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libraries-stream/src/test/java/com/baeldung/stream/JoolMergeStreamsUnitTest.java
34 строки
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panos-kakos
[JAVA-22519] Created new module libraries-stream and added 5 articles (#15403)
13 дек 2023, 10:40
13 дек 2023, 10:40
8daf19c
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package com.baeldung.stream; import org.jooq.lambda.Seq; import org.junit.Assert; import org.junit.Test; import java.util.Arrays; import java.util.stream.Collectors; import java.util.stream.Stream; import static junit.framework.TestCase.assertEquals; public class JoolMergeStreamsUnitTest { @Test public void givenTwoStreams_whenMergingStreams_thenResultingStreamContainsElementsFromBothStreams() { Stream<Integer> seq1 = Stream.of(1, 3, 5); Stream<Integer> seq2 = Stream.of(2, 4, 6); Stream<Integer> resultingSeq = Seq.ofType(seq1, Integer.class).append(seq2); assertEquals(Arrays.asList(1, 3, 5, 2, 4, 6), resultingSeq.collect(Collectors.toList())); } @Test public void givenThreeStreams_whenAppendingAndPrependingStreams_thenResultingStreamContainsElementsFromAllStreams() { Stream<String> seq = Stream.of("foo", "bar"); Stream<String> openingBracketSeq = Stream.of("["); Stream<String> closingBracketSeq = Stream.of("]"); Stream<String> resultingStream = Seq.ofType(seq, String.class).append(closingBracketSeq).prepend(openingBracketSeq); Assert.assertEquals(Arrays.asList("[", "foo", "bar", "]"), resultingStream.collect(Collectors.toList())); } }