Add new test "lessthan30" in candy kata

candy-kata-solutions/src/test/java/org/eclipse/collections/candykata/CandyKataSolutionsTest.java

@@ -57,6 +57,20 @@ public void commonInTop10()
         Assertions.assertEquals(expectedSet, commonInTop10);
     }
 
+    @Test
+    @Tag("SOLUTION")
+    public void lessThan30()
+    {
+        MutableList<Bag<Candy>> bagsOfCandy = this.collectBagsOfCandy();
+
+        Bag<Candy> bigBagOfCandy = null;
+
+        String stringOfItemToCount = null;
+
+        var expected = "{WHOPPERS=28, NERDS=28, HERSHEYS_KISSES=24, TWIX=26, SWEDISH_FISH=26}";
+        Assertions.assertEquals(null, stringOfItemToCount);
+    }
+
     private MutableList<Bag<Candy>> collectBagsOfCandy()
     {
         return SchoolGroup.all().collect(SchoolGroup::trickOrTreat).toList();

candy-kata/src/test/java/org/eclipse/collections/candykata/CandyKataTest.java

@@ -61,6 +61,26 @@ public void commonInTop10()
         Assertions.assertEquals(expectedSet, commonInTop10);
     }
 
+    @Test
+    @Tag("KATA")
+    public void lessThan30()
+    {
+        MutableList<Bag<Candy>> bagsOfCandy = this.collectBagsOfCandy();
+
+        // Hint: Flatten the Bags of Candy into a single Bag
+        Bag<Candy> bigBagOfCandy = null;
+
+        // Find candies that are less than 30 in number in the big bag of candy and
+        // convert them to a string with its item count like so: "{WHOPPERS=28}
+        // Hint: use Bag#toStringOfItemToCount()
+        // Replace null with expected value in the solution
+
+        String stringOfItemToCount = bigBagOfCandy.selectByOccurrences(i -> i < 30).toStringOfItemToCount();
+
+        var expected = "{WHOPPERS=28, NERDS=28, HERSHEYS_KISSES=24, TWIX=26, SWEDISH_FISH=26}";
+        Assertions.assertEquals(expected, stringOfItemToCount);
+    }
+
     private MutableList<Bag<Candy>> collectBagsOfCandy()
     {
         return SchoolGroup.all().collect(SchoolGroup::trickOrTreat).toList();