[WIP] ci: add missing tests for actions

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original issue description:

Add missing CI tests for actions:

• actions/check/url-ping/action.yml: use a mock server to simulate each test cases

Original prompt

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This section details on the original issue you should resolve

<issue_title>ci: add missing tests for actions</issue_title>
<issue_description>Add missing CI tests for actions:

• actions/check/url-ping/action.yml: use a mock server to simulate each test cases</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #179

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[neilime]

@copilot missing Test case should added in this file: .github/workflows/__test-action-check-url-ping.yml