Github user greghogan commented on a diff in the pull request: https://github.com/apache/flink/pull/5099#discussion_r155625966 --- Diff: flink-runtime/src/test/java/org/apache/flink/runtime/metrics/MetricRegistryImplTest.java --- @@ -76,8 +76,27 @@ public void testIsShutdown() { public void testReporterInstantiation() { Configuration config = new Configuration(); + config.setString(ConfigConstants.METRICS_REPORTER_PREFIX + "test." + ConfigConstants.METRICS_REPORTER_CLASS_SUFFIX, TestReporter1.class.getName()); + + MetricRegistryImpl metricRegistry = new MetricRegistryImpl(MetricRegistryConfiguration.fromConfiguration(config)); + + assertTrue(metricRegistry.getReporters().size() == 1); + + Assert.assertTrue(TestReporter1.wasOpened); + + metricRegistry.shutdown(); + } + + /** + * Verifies that the reporter name list is correctly used to determine which reporters should be instantiated. + */ + @Test + public void testReporterInclusion() { + Configuration config = new Configuration(); + config.setString(MetricOptions.REPORTERS_LIST, "test"); config.setString(ConfigConstants.METRICS_REPORTER_PREFIX + "test." + ConfigConstants.METRICS_REPORTER_CLASS_SUFFIX, TestReporter1.class.getName()); + config.setString(ConfigConstants.METRICS_REPORTER_PREFIX + "test1." + ConfigConstants.METRICS_REPORTER_CLASS_SUFFIX, TestReporter1.class.getName()); --- End diff -- Use a `TestReporter2` and verify not opened? Do we need both `testReporterInstantiation` and `testReporterInclusion`?
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