/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.flink.api.java.summarize.aggregation;
import org.apache.flink.api.java.summarize.StringColumnSummary;
import org.apache.flink.types.StringValue;
import org.junit.Assert;
public class StringValueSummaryAggregatorTest extends StringSummaryAggregatorTest {
/**
* Helper method for summarizing a list of values.
*
* This method breaks the rule of "testing only one thing" by aggregating and combining
* a bunch of different ways.
*/
@Override
protected StringColumnSummary summarize(String... values) {
StringValue[] stringValues = new StringValue[values.length];
for(int i = 0; i < values.length; i++) {
if (values[i] != null) {
stringValues[i] = new StringValue(values[i]);
}
}
return new AggregateCombineHarness<StringValue,StringColumnSummary,ValueSummaryAggregator.StringValueSummaryAggregator>(){
@Override
protected void compareResults(StringColumnSummary result1, StringColumnSummary result2) {
Assert.assertEquals(result1.getEmptyCount(), result2.getEmptyCount());
Assert.assertEquals(result1.getMaxLength(), result2.getMaxLength());
Assert.assertEquals(result1.getMinLength(), result2.getMinLength());
if (result1.getMeanLength() == null) {
Assert.assertEquals(result1.getMeanLength(), result2.getMeanLength());
}
else {
Assert.assertEquals(result1.getMeanLength().doubleValue(), result2.getMeanLength().doubleValue(), 1e-5d);
}
Assert.assertEquals(result1.getNullCount(), result2.getNullCount());
Assert.assertEquals(result1.getNonNullCount(), result2.getNonNullCount());
}
}.summarize(stringValues);
}
}