raboof commented on code in PR #1868:
URL: https://github.com/apache/pekko/pull/1868#discussion_r2109337578
##########
stream-tests/src/test/java/org/apache/pekko/stream/javadsl/SourceTest.java:
##########
@@ -816,6 +816,14 @@ public void mustBeAbleToUseStatefulMap() throws Exception {
Assert.assertEquals("[1, 2][3, 4][5]",
grouped.toCompletableFuture().get(3, TimeUnit.SECONDS));
}
+ @Test
+ public void mustBeAbleToUseDistinctUntilChanged() throws Exception {
+ final java.lang.Iterable<Integer> input = Arrays.asList(1, 1, 1, 2, 3, 3,
3, 4, 5, 5, 5);
Review Comment:
(here, too)
##########
docs/src/test/java/jdocs/stream/operators/SourceOrFlow.java:
##########
@@ -608,6 +608,20 @@ void filterNotExample() {
// #filterNot
}
+ void distinctUntilChangedExample() {
+ // #distinctUntilChanged
+ Source.from(Arrays.asList(1, 2, 2, 3, 3, 4))
+ .distinctUntilChanged()
+ .runForeach(System.out::println, system);
+ // prints:
+ // 1
+ // 2
+ // 3
+ // 4
Review Comment:
Can we add another '2' to the example to show what happens when a value
shows up that has been seen before, but was not the most recent value?
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