--fix: code coverage 100%

Author: TheSTL

src/_DataStructures_/Heaps/MaxHeap/MaxHeap.test.js

@@ -38,8 +38,11 @@ describe('MaxHeap', () => {
   });
 
   it('Should return `null` when heap is empty', () => {
-    [1, 34].forEach(el => mh.add(el));
-    expect(mh.getMax()).toEqual(34);
+    [1, 34, 43, 54, 123].forEach(el => mh.add(el));
+    mh.remove();
+    mh.remove();
+    mh.remove();
+    mh.remove();
     mh.remove();
     mh.remove();
     expect(mh.getMax()).toEqual(null);

src/_DataStructures_/Heaps/MinHeap/MinHeap.test.js

@@ -38,10 +38,14 @@ describe('MinHeap', () => {
   });
 
   it('Should return `null` when heap is empty', () => {
-    [1, 34].forEach(el => mh.add(el));
+    [1, 34, 43, 54, 123].forEach(el => mh.add(el));
     expect(mh.getMin()).toEqual(1);
     mh.remove();
     mh.remove();
+    mh.remove();
+    mh.remove();
+    mh.remove();
+    mh.remove();
     expect(mh.getMin()).toEqual(null);
   });