Fix flakey tests (#8914)

tests/dashboard/test_web_server.py

@@ -53,6 +53,8 @@ async def dashboard() -> DashboardTestHelper:
     assert DASHBOARD.settings.on_ha_addon is True
     assert DASHBOARD.settings.using_auth is False
     task = asyncio.create_task(DASHBOARD.async_run())
+    # Wait for initial device loading to complete
+    await DASHBOARD.entries.async_request_update_entries()
     client = AsyncHTTPClient()
     io_loop = IOLoop(make_current=False)
     yield DashboardTestHelper(io_loop, client, port)

tests/integration/conftest.py

@@ -5,6 +5,7 @@ from __future__ import annotations
 import asyncio
 from collections.abc import AsyncGenerator, Generator
 from contextlib import AbstractAsyncContextManager, asynccontextmanager
+import logging
 from pathlib import Path
 import platform
 import signal
@@ -40,6 +41,29 @@ from .types import (
 )
 
 
+@pytest.fixture(scope="module", autouse=True)
+def enable_aioesphomeapi_debug_logging():
+    """Enable debug logging for aioesphomeapi to help diagnose connection issues."""
+    # Get the aioesphomeapi logger
+    logger = logging.getLogger("aioesphomeapi")
+    # Save the original level
+    original_level = logger.level
+    # Set to DEBUG level
+    logger.setLevel(logging.DEBUG)
+    # Also ensure we have a handler that outputs to console
+    if not logger.handlers:
+        handler = logging.StreamHandler()
+        handler.setLevel(logging.DEBUG)
+        formatter = logging.Formatter(
+            "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+        )
+        handler.setFormatter(formatter)
+        logger.addHandler(handler)
+    yield
+    # Restore original level
+    logger.setLevel(original_level)
+
+
 @pytest.fixture
 def integration_test_dir() -> Generator[Path]:
     """Create a temporary directory for integration tests."""

tests/integration/const.py

@@ -2,7 +2,7 @@
 
 # Network constants
 DEFAULT_API_PORT = 6053
-LOCALHOST = "localhost"
+LOCALHOST = "127.0.0.1"
 
 # Timeout constants
 API_CONNECTION_TIMEOUT = 30.0  # seconds