Allow following of 302 redirects in generic camera (home-assistant#154308)

Author: davet2001

homeassistant/components/generic/config_flow.py

@@ -191,7 +191,9 @@ async def async_test_still(
     try:
         async_client = get_async_client(hass, verify_ssl=verify_ssl)
         async with asyncio.timeout(GET_IMAGE_TIMEOUT):
-            response = await async_client.get(url, auth=auth, timeout=GET_IMAGE_TIMEOUT)
+            response = await async_client.get(
+                url, auth=auth, timeout=GET_IMAGE_TIMEOUT, follow_redirects=True
+            )
             response.raise_for_status()
             image = response.content
     except (

tests/components/generic/test_config_flow.py

@@ -505,6 +505,31 @@ async def test_form_image_http_exceptions(
     assert result2["errors"] == expected_message
 
 
+@respx.mock
+async def test_form_image_http_302(
+    hass: HomeAssistant,
+    user_flow: ConfigFlowResult,
+    mock_create_stream: _patch[MagicMock],
+    fakeimgbytes_png: bytes,
+) -> None:
+    """Test we handle image http 302 (temporary redirect)."""
+    respx.get("http://127.0.0.1/testurl/1").side_effect = [
+        httpx.Response(
+            status_code=302, headers={"Location": "http://127.0.0.1/testurl2/1"}
+        )
+    ]
+    respx.get("http://127.0.0.1/testurl2/1", name="fake_img2").respond(
+        stream=fakeimgbytes_png
+    )
+    result2 = await hass.config_entries.flow.async_configure(
+        user_flow["flow_id"],
+        TESTDATA,
+    )
+
+    assert result2["type"] is FlowResultType.FORM
+    assert result2["step_id"] == "user_confirm"
+
+
 @respx.mock
 async def test_form_stream_invalidimage(
     hass: HomeAssistant,