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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.fixture

import org.scalatest._

/**
 * Trait that when mixed into a fixture.Suite passes the
 * TestData passed to withFixture as a fixture into each test.
 *
 * 
 * For example, here's how you could access the test's name in each test using TestDataFixture:
 * 
 *
 *  * package org.scalatest.examples.fixture.testdatafixture
 *
 * import org.scalatest._
 *
 * class ExampleSpec extends fixture.FlatSpec with fixture.TestDataFixture {
 *
 *   "Accessing the test data" should "be easy!" in { td =>
 *     assert(td.name == "Accessing the test data should be easy!")
 *   }
 *
 *   it should "be fun!" in { td =>
 *     assert(td.name == "Accessing the test data should be fun!")
 *   }
 * }
 * 
 *
 * @author Bill Venners
 */
trait TestDataFixture { this: fixture.Suite =>

  /**
   * The type of the fixture, which is TestData.
   */
  type FixtureParam = TestData

  /**
   * Invoke the test function, passing to the the test function 
   * the TestData for the test.
   *
   * 
   * To enable stacking of traits that define withFixture(NoArgTest), this method does not
   * invoke the test function directly. Instead, it delegates responsibility for invoking the test function
   * to withFixture(NoArgTest).
   * 
   *
   * @param test the OneArgTest to invoke, passing in the
   *   TestData fixture
   * @return an Outcome instance
   */
  def withFixture(test: OneArgTest): Outcome = {
    withFixture(test.toNoArgTest(test))
  }
}