Merge pull request #1201 from sjwarner-bp/book-store-update

book-store: update test suite to 1.2.0

exercises/book-store/.meta/version

+1.2.0

exercises/book-store/src/test/java/BookStoreTest.java

   @Test
   public void onlyASingleBook() {
     List<Integer> books = Collections.singletonList(1);
-    assertEquals(8, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+    assertEquals(8.00, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
   @Ignore("Remove to run test")
   @Test
   public void twoOfSameBook() {
-    List<Integer> books = Arrays.asList(1, 1);
-    assertEquals(16, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+    List<Integer> books = Arrays.asList(2, 2);
+    assertEquals(16.00, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
   @Ignore("Remove to run test")
   @Test
   public void emptyBasket() {
     List<Integer> books = Collections.emptyList();
-    assertEquals(0, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+    assertEquals(0.00, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
   @Ignore("Remove to run test")
   @Test
   public void threeDifferentBooks() {
     List<Integer> books = Arrays.asList(1, 2, 3);
-    assertEquals(21.6, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+    assertEquals(21.60, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
   @Ignore("Remove to run test")
   @Test
   public void fourDifferentBooks() {
     List<Integer> books = Arrays.asList(1, 2, 3, 4);
-    assertEquals(25.6, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+    assertEquals(25.60, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
   @Ignore("Remove to run test")
   @Test
   public void fiveDifferentBooks() {
     List<Integer> books = Arrays.asList(1, 2, 3, 4, 5);
-    assertEquals(30, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+    assertEquals(30.00, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
   @Ignore("Remove to run test")
   @Test
   public void groupOfFourPlusGroupOfTwoIsCheaperThanTwoGroupsOfThree() {
     List<Integer> books = Arrays.asList(1, 1, 2, 2, 3, 4);
-    assertEquals(40.8, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+    assertEquals(40.80, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
   @Ignore("Remove to run test")
     assertEquals(75.20, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
   }
 
+  @Ignore("Remove to run test")
+  @Test
+  public void fourGroupsOfFourAreCheaperThanTwoGroupsEachOfFiveAndThree() {
+    List<Integer> books = Arrays.asList(1, 1, 2, 2, 3, 3, 4, 5, 1, 1, 2, 2, 3, 3, 4, 5);
+    assertEquals(102.4, bookStore.calculateBasketCost(books), EQUALITY_TOLERANCE);
+  }
+
 }