fix

tests/test_content.py

@@ -1,3 +1,4 @@
+import enum
 import io
 import typing
 
@@ -182,7 +183,14 @@ async def test_json_content():
 
 @pytest.mark.anyio
 async def test_urlencoded_content():
-    request = httpx.Request(method, url, data={"Hello": "world!"})
+    class Flag(enum.Enum):
+        flag = "f"
+
+    request = httpx.Request(
+        method,
+        url,
+        data={"Hello": "world!", "foo": Flag.flag, "like": True, "bar": 123},
+    )
     assert isinstance(request.stream, typing.Iterable)
     assert isinstance(request.stream, typing.AsyncIterable)
 
@@ -191,11 +199,11 @@ async def test_urlencoded_content():
 
     assert request.headers == {
         "Host": "www.example.com",
-        "Content-Length": "14",
+        "Content-Length": "38",
         "Content-Type": "application/x-www-form-urlencoded",
     }
-    assert sync_content == b"Hello=world%21"
-    assert async_content == b"Hello=world%21"
+    assert sync_content == b"Hello=world%21&foo=f&like=true&bar=123"
+    assert async_content == b"Hello=world%21&foo=f&like=true&bar=123"
 
 
 @pytest.mark.anyio
@@ -484,3 +492,12 @@ async def hello_world() -> typing.AsyncIterator[bytes]:
 def test_response_invalid_argument():
     with pytest.raises(TypeError):
         httpx.Response(200, content=123)  # type: ignore
+
+    with pytest.raises(TypeError):
+        httpx.Request("GET", "", data={"hello": b""})
+
+    class AnyObject:
+        pass
+
+    with pytest.raises(TypeError):
+        httpx.Request("GET", "", data={"hello": AnyObject()})

tests/test_multipart.py

@@ -213,7 +213,7 @@ def test_multipart_encode(tmp_path: typing.Any) -> None:
 
     url = "https://www.example.com/"
     headers = {"Content-Type": "multipart/form-data; boundary=BOUNDARY"}
-    data = {
+    data: dict[str, typing.Any] = {
         "a": "1",
         "b": b"C",
         "c": ["11", "22", "33"],