Added tests for sequence caster for noconvert mode

Author: timohl

tests/test_stl.cpp

@@ -651,6 +651,10 @@ TEST_SUBMODULE(stl, m) {
     m.def("roundtrip_std_vector_int", [](const std::vector<int> &v) { return v; });
     m.def("roundtrip_std_map_str_int", [](const std::map<std::string, int> &m) { return m; });
     m.def("roundtrip_std_set_int", [](const std::set<int> &s) { return s; });
+    m.def(
+        "roundtrip_std_vector_int_noconvert",
+        [](const std::vector<int> &v) { return v; },
+        py::arg("v").noconvert());
     m.def(
         "roundtrip_std_map_str_int_noconvert",
         [](const std::map<std::string, int> &m) { return m; },

tests/test_stl.py

@@ -597,6 +597,7 @@ def __getitem__(self, index):
     class FormalSequenceLike(BareSequenceLike, Sequence):
         pass
 
+    # convert mode
     assert (
         doc(m.roundtrip_std_vector_int)
         == "roundtrip_std_vector_int(arg0: collections.abc.Sequence[typing.SupportsInt]) -> list[int]"
@@ -608,6 +609,22 @@ class FormalSequenceLike(BareSequenceLike, Sequence):
     assert m.roundtrip_std_vector_int([]) == []
     assert m.roundtrip_std_vector_int(()) == []
     assert m.roundtrip_std_vector_int(BareSequenceLike()) == []
+    # noconvert mode
+    assert (
+        doc(m.roundtrip_std_vector_int_noconvert)
+        == "roundtrip_std_vector_int_noconvert(v: list[int]) -> list[int]"
+    )
+    assert m.roundtrip_std_vector_int_noconvert([1, 2, 3]) == [1, 2, 3]
+    assert m.roundtrip_std_vector_int_noconvert((1, 2, 3)) == [1, 2, 3]
+    assert m.roundtrip_std_vector_int_noconvert(FormalSequenceLike(1, 2, 3)) == [
+        1,
+        2,
+        3,
+    ]
+    assert m.roundtrip_std_vector_int_noconvert(BareSequenceLike(1, 2, 3)) == [1, 2, 3]
+    assert m.roundtrip_std_vector_int_noconvert([]) == []
+    assert m.roundtrip_std_vector_int_noconvert(()) == []
+    assert m.roundtrip_std_vector_int_noconvert(BareSequenceLike()) == []
 
 
 def test_mapping_caster_protocol(doc):