[ https://issues.apache.org/jira/browse/KAFKA-8977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16945729#comment-16945729 ]
Bruno Cadonna commented on KAFKA-8977: -------------------------------------- Thank you for picking this up. IMO we should mock {{StreamsMetricsImpl}} in the test where we do not directly test {{StreamsMetricsImpl}}. However, there is no need to write a mock. I would use {{EasyMock}} or {{PowerMock}} to mock {{StreamsMetricsImpl}}. You would use {{EasyMock}} if only instance methods need to be mocked and {{PowerMock}} if class methods or final methods need to be mocked. You can find an example of both types of mocks for {{StreamsMetricsImpl}} in {{NamedCacheMetricsTest}}. > Remove MockStreamsMetrics Since it is not a Mock > ------------------------------------------------ > > Key: KAFKA-8977 > URL: https://issues.apache.org/jira/browse/KAFKA-8977 > Project: Kafka > Issue Type: Improvement > Components: streams > Reporter: Bruno Cadonna > Assignee: bibin sebastian > Priority: Minor > Labels: newbie > > The class {{MockStreamsMetrics}} is used throughout unit tests as a mock but > it is not really a mock since it only hides two parameters of the > {{StreamsMetricsImpl}} constructor. Either a real mock or the real > {{StreamsMetricsImpl}} should be used in the tests. -- This message was sent by Atlassian Jira (v8.3.4#803005)