/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.rdb.sharding.merger.pipeline.reducer;
import com.dangdang.ddframe.rdb.sharding.merger.ResultSetFactory;
import com.dangdang.ddframe.rdb.sharding.merger.fixture.MockResultSet;
import com.dangdang.ddframe.rdb.sharding.parser.result.merger.Limit;
import com.dangdang.ddframe.rdb.sharding.parser.result.merger.MergeContext;
import org.junit.Test;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Arrays;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
public final class IteratorResultSetTest {
@Test
public void assertNext() throws SQLException {
ResultSet resultSet = ResultSetFactory.getResultSet(Arrays.<ResultSet>asList(new MockResultSet<>(1), new MockResultSet<>(2, 4), new MockResultSet<Integer>()), new MergeContext());
int count = 0;
while (resultSet.next()) {
count++;
}
assertThat(count, is(3));
}
@Test
public void assertNextWithLimitForAllData() throws SQLException {
MergeContext mergeContext = new MergeContext();
mergeContext.setLimit(new Limit(1, 10, -1, -1));
ResultSet resultSet = ResultSetFactory.getResultSet(Arrays.<ResultSet>asList(new MockResultSet<>(1), new MockResultSet<>(2, 4), new MockResultSet<Integer>()), mergeContext);
int count = 0;
while (resultSet.next()) {
count++;
}
assertThat(count, is(2));
}
@Test
public void assertNextWithLimitForPartData() throws SQLException {
MergeContext mergeContext = new MergeContext();
mergeContext.setLimit(new Limit(1, 1, -1, -1));
ResultSet resultSet = ResultSetFactory.getResultSet(Arrays.<ResultSet>asList(new MockResultSet<>(1), new MockResultSet<>(2, 4), new MockResultSet<Integer>()), mergeContext);
int count = 0;
while (resultSet.next()) {
count++;
}
assertThat(count, is(1));
}
}