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BAEL-9494: Converting Phone Numbers into International Format (E.164)… #18948

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Nov 18, 2025
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BAEL-9494: Converting Phone Numbers into International Format (E.164)… #18948

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34 changes: 26 additions & 8 deletions libraries-2/src/test/java/com/baeldung/libphonenumber/LibPhoneNumberUnitTest.java
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Original file line number Diff line number Diff line change
@@ -1,15 +1,13 @@
package com.baeldung.libphonenumber;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import org.junit.Test;

import com.google.i18n.phonenumbers.NumberParseException;
import com.google.i18n.phonenumbers.PhoneNumberUtil;
import com.google.i18n.phonenumbers.PhoneNumberUtil.PhoneNumberType;
import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber;
import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber.CountryCodeSource;
import org.junit.Test;

import static org.junit.Assert.*;

public class LibPhoneNumberUnitTest {

Expand Down Expand Up @@ -54,7 +52,7 @@ public void givenPhoneNumber_whenPossibleForType_thenValid() {
public void givenPhoneNumber_whenPossible_thenValid() {
PhoneNumber number = new PhoneNumber();
number.setCountryCode(1)
.setNationalNumber(123000L);
.setNationalNumber(123000L);
assertFalse(phoneNumberUtil.isPossibleNumber(number));
assertFalse(phoneNumberUtil.isPossibleNumber("+1 343 253 00000", "US"));
assertFalse(phoneNumberUtil.isPossibleNumber("(343) 253-00000", "US"));
Expand All @@ -69,11 +67,31 @@ public void givenPhoneNumber_whenNumberGeographical_thenValid() throws NumberPar
assertTrue(phoneNumberUtil.isNumberGeographical(phone));

phone = new PhoneNumber().setCountryCode(1)
.setNationalNumber(2530000L);
.setNationalNumber(2530000L);
assertFalse(phoneNumberUtil.isNumberGeographical(phone));

phone = new PhoneNumber().setCountryCode(800)
.setNationalNumber(12345678L);
.setNationalNumber(12345678L);
assertFalse(phoneNumberUtil.isNumberGeographical(phone));
}

@Test
public void givenUSPhoneNumber_whenFormattedToE164_thenReturnsCorrectInternationalFormat() throws NumberParseException {
PhoneNumberUtil phoneNumberUtil = PhoneNumberUtil.getInstance();

PhoneNumber number = phoneNumberUtil.parse("(415) 555-2671", "US");
String e164Format = phoneNumberUtil.format(number, PhoneNumberUtil.PhoneNumberFormat.E164);

assertEquals("+14155552671", e164Format);
}

@Test
public void givenIndianPhoneNumber_whenFormattedToE164_thenReturnsCorrectInternationalFormat() throws NumberParseException {
PhoneNumberUtil phoneNumberUtil = PhoneNumberUtil.getInstance();

PhoneNumber number = phoneNumberUtil.parse("09876543210", "IN");
String e164Format = phoneNumberUtil.format(number, PhoneNumberUtil.PhoneNumberFormat.E164);

assertEquals("+919876543210", e164Format);
}
}