masteryhx commented on code in PR #23355:
URL: https://github.com/apache/flink/pull/23355#discussion_r1318142694
##########
flink-runtime/src/test/java/org/apache/flink/runtime/state/StateBackendTestBase.java:
##########
@@ -500,6 +493,7 @@ public void testGetKeysAndNamespaces() throws Exception {
keysByNamespace.computeIfAbsent(entry.f1,
k -> new HashSet<>());
assertTrue("Duplicate key for namespace",
keys.add(entry.f0));
});
+ assertThat(keysByNamespace.size(), is(namespaces.length));
Review Comment:
What you mentioned is a good way for Junit 5 which tells us not to assert in
the for loop for collection.
What you added in Junit 4 is not a same way, just as the website said,
'Don’t use Hamcrest'.
And it's a deprecated method.
##########
flink-runtime/src/test/java/org/apache/flink/runtime/state/StateBackendTestBase.java:
##########
@@ -500,6 +493,7 @@ public void testGetKeysAndNamespaces() throws Exception {
keysByNamespace.computeIfAbsent(entry.f1,
k -> new HashSet<>());
assertTrue("Duplicate key for namespace",
keys.add(entry.f0));
});
+ assertThat(keysByNamespace.size(), is(namespaces.length));
Review Comment:
What you mentioned is a good way for Junit 5 which tells us not to assert in
the for loop for collection.
What you added in Junit 4 is not a same way, just as the website said,
'Don’t use Hamcrest'.
And it's a deprecated method.
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