fix(heap): this is undefined

src/data-structures/heap/MaxHeapAdhoc.js

@@ -7,7 +7,7 @@
 class MaxHeapAdhoc {
   constructor(heap = []) {
     this.heap = [];
-    heap.forEach(this.add);
+    heap.forEach((value) => this.add(value));
   }
 
   add(num) {

src/data-structures/heap/MinHeapAdhoc.js

@@ -7,7 +7,7 @@
 class MinHeapAdhoc {
   constructor(heap = []) {
     this.heap = [];
-    heap.forEach(this.add);
+    heap.forEach((value) => this.add(value));
   }
 
   add(num) {

src/data-structures/heap/__test__/MaxHeapAdhoc.test.js

@@ -1,16 +1,16 @@
-import MaxHeap from '../MaxHeapAdhoc';
+import MaxHeapAdhoc from '../MaxHeapAdhoc';
 
 describe('MaxHeapAdhoc', () => {
   it('should create an empty max heap', () => {
-    const maxHeap = new MaxHeap();
+    const maxHeap = new MaxHeapAdhoc();
 
     expect(maxHeap).toBeDefined();
     expect(maxHeap.peek()).toBe(undefined);
     expect(maxHeap.isEmpty()).toBe(true);
   });
 
   it('should add items to the heap and heapify it up', () => {
-    const maxHeap = new MaxHeap();
+    const maxHeap = new MaxHeapAdhoc();
 
     maxHeap.add(5);
     expect(maxHeap.isEmpty()).toBe(false);
@@ -44,7 +44,7 @@ describe('MaxHeapAdhoc', () => {
   });
 
   it('should poll items from the heap and heapify it down', () => {
-    const maxHeap = new MaxHeap();
+    const maxHeap = new MaxHeapAdhoc();
 
     maxHeap.add(5);
     maxHeap.add(3);
@@ -74,7 +74,7 @@ describe('MaxHeapAdhoc', () => {
   });
 
   it('should heapify down through the right branch as well', () => {
-    const maxHeap = new MaxHeap();
+    const maxHeap = new MaxHeapAdhoc();
 
     maxHeap.add(3);
     maxHeap.add(12);
@@ -88,4 +88,12 @@ describe('MaxHeapAdhoc', () => {
     expect(maxHeap.poll()).toBe(12);
     expect(maxHeap.toString()).toBe('11,3,10');
   });
+
+  it('should create the max heap filled', () => {
+    const maxHeap = new MaxHeapAdhoc([3, 12, 10]);
+
+    expect(maxHeap).toBeDefined();
+    expect(maxHeap.peek()).toBe(12);
+    expect(maxHeap.isEmpty()).toBe(false);
+  });
 });

src/data-structures/heap/__test__/MinHeapAdhoc.test.js

@@ -88,4 +88,12 @@ describe('MinHeapAdhoc', () => {
     expect(minHeap.poll()).toBe(3);
     expect(minHeap.toString()).toBe('10,11,12');
   });
+
+  it('should create the min heap filled', () => {
+    const minHeap = new MinHeapAdhoc([3, 12, 10]);
+
+    expect(minHeap).toBeDefined();
+    expect(minHeap.peek()).toBe(3);
+    expect(minHeap.isEmpty()).toBe(false);
+  });
 });