parse(dedent(code))
return parser
def parse(code):
add, remove = Parser().parse(dedent(code))
assert len(remove) == 0
for node in add:
node.base_table()
return add
