Automatically convert Client.cookies and Client.headers on set (#274)

docs/api.md

@@ -27,6 +27,8 @@
 ```
 
 * `def __init__([auth], [headers], [cookies], [verify], [cert], [timeout], [pool_limits], [max_redirects], [app], [dispatch])`
+* `.headers` - **Headers**
+* `.cookies` - **Cookies**
 * `def .get(url, [params], [headers], [cookies], [auth], [stream], [allow_redirects], [verify], [cert], [timeout])`
 * `def .options(url, [params], [headers], [cookies], [auth], [stream], [allow_redirects], [verify], [cert], [timeout])`
 * `def .head(url, [params], [headers], [cookies], [auth], [stream], [allow_redirects], [verify], [cert], [timeout])`

httpx/client.py

@@ -102,13 +102,29 @@ class BaseClient:
             self.base_url = URL(base_url)
 
         self.auth = auth
-        self.headers = Headers(headers)
-        self.cookies = Cookies(cookies)
+        self._headers = Headers(headers)
+        self._cookies = Cookies(cookies)
         self.max_redirects = max_redirects
         self.dispatch = async_dispatch
         self.concurrency_backend = backend
         self.trust_env = True if trust_env is None else trust_env
 
+    @property
+    def headers(self) -> Headers:
+        return self._headers
+
+    @headers.setter
+    def headers(self, headers: HeaderTypes) -> None:
+        self._headers = Headers(headers)
+
+    @property
+    def cookies(self) -> Cookies:
+        return self._cookies
+
+    @cookies.setter
+    def cookies(self, cookies: CookieTypes) -> None:
+        self._cookies = Cookies(cookies)
+
     def check_concurrency_backend(self, backend: ConcurrencyBackend) -> None:
         pass  # pragma: no cover
 

tests/client/test_cookies.py

@@ -78,6 +78,42 @@ def test_set_cookie_with_cookiejar():
     assert response.json() == {"cookies": "example-name=example-value"}
 
 
+def test_setting_client_cookies_to_cookiejar():
+    """
+    Send a request including a cookie, using a `CookieJar` instance.
+    """
+
+    url = "http://example.org/echo_cookies"
+    cookies = CookieJar()
+    cookie = Cookie(
+        version=0,
+        name="example-name",
+        value="example-value",
+        port=None,
+        port_specified=False,
+        domain="",
+        domain_specified=False,
+        domain_initial_dot=False,
+        path="/",
+        path_specified=True,
+        secure=False,
+        expires=None,
+        discard=True,
+        comment=None,
+        comment_url=None,
+        rest={"HttpOnly": None},
+        rfc2109=False,
+    )
+    cookies.set_cookie(cookie)
+
+    with Client(dispatch=MockDispatch()) as client:
+        client.cookies = cookies
+        response = client.get(url)
+
+    assert response.status_code == 200
+    assert response.json() == {"cookies": "example-name=example-value"}
+
+
 def test_set_cookie_with_cookies_model():
     """
     Send a request including a cookie, using a `Cookies` instance.

tests/client/test_properties.py

@@ -0,0 +1,17 @@
+from httpx import Client, Cookies, Headers
+
+
+def test_client_headers():
+    client = Client()
+    client.headers = {"a": "b"}
+    assert isinstance(client.headers, Headers)
+    assert client.headers["A"] == "b"
+
+
+def test_client_cookies():
+    client = Client()
+    client.cookies = {"a": "b"}
+    assert isinstance(client.cookies, Cookies)
+    mycookies = list(client.cookies.jar)
+    assert len(mycookies) == 1
+    assert mycookies[0].name == "a" and mycookies[0].value == "b"