def test_duplicates():
with pytest.raises(SemanticError):
read_string('''
a = 1
b = 2
a = 11
''')
def test_unused():
with pytest.raises(SemanticError):
read_string('''
def f():
x = 1
return 2
''')
def test_undefined():
with pytest.raises(SemanticError):
read_string('''
with_undefined = {
'param': dunno
}
x = another_undefined
''')
def test_cycles():
with pytest.raises(SemanticError):
read_string('''
a = a
x = {"y": y}
y = {
'good': t,
'list': [1, 2, z]
}
z = {'nested': x}
t = 1
''')
def test_unpacking():
rm = read_config('statements/funcdef.config')
assert rm.unpack([1, 2]) == 3
assert rm.nested_unpack([1, [2, 3]]) == (1, 2, 3)
assert rm.deep_unpack([[[[[[1]]]]], 2]) == (1, 2)
assert rm.single_unpack([[[1]]]) == [[1]]
with pytest.raises(TypeError):
rm.unpack(1)
with pytest.raises(ValueError):
rm.unpack([1])
with pytest.raises(ValueError):
rm.unpack([1, 2, 3])
with pytest.raises(SyntaxError):
read_string('a, b = 1, 2')
with pytest.raises(SyntaxError):
read_string('def f(x): a, *b = x; return a')
def test_entry_points(subtests, tests_path):
for path in tests_path.glob('**/*.config'):
with subtests.test(filename=path.name):
config = read_config(path)
# for each entry point the config must be readable and give the same results
for name in config._scope.keys():
source = config.render_config(name)
assert config.render_config(name) == source
assert read_string(source).render_config() == source, path
def test_update():
rm = read_string('a = 1').update(a=2)
rm2 = read_string('a = 1').string_input('a = 2')
assert rm.a == rm2.a
rm = read_string('a = 1').update(a=2).string_input('a = 3')
assert rm.a == 3
with pytest.raises(RuntimeError):
read_string('a = 1').update(a=2).render_config()
with pytest.raises(RuntimeError):
rm = read_string('a = 1')
rm.a
rm.update(a=2)
def test_comprehensions():
rm = read_config('expressions/comprehensions.config')
assert rm.everything == [
list(range(10)), [0, 6], [1, 2, 3], [1, 3], [1, 3]
]
assert rm.set_comp == {i for i in range(10)}
assert rm.dict_comp == {i: i + 1 for i in range(10)}
assert list(rm.gen_comp) == list(range(10))
assert rm.even == list(range(0, 10, 2))
with pytest.raises(SemanticError):
read_string('_ = [x for i in range(1)]')
with pytest.raises(SemanticError):
read_string('_ = [[x, i] for i in range(1)]')
with pytest.raises(SemanticError):
read_string('_ = [i for i in [[2]] if x != 2 for x in i]')
def test_import_in_string():
rm = read_string('from .expressions.literals import *')
assert rm.literals[0]
def test_read_only():
with pytest.raises(SemanticError):
read_string('''
__file__ = 1
''')
def test_exception_type():
with pytest.raises(KeyError):
read_string('''
a = {'0': 1}[0]
b = a
''').b
def test_bad_import():
with pytest.raises(NameError):
read_string('from .expressions.literals import a')
def test_injections():
with pytest.raises(SemanticError):
ResourceManager(injections={'print': int})
assert read_string('a = 1 + b', injections={'b': 14}).a == 15
def test_bad_shortcut():
with pytest.raises(ImportError):
read_string('from a.b import *')
