/*
* 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.beam.sdk.transforms;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import org.apache.beam.sdk.coders.BigEndianIntegerCoder;
import org.apache.beam.sdk.coders.KvCoder;
import org.apache.beam.sdk.coders.StringUtf8Coder;
import org.apache.beam.sdk.testing.PAssert;
import org.apache.beam.sdk.testing.TestPipeline;
import org.apache.beam.sdk.testing.ValidatesRunner;
import org.apache.beam.sdk.values.KV;
import org.apache.beam.sdk.values.PCollection;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for Values transform.
*/
@RunWith(JUnit4.class)
public class ValuesTest {
@SuppressWarnings({"rawtypes", "unchecked"})
static final KV<String, Integer>[] TABLE = new KV[] {
KV.of("one", 1),
KV.of("two", 2),
KV.of("three", 3),
KV.of("four", 4),
KV.of("dup", 4)
};
@SuppressWarnings({"rawtypes", "unchecked"})
static final KV<String, Integer>[] EMPTY_TABLE = new KV[] {
};
@Rule
public final TestPipeline p = TestPipeline.create();
@Test
@Category(ValidatesRunner.class)
public void testValues() {
PCollection<KV<String, Integer>> input =
p.apply(Create.of(Arrays.asList(TABLE)).withCoder(
KvCoder.of(StringUtf8Coder.of(), BigEndianIntegerCoder.of())));
PCollection<Integer> output = input.apply(Values.<Integer>create());
PAssert.that(output)
.containsInAnyOrder(1, 2, 3, 4, 4);
p.run();
}
@Test
@Category(ValidatesRunner.class)
public void testValuesEmpty() {
PCollection<KV<String, Integer>> input =
p.apply(Create.of(Arrays.asList(EMPTY_TABLE)).withCoder(
KvCoder.of(StringUtf8Coder.of(), BigEndianIntegerCoder.of())));
PCollection<Integer> output = input.apply(Values.<Integer>create());
PAssert.that(output).empty();
p.run();
}
@Test
public void testValuesGetName() {
assertEquals("Values", Values.<Integer>create().getName());
}
}