Ajout d'un test pour couvrir le cas limite du commit précédent

feeCalculator/src/main/java/org/example/Visitor.java

@@ -5,7 +5,7 @@ public class Visitor {
     private FeeCalculationStrategy feeCalculationStrategy;
 
     public Visitor (int age) {
-        if (age < 14) {
+        if (age <= 14) {
             feeCalculationStrategy = new FeeCalculationStartegyForChildren();
         } else {
             feeCalculationStrategy = new FeeCalculationStrategyForAdults();

feeCalculator/src/test/java/org/example/FeeCalculatorTest.java

@@ -30,6 +30,18 @@ class FeeCalculatorTest {
         assertThat(actualFee).isEqualTo(50.0);
     }
 
+    @Test
+    public void for_age_exactly_14_should_be_child() {
+        //GIVEN
+        Visitor child = new Visitor(14);
+
+        //WHEN
+        double actualFee = FeeCalculator.calculateFee(child, TicketType.FULL_DAY);
+
+        //THEN
+        assertThat(actualFee).isEqualTo(50.0);
+    }
+
     @Test
     public void for_age_above_14_HALF_DAY_should_calculate_60() {
         //GIVEN