code moved from core-java to core-java-exceptions
This commit is contained in:
Marcos Lopez Gonzalez
@@ -1,26 +1,35 @@
|
||||
<project xmlns="http://maven.apache.org/POM/4.0.0"
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>com.baeldung.exception.numberformat</groupId>
|
||||
<artifactId>core-java-exceptions</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<name>core-java-exceptions</name>
|
||||
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
|
||||
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>com.baeldung.exception.numberformat</groupId>
|
||||
<artifactId>core-java-exceptions</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<name>core-java-exceptions</name>
|
||||
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>parent-java</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<relativePath>../../parent-java</relativePath>
|
||||
</parent>
|
||||
<parent>
|
||||
<groupId>com.baeldung</groupId>
|
||||
<artifactId>parent-java</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<relativePath>../../parent-java</relativePath>
|
||||
</parent>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>junit</groupId>
|
||||
<artifactId>junit</artifactId>
|
||||
<version>4.12</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
<properties>
|
||||
<commons-lang3.version>3.9</commons-lang3.version>
|
||||
</properties>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>junit</groupId>
|
||||
<artifactId>junit</artifactId>
|
||||
<version>4.12</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>org.apache.commons</groupId>
|
||||
<artifactId>commons-lang3</artifactId>
|
||||
<version>${commons-lang3.version}</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
</project>
|
||||
|
||||
@@ -0,0 +1,98 @@
|
||||
package com.baeldung.exceptions;
|
||||
|
||||
import java.time.LocalDate;
|
||||
import java.time.Period;
|
||||
import java.time.format.DateTimeParseException;
|
||||
import java.util.Objects;
|
||||
|
||||
/**
|
||||
* Utility class to find root cause exceptions.
|
||||
*/
|
||||
public class RootCauseFinder {
|
||||
|
||||
private RootCauseFinder() {
|
||||
}
|
||||
|
||||
public static Throwable findCauseUsingPlainJava(Throwable throwable) {
|
||||
Objects.requireNonNull(throwable);
|
||||
Throwable rootCause = throwable;
|
||||
while (rootCause.getCause() != null && rootCause.getCause() != rootCause) {
|
||||
rootCause = rootCause.getCause();
|
||||
}
|
||||
return rootCause;
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates the age of a person from a given date.
|
||||
*/
|
||||
static class AgeCalculator {
|
||||
|
||||
private AgeCalculator() {
|
||||
}
|
||||
|
||||
public static int calculateAge(String birthDate) {
|
||||
if (birthDate == null || birthDate.isEmpty()) {
|
||||
throw new IllegalArgumentException();
|
||||
}
|
||||
|
||||
try {
|
||||
return Period
|
||||
.between(parseDate(birthDate), LocalDate.now())
|
||||
.getYears();
|
||||
} catch (DateParseException ex) {
|
||||
throw new CalculationException(ex);
|
||||
}
|
||||
}
|
||||
|
||||
private static LocalDate parseDate(String birthDateAsString) {
|
||||
|
||||
LocalDate birthDate;
|
||||
try {
|
||||
birthDate = LocalDate.parse(birthDateAsString);
|
||||
} catch (DateTimeParseException ex) {
|
||||
throw new InvalidFormatException(birthDateAsString, ex);
|
||||
}
|
||||
|
||||
if (birthDate.isAfter(LocalDate.now())) {
|
||||
throw new DateOutOfRangeException(birthDateAsString);
|
||||
}
|
||||
|
||||
return birthDate;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static class CalculationException extends RuntimeException {
|
||||
|
||||
CalculationException(DateParseException ex) {
|
||||
super(ex);
|
||||
}
|
||||
}
|
||||
|
||||
static class DateParseException extends RuntimeException {
|
||||
|
||||
DateParseException(String input) {
|
||||
super(input);
|
||||
}
|
||||
|
||||
DateParseException(String input, Throwable thr) {
|
||||
super(input, thr);
|
||||
}
|
||||
}
|
||||
|
||||
static class InvalidFormatException extends DateParseException {
|
||||
|
||||
InvalidFormatException(String input, Throwable thr) {
|
||||
super("Invalid date format: " + input, thr);
|
||||
}
|
||||
}
|
||||
