update : add space after ()
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@ -4,7 +4,6 @@ import org.junit.jupiter.api.Test;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.text.DecimalFormat;
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import java.util.HashSet;
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@ -13,7 +12,7 @@ import java.util.Set;
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import static org.assertj.core.api.Assertions.assertThat;
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public class UUIDPositiveLongGeneratorUnitTest {
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private final static int n = 1000000;
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private final static int N = 1000000;
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private final static double COLLISION_THRESHOLD = 0.001;
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private final UUIDPositiveLongGenerator uuidLongGenerator = new UUIDPositiveLongGenerator();
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private final Logger logger = LoggerFactory.getLogger(UUIDPositiveLongGeneratorUnitTest.class);
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@ -41,14 +40,14 @@ public class UUIDPositiveLongGeneratorUnitTest {
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private void collisionCheck(Method method) throws Exception {
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Set<Long> uniqueValues = new HashSet<>();
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int collisions = 0;
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for (int i = 0; i < n; i++) {
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for (int i = 0; i < N; i++) {
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long uniqueValue = (long) method.invoke(uuidLongGenerator);
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assertThat(uniqueValue).isPositive();
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if (!uniqueValues.add(uniqueValue)) {
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collisions++;
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}
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}
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double collisionsProbability = (double) collisions / n;
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double collisionsProbability = (double) collisions / N;
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printOutput(method.getName(), collisions, collisionsProbability);
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assertThat(collisionsProbability).isLessThan(COLLISION_THRESHOLD);
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}
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