Test nb::int_(double). (#793)

* Test `nb::int_(double)`.

This commit adds tests that demonstrate that `nb::int_(x)` does not
create an integer, but instead it creates a float.

* Update golden reference.

tests/test_functions.cpp

@@ -254,6 +254,9 @@ NB_MODULE(test_functions_ext, m) {
     m.def("test_19", [](nb::int_ i) { return i + nb::int_(123); });
     m.def("test_20", [](nb::str s) { return nb::int_(s) + nb::int_(123); });
     m.def("test_21", [](nb::int_ i) { return (int) i; });
+    m.def("test_21_f", [](nb::float_ f) { return nb::int_(f); });
+    m.def("test_21_g", []() { return nb::int_(1.5); });
+    m.def("test_21_h", []() { return nb::int_(1e50); });
 
     // Test capsule wrapper
     m.def("test_22", []() -> void * { return (void*) 1; });

tests/test_functions.py

@@ -280,6 +280,13 @@ def test25_int():
     assert t.test_19(5) == 128
     assert t.test_20("5") == 128
     assert t.test_21(5) == 5
+    assert t.test_21_f(5.1) == int(5.1)
+    assert t.test_21_f(1e50) == int(1e50)
+    assert type(t.test_21_f(0.5)) is int
+    assert t.test_21_g() == int(1.5)
+    assert type(t.test_21_g()) is int
+    assert t.test_21_h() == int(1e50)
+    assert type(t.test_21_h()) is int
     assert t.test_19.__doc__ == "test_19(arg: int, /) -> object"
 
 

tests/test_functions_ext.pyi.ref

@@ -120,6 +120,12 @@ def test_20(arg: str, /) -> object: ...
 
 def test_21(arg: int, /) -> int: ...
 
+def test_21_f(arg: float, /) -> int: ...
+
+def test_21_g() -> int: ...
+
+def test_21_h() -> int: ...
+
 def test_22() -> types.CapsuleType: ...
 
 def test_23() -> types.CapsuleType: ...