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/*
* Copyright (c) 2007 Mockito contributors
* This program is made available under the terms of the MIT License.
*/
package org.mockitoutil;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
import static java.lang.String.format;
public class RetryRule implements TestRule {
private final TestRule innerRule;
public static RetryRule attempts(final int attempts) {
return new RetryRule(new NumberedAttempts(attempts));
}
private RetryRule(TestRule innerRule) {
this.innerRule = innerRule;
}
public Statement apply(final Statement base, final Description description) {
return innerRule.apply(base, description);
}
private static class NumberedAttempts implements TestRule {
private final int attempts;
NumberedAttempts(int attempts) {
assert attempts > 1;
this.attempts = attempts;
}
@Override
public Statement apply(final Statement base, final Description description) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
for (int remainingAttempts = attempts; remainingAttempts > 0 ; remainingAttempts--) {
try {
base.evaluate();
} catch (Throwable throwable) {
if (remainingAttempts < 0) {
throw new AssertionError(format("Tried this test + %d times and failed", attempts))
.initCause(throwable);
}
}
}
}
};
}
}
}
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