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package com.vaadin.data.provider;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import java.util.List;
import java.util.function.IntFunction;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import org.junit.Test;
public class ReplaceDataProviderTest {
public static class BeanWithEquals extends Bean {
BeanWithEquals(int id) {
super(id);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
BeanWithEquals that = (BeanWithEquals) o;
return id == that.id;
}
@Override
public int hashCode() {
return id;
}
}
public static class Bean {
protected final int id;
private final String fluff;
Bean(int id) {
this.id = id;
this.fluff = "Fluff #" + id;
}
public int getId() {
return id;
}
@SuppressWarnings("unused")
public String getFluff() {
return fluff;
}
}
@Test
public void testBeanEquals() {
doTest(BeanWithEquals::new);
}
@Test
public void testBeanSame() {
doTest(Bean::new);
}
private <SOME_BEAN> void doTest(IntFunction<SOME_BEAN> beanConstructor) {
DataCommunicator<SOME_BEAN> dataCommunicator = new DataCommunicator<>();
List<SOME_BEAN> beans1 = createCollection(beanConstructor);
ListDataProvider<SOME_BEAN> dataProvider = new ListDataProvider<>(
beans1);
dataCommunicator.setDataProvider(dataProvider, null);
dataCommunicator.pushData(1, beans1);
SOME_BEAN bean1_17 = beans1.get(17);
String key1_17 = dataCommunicator.getKeyMapper().key(bean1_17);
assertSame(bean1_17, dataCommunicator.getKeyMapper().get(key1_17));
List<SOME_BEAN> beans2 = createCollection(beanConstructor);
dataProvider = new ListDataProvider<>(beans2);
dataCommunicator.setDataProvider(dataProvider, null);
dataCommunicator.pushData(1, beans2);
SOME_BEAN bean2_17 = beans2.get(17);
String key2_17 = dataCommunicator.getKeyMapper().key(bean2_17);
assertSame(bean2_17, dataCommunicator.getKeyMapper().get(key2_17));
assertNotEquals(key2_17, key1_17);
assertNull(dataCommunicator.getKeyMapper().get(key1_17));
}
private <SOME_BEAN> List<SOME_BEAN> createCollection(
IntFunction<SOME_BEAN> beanConstructor) {
return IntStream.range(1, 100).mapToObj(beanConstructor)
.collect(Collectors.toList());
}
}
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