/*
 * Copyright (C) 2015 The Dagger Authors.
 *
 * 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 dagger.functional.cycle;

import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import static com.google.common.truth.TruthJUnit.assume;
import static java.util.Arrays.stream;

import com.squareup.javapoet.ClassName;
import dagger.functional.cycle.LongCycle.LongCycleComponent;
import java.lang.reflect.Method;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

@RunWith(JUnit4.class)
public class LongCycleTest {

  /**
   * Tests a cycle long enough that the real factory is created in a separate initialize method from
   * the delegate factory.
   */
  @Test
  public void longCycle() {
    LongCycleComponent longCycleComponent = DaggerLongCycle_LongCycleComponent.create();
    assertThat(longCycleComponent.class1()).isNotNull();
  }

  /**
   * Fails if {@link LongCycleComponent} doesn't have a long enough cycle to make sure the real
   * factory is created in a separate method from the delegate factory.
   */
  @Test
  public void longCycleHasMoreThanOneInitializeMethod() throws Exception {
    assume().that(System.getProperty("dagger.mode")).doesNotContain("FastInit");
    ClassName componentImpl =
        System.getProperty("dagger.mode").contains("ExtendsComponent")
            ? ClassName.get(DaggerLongCycle_LongCycleComponent.class)
            : ClassName.get(DaggerLongCycle_LongCycleComponent.class)
                .nestedClass("LongCycleComponentImpl");
    boolean hasInitialize2 =
        stream(
                DaggerLongCycle_LongCycleComponent.class
                    .getClassLoader()
                    .loadClass(componentImpl.reflectionName())
                    .getDeclaredMethods())
            .map(Method::getName)
            .anyMatch(name -> name.equals("initialize2"));
    assertWithMessage("LongCycleComponent impl has an initialize2 method")
        .that(hasInitialize2)
        .isTrue();
  }
}