LookupStub.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.maven.api.plugin.testing.stubs;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.services.LookupException;
/**
* A stub implementation of {@link Lookup} for testing purposes.
* Provides a simple service lookup mechanism for tests.
*
* @since 4.0.0
*/
public class LookupStub implements Lookup {
public static final Lookup EMPTY = new LookupStub();
/**
* For sub-class constructors.
*/
protected LookupStub() {}
@Override
public <T> T lookup(Class<T> type) {
throw new LookupException("This is only a stub.");
}
@Override
public <T> T lookup(Class<T> type, String string) {
throw new LookupException("This is only a stub.");
}
@Override
public <T> Optional<T> lookupOptional(Class<T> type) {
return Optional.empty();
}
@Override
public <T> Optional<T> lookupOptional(Class<T> type, String string) {
return Optional.empty();
}
@Override
public <T> List<T> lookupList(Class<T> type) {
return List.of();
}
@Override
public <T> Map<String, T> lookupMap(Class<T> type) {
return Map.of();
}
}