<configuration>

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>[%d{yyyy-MM-dd'T'HH:mm:ss.SSS, GMT} %-5level %logger{36} (%thread\)] %msg%n</pattern>
    </encoder>
  </appender>

  <root level="debug">
    <appender-ref ref="STDOUT" />
  </root>
</configuration>

<configuration>

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>[%d{yyyy-MM-dd'T'HH:mm:ss.SSS, GMT} %-5level %logger{36} (%thread\)] %msg%n</pattern>
    </encoder>
  </appender>

  <root level="warn">
    <appender-ref ref="STDOUT" />
  </root>
</configuration>

Set log level for tests to "warn"
Set log level for tests to "warn"