tweak

script/analyze_component_buses.py

@@ -78,6 +78,7 @@ ISOLATED_COMPONENTS = {
     "matrix_keypad": "Needs isolation due to keypad",
     "mcp4725": "no YAML config to specify i2c bus id",
     "mcp47a1": "no YAML config to specify i2c bus id",
+    "modbus_controller": "Defines multiple modbus buses for testing client/server functionality - conflicts with package modbus bus",
     "packages": "cannot merge packages",
 }
 
@@ -342,7 +343,8 @@ def analyze_all_components(
             non_groupable.add(component_name)
 
         # Check if component is a base bus component
-        # These are platform implementations and must be tested separately
+        # These ARE the bus platform implementations and define buses directly for testing
+        # They cannot be grouped with components that use bus packages (causes ID conflicts)
         if component_name in BASE_BUS_COMPONENTS:
             non_groupable.add(component_name)
 

script/test_build_components.py

@@ -27,6 +27,7 @@ sys.path.insert(0, str(Path(__file__).parent.parent))
 
 # pylint: disable=wrong-import-position
 from script.analyze_component_buses import (
+    BASE_BUS_COMPONENTS,
     ISOLATED_COMPONENTS,
     NO_BUSES_SIGNATURE,
     analyze_all_components,
@@ -369,6 +370,15 @@ def run_grouped_component_tests(
         if component not in all_tests:
             continue
 
+        # Skip components that must be tested in isolation
+        # These are shown separately and should not be in non_groupable_reasons
+        if component in ISOLATED_COMPONENTS:
+            continue
+
+        # Skip base bus components (these test the bus platforms themselves)
+        if component in BASE_BUS_COMPONENTS:
+            continue
+
         # Skip components that use local file references or direct bus configs
         if component in non_groupable:
             # Track the reason (using pre-calculated results to avoid expensive re-analysis)
@@ -391,13 +401,6 @@ def run_grouped_component_tests(
                     )
             continue
 
-        # Skip components that must be tested in isolation
-        if component in ISOLATED_COMPONENTS:
-            non_groupable_reasons[component] = (
-                f"Known build issue: {ISOLATED_COMPONENTS[component]}"
-            )
-            continue
-
         for platform, buses in platforms.items():
             # Skip if platform doesn't match filter
             if platform_filter and not platform.startswith(platform_filter):
@@ -428,6 +431,15 @@ def run_grouped_component_tests(
             reason = ISOLATED_COMPONENTS[comp]
             print(f"  - {comp}: {reason}")
 
+    # Show base bus components (test the bus platform implementations)
+    base_bus_in_tests = [c for c in BASE_BUS_COMPONENTS if c in all_tests]
+    if base_bus_in_tests:
+        print(
+            f"\n○ {len(base_bus_in_tests)} base bus platform components (tested individually):"
+        )
+        for comp in sorted(base_bus_in_tests):
+            print(f"  - {comp}")
+
     # Show excluded components with detailed reasons
     if non_groupable_reasons:
         excluded_in_tests = [c for c in non_groupable_reasons if c in all_tests]

tests/components/gcja5/common.yaml

@@ -1,5 +1,6 @@
 sensor:
   - platform: gcja5
+    uart_id: uart_bus
     pm_1_0:
       name: "Particulate Matter <1.0µm Concentration"
     pm_2_5: