ambari-metrics-anomaly-detection-service/src/test/scala/org/apache/ambari/metrics/adservice/app/DropwizardAppRuleHelper.scala

/**
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
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  * See the License for the specific language governing permissions and
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package org.apache.ambari.metrics.adservice.app

import org.junit.runner.Description

import io.dropwizard.Configuration
import io.dropwizard.testing.ConfigOverride
import io.dropwizard.testing.junit.DropwizardAppRule

import scala.collection.mutable

object DropwizardAppRuleHelper {

  def withAppRunning[C <: Configuration](serviceClass: Class[_ <: io.dropwizard.Application[C]],
                                         configPath: String, configOverrides: ConfigOverride*)
                                        (fn: (DropwizardAppRule[C]) => Unit) {
    val overrides = new mutable.ListBuffer[ConfigOverride]
    configOverrides.foreach { o => overrides += o }
    val rule = new DropwizardAppRule(serviceClass, configPath, overrides.toList: _*)
    rule.apply(() => fn(rule), Description.EMPTY).evaluate()
  }

}