Deprecate URL.is_ssl (#1128)

Author: lovelydinosaur

httpx/_models.py

@@ -140,6 +140,8 @@ def raw(self) -> typing.Tuple[bytes, bytes, typing.Optional[int], bytes]:
 
     @property
     def is_ssl(self) -> bool:
+        message = 'URL.is_ssl() is pending deprecation. Use url.scheme == "https"'
+        warnings.warn(message, DeprecationWarning)
         return self.scheme == "https"
 
     @property

tests/client/test_client.py

@@ -178,7 +178,8 @@ def test_merge_absolute_url():
     client = httpx.Client(base_url="https://www.example.com/")
     request = client.build_request("GET", "http://www.example.com/")
     assert request.url == httpx.URL("http://www.example.com/")
-    assert not request.url.is_ssl
+    with pytest.warns(DeprecationWarning):
+        assert not request.url.is_ssl
 
 
 def test_merge_relative_url():