From e9d3b7dac0b81a38dfb65dad75b6e8c3f6f2a76f Mon Sep 17 00:00:00 2001
From: Thomas <>
Date: Fri, 25 Jun 2021 15:46:48 +0200
Subject: add validator to check if age is 14 or older

---
 src/main/java/at/gv/util/ValidationUtils.java      | 19 ++++++++++++
 .../java/at/gv/util/test/ValitationUtilsTest.java  | 36 ++++++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 src/test/java/at/gv/util/test/ValitationUtilsTest.java

diff --git a/src/main/java/at/gv/util/ValidationUtils.java b/src/main/java/at/gv/util/ValidationUtils.java
index cbc7207..108fe27 100644
--- a/src/main/java/at/gv/util/ValidationUtils.java
+++ b/src/main/java/at/gv/util/ValidationUtils.java
@@ -2,11 +2,16 @@ package at.gv.util;
 
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.time.LocalDate;
+import java.time.Period;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
 import java.util.regex.Pattern;
 
 public class ValidationUtils {
 
 	private static final String DATEFORMAT = "dd.MM.yyyy";
+	private static final int REPRESENTATION_MIN_AGE = 14;
 	
 	public static boolean isDateFormat(String dateString) {
 		
@@ -57,5 +62,19 @@ public class ValidationUtils {
 		
 		return Pattern.compile("[0-9]{4}").matcher(postcode).matches();
 	}
+
+	public static boolean isOverThirteen(String representativeDateOfBirth) {
+		try {			
+			DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DATEFORMAT);
+	        LocalDate birthdate= LocalDate.parse(representativeDateOfBirth, formatter);			 
+			Period p = Period.between(birthdate, LocalDate.now());			
+			return p.getYears() >= REPRESENTATION_MIN_AGE;
+				
+		} catch (DateTimeParseException e) {
+		    return false;
+		    
+	    }
+
+	}
 	
 }
diff --git a/src/test/java/at/gv/util/test/ValitationUtilsTest.java b/src/test/java/at/gv/util/test/ValitationUtilsTest.java
new file mode 100644
index 0000000..e4e5b3f
--- /dev/null
+++ b/src/test/java/at/gv/util/test/ValitationUtilsTest.java
@@ -0,0 +1,36 @@
+package at.gv.util.test;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.apache.commons.lang.RandomStringUtils;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.BlockJUnit4ClassRunner;
+
+import at.gv.util.ValidationUtils;
+
+@RunWith(BlockJUnit4ClassRunner.class)
+public class ValitationUtilsTest {
+
+	@Test
+	public void dateOfBirthFormat() {
+		assertFalse("wrong format not detected", ValidationUtils.isDateFormat("19-06-2002"));
+		assertFalse("wrong format not detected", ValidationUtils.isOverThirteen(RandomStringUtils.randomAlphanumeric(10)));
+				
+		assertTrue("detected", ValidationUtils.isDateFormat("19.06.2002"));
+		
+	}
+	
+	@Test
+	public void ageVerification() {				
+		assertTrue("not over 14", ValidationUtils.isOverThirteen("01.01.1985"));
+		assertTrue("not over 14", ValidationUtils.isOverThirteen("17.06.2007"));
+		assertTrue("not over 14", ValidationUtils.isOverThirteen("18.06.2007"));			
+		assertFalse("not over 14", ValidationUtils.isOverThirteen("19.06.2015"));
+		
+		assertFalse("not over 14", ValidationUtils.isOverThirteen("19-06-2002"));
+		assertFalse("not over 14", ValidationUtils.isOverThirteen(RandomStringUtils.randomAlphanumeric(10)));
+		
+	}
+} 
-- 
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