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[Update] add time field

This commit is contained in:
@hangga 2023-11-03 15:45:12 +07:00
parent 39bc0b9eaa
commit 899700f27e
1 changed files with 37 additions and 7 deletions
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44
core-java-modules/core-java-uuid/src/test/java/com/baeldung/uuid/UUIDPositiveLongGeneratorUnitTest.java
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@ -6,8 +6,7 @@ import org.slf4j.LoggerFactory;
import java.lang.reflect.Method; import java.lang.reflect.Method;
import java.text.DecimalFormat; import java.text.DecimalFormat;
import java.util.HashSet; import java.util.*;
import java.util.Set;
import static org.assertj.core.api.Assertions.assertThat; import static org.assertj.core.api.Assertions.assertThat;
@ -17,8 +16,11 @@ public class UUIDPositiveLongGeneratorUnitTest {
private final UUIDPositiveLongGenerator uuidLongGenerator = new UUIDPositiveLongGenerator(); private final UUIDPositiveLongGenerator uuidLongGenerator = new UUIDPositiveLongGenerator();
private final Logger logger = LoggerFactory.getLogger(UUIDPositiveLongGeneratorUnitTest.class); private final Logger logger = LoggerFactory.getLogger(UUIDPositiveLongGeneratorUnitTest.class);
List<Long> times = new ArrayList<>();
@Test @Test
void whenForeachGenerateLongValue_thenCollisionsCheck() throws Exception { void whenForeachGenerateLongValue_thenCollisionsCheck() throws Exception {
times.clear();
printTableHeader(); printTableHeader();
for (Method method : uuidLongGenerator.getClass().getDeclaredMethods()) { for (Method method : uuidLongGenerator.getClass().getDeclaredMethods()) {
collisionCheck(method); collisionCheck(method);
@ -26,16 +28,17 @@ public class UUIDPositiveLongGeneratorUnitTest {
} }
private void printTableHeader() { private void printTableHeader() {
logger.info(String.format("%-30s %-15s %-15s", "Approach(method name)", "collisions", "probability")); logger.info(String.format("%-30s %15s %15s %15s", "Approach(method name)", "collisions", "probability","Time"));
logger.info("-----------------------------------------------------------------------"); logger.info("--------------------------------------------------------------------------------");
} }
private void printOutput(String method, int collisionsCount, double collisionsProbability) { private void printOutput(String method, int collisionsCount, double collisionsProbability, String time) {
DecimalFormat decimalFormat = new DecimalFormat("#.#####"); DecimalFormat decimalFormat = new DecimalFormat("#.#####");
logger.info(String.format("%-30s %-15s %-15s", method, collisionsCount, decimalFormat.format(collisionsProbability))); logger.info(String.format("%-30s %15s %15s %15s", method, collisionsCount, decimalFormat.format(collisionsProbability),time));
} }
private void collisionCheck(Method method) throws Exception { private void collisionCheck(Method method) throws Exception {
long start = System.currentTimeMillis();
Set<Long> uniqueValues = new HashSet<>(); Set<Long> uniqueValues = new HashSet<>();
int collisions = 0; int collisions = 0;
for (int i = 0; i < NUMBER_OF_CHECKS; i++) { for (int i = 0; i < NUMBER_OF_CHECKS; i++) {
@ -46,7 +49,34 @@ public class UUIDPositiveLongGeneratorUnitTest {
} }
} }
double collisionsProbability = (double) collisions / NUMBER_OF_CHECKS; double collisionsProbability = (double) collisions / NUMBER_OF_CHECKS;
printOutput(method.getName(), collisions, collisionsProbability); long end = System.currentTimeMillis();
String time = convertMillisToTime(end - start);
printOutput(method.getName(), collisions, collisionsProbability, time);
assertThat(collisionsProbability).isLessThan(COLLISION_THRESHOLD); assertThat(collisionsProbability).isLessThan(COLLISION_THRESHOLD);
}
private String convertMillisToTime(long currentTimeMillis) {
long totalMilliseconds = currentTimeMillis % 1000;
times.add(totalMilliseconds);
long totalSeconds = (currentTimeMillis / 1000) % 60;
long totalMinutes = (currentTimeMillis / 60000) % 60;
long hours = (currentTimeMillis / 3600000);
StringJoiner stringBuffer = new StringJoiner("");
if (hours > 0){
stringBuffer.add(hours+"h ");
}
if (totalMinutes > 0){
stringBuffer.add(totalMinutes+" m ");
}
if (totalSeconds > 0){
stringBuffer.add(totalSeconds+" s ");
}
if (totalMilliseconds > 0){
stringBuffer.add(totalMilliseconds+" ms");
}
return stringBuffer.toString();
} }
} }