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bereng pushed a commit to branch cassandra-3.0
in repository https://gitbox.apache.org/repos/asf/cassandra.git
The following commit(s) were added to refs/heads/cassandra-3.0 by this push:
new fdabda1 patch by Berenguer Blasi; reviewed by Andrés de la Peña for
CASSANDRA-16654
fdabda1 is described below
commit fdabda1da849efdb2f0066a341b9cc24de7fd05c
Author: Bereng <berenguerbl...@gmail.com>
AuthorDate: Mon May 17 09:45:24 2021 +0200
patch by Berenguer Blasi; reviewed by Andrés de la Peña for CASSANDRA-16654
Co-authored-by: Andrés de la Peña <a.penya.gar...@gmail.com>
Co-authored-by: Bereng <berenguerbl...@gmail.com>
---
.../org/apache/cassandra/RepeatableRunner.java | 109 +++++++++++++++++++++
1 file changed, 109 insertions(+)
diff --git a/test/unit/org/apache/cassandra/RepeatableRunner.java
b/test/unit/org/apache/cassandra/RepeatableRunner.java
new file mode 100644
index 0000000..75f3331
--- /dev/null
+++ b/test/unit/org/apache/cassandra/RepeatableRunner.java
@@ -0,0 +1,109 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.cassandra;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.junit.internal.builders.AllDefaultPossibilitiesBuilder;
+import org.junit.runner.Description;
+import org.junit.runner.Runner;
+import org.junit.runner.notification.RunNotifier;
+import org.junit.runners.BlockJUnit4ClassRunner;
+import org.junit.runners.model.RunnerBuilder;
+
+/**
+ * This class comes useful when debugging flaky tests that will fail only when
the full test suite is ran. It is
+ * intended for test failure investigation only.
+ * <p>
+ * Decorate your class with the runner and iterations you want. Defaults to 10.
+ * Beware of tests that change singleton status as those won't work.
+ * <pre>{@code
+ * @RunWith(RepeatableRunner.class)
+ * @RepeatableRunnerConfiguration(iterations = 2, runner =
BlockJUnit4ClassRunner.class)
+ * public class MyTest
+ * {
+ * ...
+ * }
+ * }</pre>
+ */
+public class RepeatableRunner extends Runner
+{
+ private static final int DEFAULT_REPETITIONS = 10;
+ private static final Class<? extends Runner> DEFAULT_RUNNER_CLASS =
BlockJUnit4ClassRunner.class;
+
+ private final Runner runner;
+ private final int iterations;
+
+ public RepeatableRunner(Class<?> testClass) throws Throwable
+ {
+ Class<? extends Runner> runnerClass = DEFAULT_RUNNER_CLASS;
+
+ if (testClass.isAnnotationPresent(RepeatableRunnerConfiguration.class))
+ {
+ RepeatableRunnerConfiguration configuration =
testClass.getAnnotation(RepeatableRunnerConfiguration.class);
+ iterations = configuration.iterations();
+ runnerClass = configuration.runner();
+ }
+ else
+ {
+ iterations = DEFAULT_REPETITIONS;
+ }
+
+ runner = buildRunner(runnerClass, testClass);
+ }
+
+ @Override
+ public Description getDescription()
+ {
+ return runner.getDescription();
+ }
+
+ @Override
+ public void run(RunNotifier notifier)
+ {
+ for (int i = 0; i < iterations; i++)
+ {
+ runner.run(notifier);
+ }
+ }
+
+ private static Runner buildRunner(Class<? extends Runner> runnerClass,
Class<?> testClass) throws Throwable
+ {
+ try
+ {
+ return
runnerClass.getConstructor(Class.class).newInstance(testClass);
+ }
+ catch (NoSuchMethodException e)
+ {
+ return runnerClass.getConstructor(Class.class, RunnerBuilder.class)
+ .newInstance(testClass, new
AllDefaultPossibilitiesBuilder(true));
+ }
+ }
+
+ @Retention(RetentionPolicy.RUNTIME)
+ @Target(ElementType.TYPE)
+ public @interface RepeatableRunnerConfiguration
+ {
+ int iterations() default DEFAULT_REPETITIONS;
+
+ Class<? extends Runner> runner() default BlockJUnit4ClassRunner.class;
+ }
+}
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