add some tests

tests/test_intopyobject.rs

@@ -0,0 +1,168 @@
+#![cfg(feature = "macros")]
+
+use pyo3::types::{PyDict, PyString};
+use pyo3::{prelude::*, IntoPyObject};
+
+#[macro_use]
+#[path = "../src/tests/common.rs"]
+mod common;
+
+#[derive(Debug, IntoPyObject)]
+pub struct A<'py> {
+    s: String,
+    t: Bound<'py, PyString>,
+    p: Bound<'py, PyAny>,
+}
+
+#[test]
+fn test_named_fields_struct() {
+    Python::with_gil(|py| {
+        let a = A {
+            s: "Hello".into(),
+            t: PyString::new(py, "World"),
+            p: 42i32.into_pyobject(py).unwrap().into_any(),
+        };
+        let pya = a.into_pyobject(py).unwrap();
+        assert_eq!(
+            pya.get_item("s")
+                .unwrap()
+                .unwrap()
+                .downcast::<PyString>()
+                .unwrap(),
+            "Hello"
+        );
+        assert_eq!(
+            pya.get_item("t")
+                .unwrap()
+                .unwrap()
+                .downcast::<PyString>()
+                .unwrap(),
+            "World"
+        );
+        assert_eq!(
+            pya.get_item("p")
+                .unwrap()
+                .unwrap()
+                .extract::<i32>()
+                .unwrap(),
+            42
+        );
+    });
+}
+
+#[derive(Debug, IntoPyObject)]
+#[pyo3(transparent)]
+pub struct B<'a> {
+    test: &'a str,
+}
+
+#[test]
+fn test_transparent_named_field_struct() {
+    Python::with_gil(|py| {
+        let pyb = B { test: "test" }.into_pyobject(py).unwrap();
+        let b = pyb.extract::<String>().unwrap();
+        assert_eq!(b, "test");
+    });
+}
+
+#[derive(Debug, IntoPyObject)]
+#[pyo3(transparent)]
+pub struct D<T> {
+    test: T,
+}
+
+#[test]
+fn test_generic_transparent_named_field_struct() {
+    Python::with_gil(|py| {
+        let pyd = D {
+            test: String::from("test"),
+        }
+        .into_pyobject(py)
+        .unwrap();
+        let d = pyd.extract::<String>().unwrap();
+        assert_eq!(d, "test");
+
+        let pyd = D { test: 1usize }.into_pyobject(py).unwrap();
+        let d = pyd.extract::<usize>().unwrap();
+        assert_eq!(d, 1);
+    });
+}
+
+#[derive(Debug, IntoPyObject)]
+pub struct Tuple(String, usize);
+
+#[test]
+fn test_tuple_struct() {
+    Python::with_gil(|py| {
+        let tup = Tuple(String::from("test"), 1).into_pyobject(py).unwrap();
+        assert!(tup.extract::<(usize, String)>().is_err());
+        let tup = tup.extract::<(String, usize)>().unwrap();
+        assert_eq!(tup.0, "test");
+        assert_eq!(tup.1, 1);
+    });
+}
+
+#[derive(Debug, IntoPyObject)]
+pub struct TransparentTuple(String);
+
+#[test]
+fn test_transparent_tuple_struct() {
+    Python::with_gil(|py| {
+        let tup = TransparentTuple(String::from("test"))
+            .into_pyobject(py)
+            .unwrap();
+        assert!(tup.extract::<(String,)>().is_err());
+        let tup = tup.extract::<String>().unwrap();
+        assert_eq!(tup, "test");
+    });
+}
+
+#[derive(Debug, IntoPyObject)]
+pub enum Foo<'py> {
+    TupleVar(usize, String),
+    StructVar {
+        test: Bound<'py, PyString>,
+    },
+    #[pyo3(transparent)]
+    TransparentTuple(usize),
+    #[pyo3(transparent)]
+    TransparentStructVar {
+        a: Option<String>,
+    },
+}
+
+#[test]
+fn test_enum() {
+    Python::with_gil(|py| {
+        let foo = Foo::TupleVar(1, "test".into()).into_pyobject(py).unwrap();
+        assert_eq!(
+            foo.extract::<(usize, String)>().unwrap(),
+            (1, String::from("test"))
+        );
+
+        let foo = Foo::StructVar {
+            test: PyString::new(py, "test"),
+        }
+        .into_pyobject(py)
+        .unwrap()
+        .downcast_into::<PyDict>()
+        .unwrap();
+
+        assert_eq!(
+            foo.get_item("test")
+                .unwrap()
+                .unwrap()
+                .downcast_into::<PyString>()
+                .unwrap(),
+            "test"
+        );
+
+        let foo = Foo::TransparentTuple(1).into_pyobject(py).unwrap();
+        assert_eq!(foo.extract::<usize>().unwrap(), 1);
+
+        let foo = Foo::TransparentStructVar { a: None }
+            .into_pyobject(py)
+            .unwrap();
+        assert!(foo.is_none());
+    });
+}