Examples with IntStream java.util.stream.IntStream used on opensource projects

Example 66 with IntStream

use of java.util.stream.IntStream in project waltz by khartec.

the class RandomUtilities_randomlySizedIntStreamTest method simpleRandomlySizedIntStream1.

@Test
public void simpleRandomlySizedIntStream1() {
    IntStream val = RandomUtilities.randomlySizedIntStream(0, 1);
    assertEquals(0, val.count());
}

Example 67 with IntStream

use of java.util.stream.IntStream in project TeeTime by teetime-framework.

the class ThreeStagesPushPullIT method shouldExecutePipelineCorrectlyManyElements.

private void shouldExecutePipelineCorrectlyManyElements(final int numElements, final int numThreads) {
    List<Integer> processedElements = new ArrayList<>();
    IntStream inputElements = IntStream.iterate(0, i -> i + 1).limit(numElements);
    Configuration config = new Configuration().from(new StreamProducer<>(inputElements)).to(new Counter<>()).end(new CollectorSink<>(processedElements));
    TeeTimeScheduler scheduling = new PushPullScheduling(config);
    Execution<Configuration> execution = new Execution<>(config, true, scheduling);
    execution.executeBlocking();
    for (int i = 0; i < numElements; i++) {
        Integer actualElement = processedElements.get(i);
        assertThat(actualElement, is(i));
    }
    assertThat(processedElements, hasSize(numElements));
}

Example 68 with IntStream

use of java.util.stream.IntStream in project TeeTime by teetime-framework.

the class StreamProducerTest method testIntStream.

@Test
public void testIntStream() throws Exception {
    IntStream inputElements = IntStream.iterate(1, i -> i + 1).limit(3);
    StreamProducer<Integer> producer = new StreamProducer<>(inputElements);
    final List<Integer> actualElements = new ArrayList<>();
    test(producer).and().receive(actualElements).from(producer.getOutputPort()).start();
    assertThat(actualElements, contains(1, 2, 3));
}

Example 69 with IntStream

use of java.util.stream.IntStream in project tutorials by eugenp.

the class GuavaStreamsUnitTest method createStreamsWithOptionalInt.

@Test
public void createStreamsWithOptionalInt() {
    IntStream streamFromOptionalInt = Streams.stream(OptionalInt.of(1));
    // Assert.assertNotNull(streamFromOptionalInt);
    assertEquals(streamFromOptionalInt.count(), 1);
}

Example 70 with IntStream

use of java.util.stream.IntStream in project tutorials by eugenp.

the class VavrSampler method jdkFlatMapping.

public static void jdkFlatMapping() {
    System.out.println("JDK FlatMap -> Uncomment line 68 to test");
    System.out.println("====================================");
    int[][] intOfInts = new int[][] { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
    IntStream mapToInt = Arrays.stream(intOfInts).map(intArr -> Arrays.stream(intArr)).flatMapToInt(val -> val.map(n -> {
        return n * n;
    })).peek(n -> System.out.println("Peeking at " + n));
// Uncomment to execute pipeline
// mapToInt.forEach(n -> System.out.println("FlatMapped Result "+n));
}