/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* 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 com.asakusafw.dmdl.java.emitter.driver;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.util.Arrays;
import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.junit.Before;
import org.junit.Test;
import com.asakusafw.dmdl.java.GeneratorTesterRoot;
import com.asakusafw.vocabulary.model.Joined;
import com.asakusafw.vocabulary.model.Key;
/**
* Test for {@link JoinDriver}.
*/
public class JoinDriverTest extends GeneratorTesterRoot {
/**
* Initializes the test.
* @throws Exception if some errors were occurred
*/
@Before
public void setUp() throws Exception {
emitDrivers.add(new JoinDriver());
}
/**
* simple join.
*/
@Test
public void simple_join() {
ModelLoader loader = generate();
Joined annotation = loader.modelType("Simple").getAnnotation(Joined.class);
assertThat(annotation, not(nullValue()));
assertThat(annotation.terms().length, is(2));
Joined.Term a = annotation.terms()[0];
assertThat(a.source(), eq(loader.modelType("A")));
assertThat(a.mappings().length, is(2));
assertThat(a.mappings(), hasItemInArray(mapping("sid", "sid")));
assertThat(a.mappings(), hasItemInArray(mapping("value", "aValue")));
assertThat(a.shuffle(), is(grouping("sid")));
Joined.Term b = annotation.terms()[1];
assertThat(b.source(), eq(loader.modelType("B")));
assertThat(b.mappings().length, is(2));
assertThat(b.mappings(), hasItemInArray(mapping("sid", "sid")));
assertThat(b.mappings(), hasItemInArray(mapping("value", "bValue")));
assertThat(b.shuffle(), is(grouping("sid")));
}
/**
* join with renaming key.
*/
@Test
public void join_rename_key() {
ModelLoader loader = generate();
Joined annotation = loader.modelType("Simple").getAnnotation(Joined.class);
assertThat(annotation, not(nullValue()));
assertThat(annotation.terms().length, is(2));
Joined.Term a = annotation.terms()[0];
assertThat(a.source(), eq(loader.modelType("A")));
assertThat(a.mappings().length, is(2));
assertThat(a.mappings(), hasItemInArray(mapping("sid", "key")));
assertThat(a.mappings(), hasItemInArray(mapping("value", "aValue")));
assertThat(a.shuffle(), is(grouping("sid")));
Joined.Term b = annotation.terms()[1];
assertThat(b.source(), eq(loader.modelType("B")));
assertThat(b.mappings().length, is(2));
assertThat(b.mappings(), hasItemInArray(mapping("sid", "key")));
assertThat(b.mappings(), hasItemInArray(mapping("value", "bValue")));
assertThat(b.shuffle(), is(grouping("sid")));
}
/**
* simple record.
*/
@Test
public void simple_record() {
ModelLoader loader = generate();
Joined annotation = loader.modelType("Simple").getAnnotation(Joined.class);
assertThat(annotation, nullValue());
}
private Matcher<Key> grouping(final String... properties) {
return new BaseMatcher<Key>() {
@Override
public boolean matches(Object object) {
if (object instanceof Key) {
Key elem = (Key) object;
if (Arrays.equals(elem.group(), properties) == false) {
return false;
}
}
return true;
}
@Override
public void describeTo(Description desc) {
desc.appendText(Arrays.toString(properties));
}
};
}
private Matcher<Joined.Mapping> mapping(final String src, final String dst) {
return new BaseMatcher<Joined.Mapping>() {
@Override
public boolean matches(Object object) {
if (object instanceof Joined.Mapping) {
Joined.Mapping elem = (Joined.Mapping) object;
if (src.equals(elem.source()) == false) {
return false;
}
if (dst.equals(elem.destination()) == false) {
return false;
}
}
return true;
}
@Override
public void describeTo(Description desc) {
desc.appendText(src + " -> " + dst);
}
};
}
private Matcher<Object> eq(Object object) {
return is(object);
}
}