org.scalatest.matchers.AMatcher.scala Maven / Gradle / Ivy

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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.matchers

import org.scalatest._

trait AMatcher[-T] extends Function1[T, MatchResult] { 
  val nounName: String
  def apply(left: T): MatchResult
}

object AMatcher {
  
  def apply[T](name: String)(fun: T => Boolean) = 
    new AMatcher[T] {
      val nounName = name
      def apply(left: T): MatchResult = 
        MatchResult(
          fun(left), 
          FailureMessages("wasNotA", left, UnquotedString(nounName)), 
          FailureMessages("wasA", left, UnquotedString(nounName))
        )
    }
  
}