Add tests for browse media image proxy (#43076)

* add tests for browse media image proxy

* Update test_init.py

* Update __init__.py

* Update __init__.py

* Update __init__.py

* Update __init__.py

homeassistant/components/media_player/__init__.py

@@ -7,7 +7,7 @@ import functools as ft
 import hashlib
 import logging
 import secrets
-from typing import List, Optional
+from typing import List, Optional, Tuple
 from urllib.parse import urlparse
 
 from aiohttp import web
@@ -434,8 +434,11 @@ class MediaPlayerEntity(Entity):
         return await self._async_fetch_image_from_cache(url)
 
     async def async_get_browse_image(
-        self, media_content_type, media_content_id, media_image_id=None
+        self,
-    ):
+        media_content_type: str,
+        media_content_id: str,
+        media_image_id: Optional[str] = None,
+    ) -> Tuple[Optional[str], Optional[str]]:
         """
         Optionally fetch internally accessible image for media browser.
 
@@ -906,8 +909,11 @@ class MediaPlayerEntity(Entity):
         return content, content_type
 
     def get_browse_image_url(
-        self, media_content_type, media_content_id, media_image_id=None
+        self,
-    ):
+        media_content_type: str,
+        media_content_id: str,
+        media_image_id: Optional[str] = None,
+    ) -> str:
         """Generate an url for a media browser image."""
         url_path = (
             f"/api/media_player_proxy/{self.entity_id}/browse_media"

tests/components/media_player/test_init.py

@@ -92,6 +92,33 @@ async def test_get_image_http_remote(hass, aiohttp_client):
         assert content == b"image"
 
 
+async def test_get_async_get_browse_image(hass, aiohttp_client, hass_ws_client):
+    """Test get browse image."""
+    await async_setup_component(
+        hass, "media_player", {"media_player": {"platform": "demo"}}
+    )
+    await hass.async_block_till_done()
+
+    entity_comp = hass.data.get("entity_components", {}).get("media_player")
+    assert entity_comp
+
+    player = entity_comp.get_entity("media_player.bedroom")
+    assert player
+
+    client = await aiohttp_client(hass.http.app)
+
+    with patch(
+        "homeassistant.components.media_player.MediaPlayerEntity."
+        "async_get_browse_image",
+        return_value=(b"image", "image/jpeg"),
+    ):
+        url = player.get_browse_image_url("album", "abcd")
+        resp = await client.get(url)
+        content = await resp.read()
+
+    assert content == b"image"
+
+
 def test_deprecated_base_class(caplog):
     """Test deprecated base class."""