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/*
 * Copyright 2001-2013 Artima, Inc.
 *
 * Licensed 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.scalatest

import org.scalactic.source

/**
 * Trait providing an apply method to which status updates about a running suite of tests can be reported.
 * 
 * 
 * An Notifier is essentially
 * used to wrap a Reporter and provide easy ways to send status updates
 * to that Reporter via an NoteProvided event.
 * Notifier contains an apply method that takes a string and
 * an optional payload object of type Any.
 * The Notifier will forward the passed alert message string to the
 * Reporter as the message parameter, and the optional
 * payload object as the payload parameter, of an NoteProvided event.
 * 
 *
 * 
 * For insight into the differences between Notifier, Alerter, and Informer, see the
 * main documentation for trait Notifying.
 * 
 */
trait Notifier {

  /**
   * Send a status update via an NoteProvided event to the reporter.
   */
  def apply(message: String, payload: Option[Any] = None)(implicit pos: source.Position): Unit
}