Fix button event entity creation in Bang & Olufsen

[mj23000]

Proposed change

Currently some of the created Event entities do not have a physical button to trigger that event. I've gone through the compatible devices and this PR should make the integration accurate.

Improve testing by comparing the entity IDs of the expected entities and the created instead of just the number of IDs. Additionally use a helper function to reduce duplicate code.

Will leave stale Event entities for Beosound A9 and Beosound A5 devices. These entities could never be triggered as the devices lack the physical buttons. Not sure if this is considered a breaking change.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Update documentation with button restrictions in Bang & Olufsen home-assistant.io#42147
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• I understand the code I am submitting and can explain how it works.
• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
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• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

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[abmantis]

LGTM overall, just some small suggestions

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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[Copilot]

Pull request overview

This PR fixes button event entity creation in the Bang & Olufsen integration to only create entities for physical buttons that actually exist on each device model. Previously, some devices were creating event entities for non-existent buttons (e.g., Beosound Premiere created a Bluetooth button entity despite lacking the physical button). The PR also improves test quality by comparing actual entity IDs instead of just counting them, and introduces reusable helper functions to reduce code duplication.

Key Changes

• Updated get_device_buttons() to filter buttons based on device model capabilities (A5/A9 lack microphone, A9/Premiere lack Bluetooth)
• Refactored tests to use exact entity ID comparison with pytest_unordered instead of count-based assertions
• Added test coverage for Beosound A5 device

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
homeassistant/components/bang_olufsen/util.py	Refactored button filtering logic to handle multiple models without microphone/Bluetooth buttons
tests/components/bang_olufsen/util.py	Added device-specific helper functions and made _get_button_entity_ids private
tests/components/bang_olufsen/test_event.py	Extracted common test logic into _check_button_event_creation helper and added A5 test case
tests/components/bang_olufsen/test_websocket.py	Updated assertions to compare exact entity IDs using pytest_unordered
tests/components/bang_olufsen/const.py	Added Beosound A5 test constants
tests/components/bang_olufsen/conftest.py	Added Beosound A5 config entry fixture
tests/components/bang_olufsen/snapshots/*.ambr	Updated snapshots to reflect corrected entity lists and device name changes