mjsax commented on a change in pull request #9000:
URL: https://github.com/apache/kafka/pull/9000#discussion_r474887535
##########
File path:
streams/src/test/java/org/apache/kafka/streams/kstream/internals/KStreamImplTest.java
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@@ -1865,6 +1865,17 @@ public void
shouldNotAllowNullNamedOnTransformWithStoreName() {
assertThat(exception.getMessage(), equalTo("named can't be null"));
}
+ @Test
+ public void shouldNotAllowBadTransformerSupplierOnFlatTransform() {
Review comment:
Yes, those suppliers must return a new instance on `get()`, too, so the
new check should be done for them as well.
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