chore: import upstream snapshot with attribution

test/utils/test_http_client.py

@@ -0,0 +1,57 @@
+# SPDX-FileCopyrightText: 2022-present deepset GmbH <info@deepset.ai>
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import httpx
+import pytest
+
+from haystack.utils.http_client import init_http_client
+
+
+def test_init_http_client():
+    # test without any params
+    http_client = init_http_client()
+    assert http_client is None
+
+    # test client is initialized with http_client_kwargs
+    client_kwargs = {"base_url": "https://example.com"}
+    http_client = init_http_client(http_client_kwargs=client_kwargs)
+    assert http_client is not None
+    assert isinstance(http_client, httpx.Client)
+    assert http_client.base_url == "https://example.com"
+
+
+def test_init_http_client_async():
+    # test without any params
+    http_async_client = init_http_client(async_client=True)
+    assert http_async_client is None
+
+    # test async client is initialized with http_client_kwargs
+    http_async_client = init_http_client(http_client_kwargs={"base_url": "https://example.com"}, async_client=True)
+    assert http_async_client is not None
+    assert isinstance(http_async_client, httpx.AsyncClient)
+    assert http_async_client.base_url == "https://example.com"
+
+
+def test_http_client_kwargs_type_validation():
+    # test http_client_kwargs is not a dictionary
+    with pytest.raises(TypeError, match="The parameter 'http_client_kwargs' must be a dictionary."):
+        init_http_client(http_client_kwargs="invalid")  # type: ignore[call-overload]
+
+
+def test_http_client_kwargs_with_invalid_params():
+    # test http_client_kwargs with invalid keys
+    with pytest.raises(TypeError, match="unexpected keyword argument"):
+        init_http_client(http_client_kwargs={"invalid_key": "invalid"})
+
+
+def test_init_http_client_with_dict_limits():
+    """Test that dict limits are converted to httpx.Limits objects without AttributeError."""
+    http_client_kwargs = {"limits": {"max_connections": 100, "max_keepalive_connections": 20}}
+
+    # This should not raise AttributeError: 'dict' object has no attribute 'max_connections'
+    client = init_http_client(http_client_kwargs=http_client_kwargs, async_client=False)
+    assert client is not None
+    assert isinstance(client, httpx.Client)
+
+    client.close()