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Implemented Stream forEach if/else unit test

This commit is contained in:
RoscoeLotriet 2018-10-01 14:18:24 +02:00
parent cdee973e63
commit 379eab82d6
2 changed files with 41 additions and 42 deletions
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42
core-java-8/src/main/java/com/baeldung/stream/conditional/StreamForEachIfElseLogic.java
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@ -1,42 +0,0 @@
package com.baeldung.stream.conditional;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Stream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class StreamForEachIfElseLogic {
private static final Logger LOG = LoggerFactory.getLogger(StreamForEachIfElseLogic.class);
public static void main(String[] args) {
ifElseLogic();
}
private static void ifElseLogic() {
List<Integer> ints = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
ints.stream()
.forEach(i -> {
if (i.intValue() % 2 == 0) {
LOG.info("{} is even", i);
} else {
LOG.info("{} is odd", i);
}
});
Stream<Integer> evenIntegers = ints.stream()
.filter(i -> i.intValue() % 2 == 0);
Stream<Integer> oddIntegers = ints.stream()
.filter(i -> i.intValue() % 2 != 0);
evenIntegers.forEach(i -> LOG.info("{} is even", i));
oddIntegers.forEach(i -> LOG.info("{} is odd", i));
}
}

41
core-java-8/src/test/java/com/baeldung/stream/conditional/StreamForEachIfElseUnitTest.java Normal file
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@ -0,0 +1,41 @@
package com.baeldung.stream.conditional;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Stream;
import org.junit.Assert;
import org.junit.Test;
public class StreamForEachIfElseUnitTest {
@Test
public final void givenIntegerStream_whenCheckingIntegerParityWithIfElse_thenEnsureCorrectParity() {
List<Integer> ints = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
ints.stream()
.forEach(i -> {
if (i.intValue() % 2 == 0) {
Assert.assertTrue(i.intValue() + " is not even", i.intValue() % 2 == 0);
} else {
Assert.assertTrue(i.intValue() + " is not odd", i.intValue() % 2 != 0);
}
});
}
@Test
public final void givenIntegerStream_whenCheckingIntegerParityWithStreamFilter_thenEnsureCorrectParity() {
List<Integer> ints = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
Stream<Integer> evenIntegers = ints.stream()
.filter(i -> i.intValue() % 2 == 0);
Stream<Integer> oddIntegers = ints.stream()
.filter(i -> i.intValue() % 2 != 0);
evenIntegers.forEach(i -> Assert.assertTrue(i.intValue() + " is not even", i.intValue() % 2 == 0));
oddIntegers.forEach(i -> Assert.assertTrue(i.intValue() + " is not odd", i.intValue() % 2 != 0));
}
}