Added commented failing tests for Literals with special characters

Author: timohl

tests/test_pytypes.cpp

@@ -1168,4 +1168,11 @@ TEST_SUBMODULE(pytypes, m) {
     m.def("check_type_is", [](const py::object &x) -> py::typing::TypeIs<RealNumber> {
         return py::isinstance<RealNumber>(x);
     });
+    // Literal with `@`, `%`, `{`, and `}`
+    // m.def("identity_literal_x", [](const py::typing::Literal<"\"x\""> &x) { return x; });
+    // m.def("identity_literal_at", [](const py::typing::Literal<"\"@\""> &x) { return x; });
+    // m.def("identity_literal_percent", [](const py::typing::Literal<"\"%\""> &x) { return x; });
+    // m.def("identity_literal_curly_open", [](const py::typing::Literal<"\"{\""> &x) { return x;
+    // }); m.def("identity_literal_curly_close", [](const py::typing::Literal<"\"}\""> &x) { return
+    // x; });
 }

tests/test_pytypes.py

@@ -1281,3 +1281,29 @@ def test_arg_return_type_hints(doc):
     )
     # TypeIs<T>
     assert doc(m.check_type_is) == "check_type_is(arg0: object) -> TypeIs[float]"
+    # Literal without special characters
+    # assert (
+    # doc(m.identity_literal_x)
+    # == 'identity_literal_x(arg0: Literal["x"]) -> Literal["x"]'
+    # )
+    # The Following tests fail with `ImportError: Internal error while parsing type signature (2)`
+    # Literal with @
+    # assert (
+    # doc(m.identity_literal_at)
+    # == 'identity_literal_at(arg0: Literal["@"]) -> Literal["@"]'
+    # )
+    # Literal with %
+    # assert (
+    # doc(m.identity_literal_percent)
+    # == 'identity_literal_percent(arg0: Literal["%"]) -> Literal["%"]'
+    # )
+    # Literal with {
+    # assert (
+    # doc(m.identity_literal_curly_open)
+    # == 'identity_literal_curly_open(arg0: Literal["{"]) -> Literal["{"]'
+    # )
+    # Literal with }
+    # assert (
+    # doc(m.identity_literal_curly_close)
+    # == 'identity_literal_curly_close(arg0: Literal["}"]) -> Literal["}"]'
+    # )