/*
 * Copyright 2015-present Facebook, 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 com.facebook.buck.model;

import static org.junit.Assert.assertEquals;

import com.google.common.base.Function;
import org.junit.Test;

@SuppressWarnings("PMD.PrematureDeclaration")
public class EitherTest {
  @Test
  public void shouldCorrectlyTransformLeft() {
    BuildTarget expected = BuildTargetFactory.newInstance("//:cake");
    Either<String, Object> either = Either.ofLeft(expected.toString());

    Function<String, BuildTarget> workingTransformer = BuildTargetFactory::newInstance;
    Function<Object, BuildTarget> failingTransformer =
        input -> {
          throw new RuntimeException("Did not expect to be called");
        };

    BuildTarget actual = either.transform(workingTransformer, failingTransformer);

    assertEquals(expected, actual);
  }

  @Test
  public void shouldCorrectlyTransformRight() {
    BuildTarget expected = BuildTargetFactory.newInstance("//:cake");
    Either<Object, String> either = Either.ofRight(expected.toString());

    Function<String, BuildTarget> workingTransformer = BuildTargetFactory::newInstance;
    Function<Object, BuildTarget> failingTransformer =
        input -> {
          throw new RuntimeException("Did not expect to be called");
        };

    BuildTarget actual = either.transform(failingTransformer, workingTransformer);

    assertEquals(expected, actual);
  }
}