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JUnit 4 TestRule to run a test repeatedly for a specified amount of repititions
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import java.lang.annotation.Retention; | |
import java.lang.annotation.RetentionPolicy; | |
import java.lang.annotation.Target; | |
@Retention( RetentionPolicy.RUNTIME ) | |
@Target( { | |
java.lang.annotation.ElementType.METHOD | |
} ) | |
public @interface Repeat { | |
public abstract int times(); | |
} |
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import org.junit.rules.TestRule; | |
import org.junit.runner.Description; | |
import org.junit.runners.model.Statement; | |
public class RepeatRule implements TestRule { | |
private static class RepeatStatement extends Statement { | |
private final int times; | |
private final Statement statement; | |
private RepeatStatement( int times, Statement statement ) { | |
this.times = times; | |
this.statement = statement; | |
} | |
@Override | |
public void evaluate() throws Throwable { | |
for( int i = 0; i < times; i++ ) { | |
statement.evaluate(); | |
} | |
} | |
} | |
@Override | |
public Statement apply( Statement statement, Description description ) { | |
Statement result = statement; | |
Repeat repeat = description.getAnnotation( Repeat.class ); | |
if( repeat != null ) { | |
int times = repeat.times(); | |
result = new RepeatStatement( times, statement ); | |
} | |
return result; | |
} | |
} |
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