runtime/master/src/test/java/org/apache/nemo/runtime/master/scheduler/SchedulingConstraintnRegistryTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.nemo.runtime.master.scheduler;

import org.apache.nemo.common.ir.executionproperty.VertexExecutionProperty;
import org.apache.nemo.common.ir.vertex.executionproperty.ResourceLocalityProperty;
import org.apache.nemo.common.ir.vertex.executionproperty.ResourcePriorityProperty;
import org.apache.nemo.common.ir.vertex.executionproperty.ResourceSlotProperty;
import org.apache.nemo.runtime.master.BlockManagerMaster;
import org.apache.reef.tang.Injector;
import org.apache.reef.tang.Tang;
import org.apache.reef.tang.exceptions.InjectionException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;

/**
 * Tests {@link SchedulingConstraintRegistry}.
 */
@RunWith(PowerMockRunner.class)
@PrepareForTest({BlockManagerMaster.class})
public final class SchedulingConstraintnRegistryTest {
  @Test
  public void testSchedulingConstraintRegistry() throws InjectionException {
    final Injector injector = Tang.Factory.getTang().newInjector();
    injector.bindVolatileInstance(BlockManagerMaster.class, mock(BlockManagerMaster.class));
    final SchedulingConstraintRegistry registry =
      injector.getInstance(SchedulingConstraintRegistry.class);
    assertEquals(FreeSlotSchedulingConstraint.class, getConstraintOf(ResourceSlotProperty.class, registry));
    assertEquals(ContainerTypeAwareSchedulingConstraint.class,
      getConstraintOf(ResourcePriorityProperty.class, registry));
    assertEquals(LocalitySchedulingConstraint.class,
      getConstraintOf(ResourceLocalityProperty.class, registry));
  }

  private static Class<? extends SchedulingConstraint> getConstraintOf(
    final Class<? extends VertexExecutionProperty> property, final SchedulingConstraintRegistry registry) {
    return registry.get(property)
      .orElseThrow(() -> new RuntimeException(String.format(
        "No SchedulingConstraint found for property %s", property)))
      .getClass();
  }
}