def test_multiple_imported_names_in_one_statement_generates_multiple_assignments(self):
_assert_transform(
nodes.import_from(["."], [
nodes.import_alias("x", None),
nodes.import_alias("y", None),
]),
cc.statements([
cc.assign(cc.ref("x"), cc.attr(cc.module_ref(["."]), "x")),
cc.assign(cc.ref("y"), cc.attr(cc.module_ref(["."]), "y")),
]),
)
def test_import_of_module_in_package_assigns_values_for_both_package_and_module(self):
_assert_transform(
nodes.import_([
nodes.import_alias("os.path", None),
]),
cc.statements([
cc.assign(cc.ref("os"), cc.module_ref(["os"])),
cc.assign(cc.attr(cc.ref("os"), "path"), cc.module_ref(["os", "path"])),
])
)
def test_transform_attribute_access():
_assert_transform(
cc.attr(cc.ref("x"), "y"),
js.call(js.ref("$nope.builtins.getattr"), [js.ref("x"), js.string("y")])
)
def test_transform_assignment_to_attribute_sets_property_directly():
_assert_transform(
cc.assign(cc.attr(cc.ref("x"), "y"), cc.ref("z")),
js.expression_statement(js.assign(js.property_access(js.ref("x"), "y"), js.ref("z"))),
)
def test_import_from_assigns_value_to_asname_if_asname_is_set(self):
_assert_transform(
nodes.import_from(["os", "path"], [nodes.import_alias("join", "j")]),
cc.assign(cc.ref("j"), cc.attr(cc.module_ref(["os", "path"]), "join")),
)
def test_transform_getitem(self):
_assert_transform(
nodes.subscript(nodes.ref("x"), nodes.ref("y")),
cc.call(cc.attr(cc.ref("x"), "__getitem__"), [cc.ref("y")])
)
def test_transform_unary_operation_is_converted_to_call_on_class(self):
_assert_transform(
nodes.neg(nodes.ref("x")),
cc.call(cc.attr(cc.ref("x"), "__neg__"), [])
)
def test_transform_binary_operation_is_converted_to_call_on_class(self):
_assert_transform(
nodes.add(nodes.ref("x"), nodes.ref("y")),
cc.call(cc.attr(cc.ref("x"), "__add__"), [cc.ref("y")])
)
def test_import_from_uses_two_dots_to_indicate_import_from_parent_package(self):
_assert_transform(
nodes.import_from([".."], [nodes.import_alias("x", None)]),
cc.assign(cc.ref("x"), cc.attr(cc.module_ref([".."]), "x")),
)