def test_str_method_calls():
template = '''{{ x.endswith(suffix) }}'''
call_ast = parse(template).find(nodes.Call)
rtype, struct = visit_call(call_ast, get_scalar_context(call_ast))
expected_rtype = Boolean()
assert rtype == expected_rtype
expected_struct = Dictionary({
'x': String(label='x', linenos=[1]),
# TODO suffix must be in struct too
})
assert struct == expected_struct
template = '''{{ x.split(separator) }}'''
call_ast = parse(template).find(nodes.Call)
ctx = Context(return_struct_cls=Unknown,
predicted_struct=Unknown.from_ast(call_ast))
rtype, struct = visit_call(call_ast, ctx)
expected_rtype = List(String())
assert rtype == expected_rtype
expected_struct = Dictionary({
'x':
String(label='x', linenos=[1]),
'separator':
String(label='separator', linenos=[1]),
})
assert struct == expected_struct
def test_dict_call():
template = '''{{ dict(x=\ndict(\na=1, b=2), y=a) }}'''
call_ast = parse(template).find(nodes.Call)
rtype, struct = visit_call(
call_ast, Context(predicted_struct=Unknown.from_ast(call_ast)))
expected_rtype = Dictionary(
{
'x':
Dictionary(
{
'a': Number(linenos=[3], constant=True, value=1),
'b': Number(linenos=[3], constant=True, value=2)
},
linenos=[2],
constant=True),
'y':
Unknown(label='a', linenos=[3]),
},
linenos=[1],
constant=True)
assert rtype == expected_rtype
expected_struct = Dictionary({
'a': Unknown(label='a', linenos=[3]),
})
assert struct == expected_struct
def test_unique_filter():
template = '{{ values|unique }}'
ast = parse(template).find(nodes.Filter)
unknown_ctx = Context(predicted_struct=Unknown.from_ast(ast))
rtype, struct = visit_filter(ast, unknown_ctx)
assert rtype == Unknown(label='values', linenos=[1])
assert struct == Dictionary({
'values':
List(Unknown(), label='values', linenos=[1]),
})
def test_lipsum_call():
template = '{{ lipsum(n) }}'
ast = parse(template).find(nodes.Call)
rtype, struct = visit_call(ast, Context(predicted_struct=Unknown()))
expected_rtype = String()
assert rtype == expected_rtype
expected_struct = Dictionary({
'n': Scalar(label='n', linenos=[1]), # TODO must be Number
})
assert struct == expected_struct
def test_range_call():
template = '{{ range(n) }}'
ast = parse(template).find(nodes.Call)
rtype, struct = visit_call(ast, Context(predicted_struct=Unknown()))
expected_rtype = List(Number())
assert rtype == expected_rtype
expected_struct = Dictionary({
'n': Number(label='n', linenos=[1]),
})
assert struct == expected_struct
def test_batch_and_slice_filters():
for filter in ('batch', 'slice'):
template = '{{ items|' + filter + '(3, " ") }}'
ast = parse(template).find(nodes.Filter)
unknown_ctx = Context(predicted_struct=Unknown.from_ast(ast))
rtype, struct = visit_filter(ast, unknown_ctx)
expected_rtype = List(List(Unknown(), linenos=[1]), linenos=[1])
assert rtype == expected_rtype
expected_struct = Dictionary({
'items':
List(Unknown(), label='items', linenos=[1]),
})
assert struct == expected_struct
scalar_ctx = Context(predicted_struct=Scalar.from_ast(ast))
with pytest.raises(UnexpectedExpression) as e:
visit_filter(ast, scalar_ctx)
assert str(e.value) == (
'conflict on the line 1\n'
'got: AST node jinja2.nodes.Filter of structure [[<unknown>]]\n'
'expected structure: <scalar>')
def test_string_filters():
for filter in ('striptags', 'capitalize', 'title', 'upper', 'urlize'):
template = '{{ x|' + filter + ' }}'
ast = parse(template).find(nodes.Filter)
ctx = Context(return_struct_cls=Scalar,
predicted_struct=Scalar.from_ast(ast))
rtype, struct = visit_filter(ast, ctx)
expected_rtype = String(label='x', linenos=[1])
expected_struct = Dictionary({
'x': String(label='x', linenos=[1]),
})
assert rtype == expected_rtype
assert struct == expected_struct
def get_scalar_context(ast):
return Context(return_struct_cls=Scalar,
predicted_struct=Scalar.from_ast(ast))