/*
* Copyright 2013 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.mongodb.core.aggregation;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
import org.junit.Test;
import org.springframework.data.mongodb.core.aggregation.ExposedFields.ExposedField;
/**
* Unit tests for {@link ExposedFields}.
*
* @author Oliver Gierke
* @author Thomas Darimont
*/
public class ExposedFieldsUnitTests {
@Test(expected = IllegalArgumentException.class)
public void rejectsNullFields() {
ExposedFields.from((ExposedField) null);
}
@Test(expected = IllegalArgumentException.class)
public void rejectsNullFieldsForSynthetics() {
ExposedFields.synthetic(null);
}
@Test(expected = IllegalArgumentException.class)
public void rejectsNullFieldsForNonSynthetics() {
ExposedFields.nonSynthetic(null);
}
@Test
public void exposesSingleField() {
ExposedFields fields = ExposedFields.synthetic(Fields.fields("foo"));
assertThat(fields.exposesSingleFieldOnly(), is(true));
fields = fields.and(new ExposedField("bar", true));
assertThat(fields.exposesSingleFieldOnly(), is(false));
}
}