diff --git a/timefold-solver/src/test/java/com/baeldung/timefoldsolver/ShiftScheduleConstraintProviderTest.java b/timefold-solver/src/test/java/com/baeldung/timefoldsolver/ShiftScheduleConstraintProviderTest.java
index c4741a831b..0832cd7bdd 100644
--- a/timefold-solver/src/test/java/com/baeldung/timefoldsolver/ShiftScheduleConstraintProviderTest.java
+++ b/timefold-solver/src/test/java/com/baeldung/timefoldsolver/ShiftScheduleConstraintProviderTest.java
@@ -16,24 +16,33 @@ class ShiftScheduleConstraintProviderTest {
         ShiftSchedule.class, Shift.class);
 
     @Test
-    void atMostOneShiftPerDay() {
+    void whenTwoShiftsOnOneDay_thenPenalize() {
         Employee ann = new Employee("Ann", null);
         constraintVerifier.verifyThat(ShiftScheduleConstraintProvider::atMostOneShiftPerDay)
             .given(ann, new Shift(MONDAY.atTime(6, 0), MONDAY.atTime(14, 0), null, ann), new Shift(MONDAY.atTime(14, 0), MONDAY.atTime(22, 0), null, ann))
             // Penalizes by 2 because both {shiftA, shiftB} and {shiftB, shiftA} match.
             // To avoid that, use forEachUniquePair() in the constraint instead.
             .penalizesBy(2);
+    }
+    @Test
+    void whenTwoShiftsOnDifferentDays_thenDoNotPenalize() {
+        Employee ann = new Employee("Ann", null);
         constraintVerifier.verifyThat(ShiftScheduleConstraintProvider::atMostOneShiftPerDay)
             .given(ann, new Shift(MONDAY.atTime(6, 0), MONDAY.atTime(14, 0), null, ann), new Shift(TUESDAY.atTime(14, 0), TUESDAY.atTime(22, 0), null, ann))
             .penalizesBy(0);
     }
 
     @Test
-    void requiredSkill() {
+    void whenEmployeeLacksRequiredSkill_thenPenalize() {
         Employee ann = new Employee("Ann", Set.of("Waiter"));
         constraintVerifier.verifyThat(ShiftScheduleConstraintProvider::requiredSkill)
             .given(ann, new Shift(MONDAY.atTime(6, 0), MONDAY.atTime(14, 0), "Cook", ann))
             .penalizesBy(1);
+    }
+
+    @Test
+    void whenEmployeeHasRequiredSkill_thenDoNotPenalize() {
+        Employee ann = new Employee("Ann", Set.of("Waiter"));
         constraintVerifier.verifyThat(ShiftScheduleConstraintProvider::requiredSkill)
             .given(ann, new Shift(MONDAY.atTime(6, 0), MONDAY.atTime(14, 0), "Waiter", ann))
             .penalizesBy(0);