protocol_handlers-member-manual.tentative.html

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  <link rel="manifest" href="resources/protocol_handlers-member.webmanifest" />
  <title>Protocol Handling Web Platform Test</title>
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  <h1>Protocol Handling Web Platform Test</h1>
  <p>This test validates that an install application can register URL protocol
     handlers via a property in the web app manifest. The app should open
     directly when the 'web+testing' custom-scheme URL is visited.
  </p>
  <h2>Manual Test Steps:</h2>
  <p>
    <ol>
      <li>Install this app.</li>
      <li>Launch 'web+testing://test-url/'. Instructions will vary by OS.
        <ul>
          <li>On Windows - open a command prompt, and run "start web+testing://test-url/".</li>
          <li>On MacOS - open a terminal, and "open web+testing://test-url/".</li>
          <li>On Linux - open a terminal, and "xgd-open web+testing://test-url/".</li>
        </ul>
      </li>
      <li>If your browser prompts you, allow the app to open.</li>
      <li>The app window that opens should indicate success of this test.</li>
    </ol>
  </p>
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chromium/third_party/blink/web_tests/external/wpt/appmanifest/protocol_handlers-member/protocol_handlers-member-manual.tentative.html