Completed sumAll exercise

05_sumAll/sumAll.js

@@ -1,5 +1,27 @@
-const sumAll = function() {
+const sumAll = function(x, y) {
+    if (x < 0 || y < 0) {
+        return "ERROR"
+    } else if (typeof x != "number" || typeof y != "number") {
+        return "ERROR"
+    }
     
+    let diff = x - y
+    if (diff < 0) {
+        diff *= -1
+    }
+    
+    let sum = 0
+    let min = x
+
+    if (x > y) {
+        min = y
+    }
+
+    for (let i = 0; i <= diff; i++) {
+        sum += min
+        min++
+    }
+    return sum
 };
 
 // Do not edit below this line

05_sumAll/sumAll.spec.js

@@ -4,19 +4,19 @@ describe('sumAll', () => {
   test('sums numbers within the range', () => {
     expect(sumAll(1, 4)).toEqual(10);
   });
-  test.skip('works with large numbers', () => {
+  test('works with large numbers', () => {
     expect(sumAll(1, 4000)).toEqual(8002000);
   });
-  test.skip('works with larger number first', () => {
+  test('works with larger number first', () => {
     expect(sumAll(123, 1)).toEqual(7626);
   });
-  test.skip('returns ERROR with negative numbers', () => {
+  test('returns ERROR with negative numbers', () => {
     expect(sumAll(-10, 4)).toEqual('ERROR');
   });
-  test.skip('returns ERROR with non-number parameters', () => {
+  test('returns ERROR with non-number parameters', () => {
     expect(sumAll(10, "90")).toEqual('ERROR');
   });
-  test.skip('returns ERROR with non-number parameters', () => {
+  test('returns ERROR with non-number parameters', () => {
     expect(sumAll(10, [90, 1])).toEqual('ERROR');
   });
 });