/*
* Copyright 2014-2017 the original author or 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 org.springframework.data.util;
import static org.assertj.core.api.Assertions.*;
import lombok.Value;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.ReflectionUtils;
/**
* Unit tests for {@link AnnotationDetectionFieldCallback}.
*
* @author Oliver Gierke
*/
public class AnnotationDetectionFieldCallbackUnitTests {
@Test(expected = IllegalArgumentException.class) // DATACMNS-616
public void rejectsNullAnnotationType() {
new AnnotationDetectionFieldCallback(null);
}
@Test // DATACMNS-616
public void looksUpValueFromPrivateField() {
AnnotationDetectionFieldCallback callback = new AnnotationDetectionFieldCallback(Autowired.class);
ReflectionUtils.doWithFields(Sample.class, callback);
assertThat(callback.getType()).hasValue(String.class);
assertThat(callback.getValue(new Sample("foo"))).hasValue("foo");
}
@Test // DATACMNS-616
public void returnsNullForObjectNotContainingAFieldWithTheConfiguredAnnotation() {
AnnotationDetectionFieldCallback callback = new AnnotationDetectionFieldCallback(Autowired.class);
ReflectionUtils.doWithFields(Empty.class, callback);
assertThat(callback.getType()).isNotPresent();
assertThat(callback.getValue(new Empty())).isNotPresent();
}
@Value
static class Sample {
@Autowired String value;
}
static class Empty {}
}