|
||||
static class DateOutOfRangeException extends DateParseException {
|
||||
|
||||
DateOutOfRangeException(String date) {
|
||||
super("Date out of range: " + date);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,7 +1,6 @@
|
||||
package com.baeldung.error;
|
||||
package com.baeldung.exception.error;
|
||||
|
||||
import org.junit.Assert;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
|
||||
public class ErrorGeneratorUnitTest {
|
||||
|
||||
@@ -0,0 +1,114 @@
|
||||
package com.baeldung.exceptions;
|
||||
|
||||
import com.google.common.base.Throwables;
|
||||
import org.apache.commons.lang3.exception.ExceptionUtils;
|
||||
import org.junit.jupiter.api.Assertions;
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
import java.time.LocalDate;
|
||||
import java.time.format.DateTimeParseException;
|
||||
import java.time.temporal.ChronoUnit;
|
||||
|
||||
import static com.baeldung.exceptions.RootCauseFinder.*;
|
||||
import static org.junit.jupiter.api.Assertions.assertTrue;
|
||||
|
||||
/**
|
||||
* Tests the {@link RootCauseFinder}.
|
||||
*/
|
||||
public class RootCauseFinderUnitTest {
|
||||
|
||||
@Test
|
||||
public void givenBirthDate_whenCalculatingAge_thenAgeReturned() {
|
||||
try {
|
||||
int age = AgeCalculator.calculateAge("1990-01-01");
|
||||
Assertions.assertEquals(1990, LocalDate
|
||||
.now()
|
||||
.minus(age, ChronoUnit.YEARS)
|
||||
.getYear());
|
||||
} catch (CalculationException e) {
|
||||
Assertions.fail(e.getMessage());
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenWrongFormatDate_whenFindingRootCauseUsingJava_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge("010102");
|
||||
} catch (CalculationException ex) {
|
||||
assertTrue(findCauseUsingPlainJava(ex) instanceof DateTimeParseException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenOutOfRangeDate_whenFindingRootCauseUsingJava_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge("2020-04-04");
|
||||
} catch (CalculationException ex) {
|
||||
assertTrue(findCauseUsingPlainJava(ex) instanceof DateOutOfRangeException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenNullDate_whenFindingRootCauseUsingJava_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge(null);
|
||||
} catch (Exception ex) {
|
||||
assertTrue(findCauseUsingPlainJava(ex) instanceof IllegalArgumentException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenWrongFormatDate_whenFindingRootCauseUsingApacheCommons_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge("010102");
|
||||
} catch (CalculationException ex) {
|
||||
assertTrue(ExceptionUtils.getRootCause(ex) instanceof DateTimeParseException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenOutOfRangeDate_whenFindingRootCauseUsingApacheCommons_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge("2020-04-04");
|
||||
} catch (CalculationException ex) {
|
||||
assertTrue(ExceptionUtils.getRootCause(ex) instanceof DateOutOfRangeException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenNullDate_whenFindingRootCauseUsingApacheCommons_thenRootCauseNotFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge(null);
|
||||
} catch (Exception ex) {
|
||||
assertTrue(ExceptionUtils.getRootCause(ex) instanceof IllegalArgumentException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenWrongFormatDate_whenFindingRootCauseUsingGuava_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge("010102");
|
||||
} catch (CalculationException ex) {
|
||||
assertTrue(Throwables.getRootCause(ex) instanceof DateTimeParseException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenOutOfRangeDate_whenFindingRootCauseUsingGuava_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge("2020-04-04");
|
||||
} catch (CalculationException ex) {
|
||||
assertTrue(Throwables.getRootCause(ex) instanceof DateOutOfRangeException);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void givenNullDate_whenFindingRootCauseUsingGuava_thenRootCauseFound() {
|
||||
try {
|
||||
AgeCalculator.calculateAge(null);
|
||||
} catch (Exception ex) {
|
||||
assertTrue(Throwables.getRootCause(ex) instanceof IllegalArgumentException);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user