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Diffstat (limited to 'external/java8-tests/src/test/java/org/apache/spark/sql/Java8DatasetAggregatorSuite.java')
-rw-r--r-- | external/java8-tests/src/test/java/org/apache/spark/sql/Java8DatasetAggregatorSuite.java | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/external/java8-tests/src/test/java/org/apache/spark/sql/Java8DatasetAggregatorSuite.java b/external/java8-tests/src/test/java/org/apache/spark/sql/Java8DatasetAggregatorSuite.java new file mode 100644 index 0000000000..23abfa3970 --- /dev/null +++ b/external/java8-tests/src/test/java/org/apache/spark/sql/Java8DatasetAggregatorSuite.java @@ -0,0 +1,61 @@ +/* + * 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 test.org.apache.spark.sql.sources; + +import java.util.Arrays; + +import org.junit.Assert; +import org.junit.Test; +import scala.Tuple2; + +import org.apache.spark.sql.Dataset; +import org.apache.spark.sql.KeyValueGroupedDataset; +import org.apache.spark.sql.expressions.java.typed; + +/** + * Suite that replicates tests in JavaDatasetAggregatorSuite using lambda syntax. + */ +public class Java8DatasetAggregatorSuite extends JavaDatasetAggregatorSuiteBase { + @Test + public void testTypedAggregationAverage() { + KeyValueGroupedDataset<String, Tuple2<String, Integer>> grouped = generateGroupedDataset(); + Dataset<Tuple2<String, Double>> agged = grouped.agg(typed.avg(v -> (double)(v._2() * 2))); + Assert.assertEquals(Arrays.asList(tuple2("a", 3.0), tuple2("b", 6.0)), agged.collectAsList()); + } + + @Test + public void testTypedAggregationCount() { + KeyValueGroupedDataset<String, Tuple2<String, Integer>> grouped = generateGroupedDataset(); + Dataset<Tuple2<String, Long>> agged = grouped.agg(typed.count(v -> v)); + Assert.assertEquals(Arrays.asList(tuple2("a", 2), tuple2("b", 1)), agged.collectAsList()); + } + + @Test + public void testTypedAggregationSumDouble() { + KeyValueGroupedDataset<String, Tuple2<String, Integer>> grouped = generateGroupedDataset(); + Dataset<Tuple2<String, Double>> agged = grouped.agg(typed.sum(v -> (double)v._2())); + Assert.assertEquals(Arrays.asList(tuple2("a", 3.0), tuple2("b", 3.0)), agged.collectAsList()); + } + + @Test + public void testTypedAggregationSumLong() { + KeyValueGroupedDataset<String, Tuple2<String, Integer>> grouped = generateGroupedDataset(); + Dataset<Tuple2<String, Long>> agged = grouped.agg(typed.sumLong(v -> (long)v._2())); + Assert.assertEquals(Arrays.asList(tuple2("a", 3), tuple2("b", 3)), agged.collectAsList()); + } +} |