ensure the count is an integer

Author: TzeMingHo

Sprint-3/2-practice-tdd/repeat.js

@@ -2,11 +2,11 @@ function repeat(str, count) {
   if (typeof str !== "string" && typeof str !== "number") {
     throw new Error("Input should be a string");
   }
-  if (Number(count) < 0) {
-    throw new Error("Count should be a positive number");
+  if (Number(count) < 0 && Number.isInteger(Number(count))) {
+    throw new Error("Count should be a positive integer number");
   }
   if (typeof count !== "number" && typeof count !== "string") {
-    throw new Error("Count should be a number");
+    throw new Error("Count should be a positive integer number");
   }
   return String(str).repeat(Number(count));
 }

Sprint-3/2-practice-tdd/repeat.test.js

@@ -45,7 +45,9 @@ test("should return an empty string when count is 0", () => {
 test("should throw an error when count is negative", () => {
   const str = "hello";
   const count = -2;
-  expect(() => repeat(str, count)).toThrow("Count should be a positive number");
+  expect(() => repeat(str, count)).toThrow(
+    "Count should be a positive integer number"
+  );
 });
 
 // case: str is not a string:
@@ -106,5 +108,7 @@ test("should throw an error when str is invalid type", () => {
 test("should throw an error when count is an array", () => {
   const str = "hello";
   const count = [2];
-  expect(() => repeat(str, count)).toThrow("Count should be a number");
+  expect(() => repeat(str, count)).toThrow(
+    "Count should be a positive integer number"
+  );
 });