Liquid A/B Test

random-number-test.liquid

{% assign randomNumber = "now" | date: "%N" | modulo: 100 %}

{% if randomNumber > 50 %}
  {% render 'snippet-B' %}

  <script>
    window.dataLayer = window.dataLayer || [];
    window.dataLayer.push({
      'event': 'ABTest',
      'variant': 'B'
    });
  </script>
{% else %}
  {% render 'snippet-A' %}

  <script>
    window.dataLayer = window.dataLayer || [];
    window.dataLayer.push({
      'event': 'ABTest',
      'variant': 'A'
    });
  </script>
{% endif %}