count tests

Author: RaihanSharif

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

@@ -1,5 +1,11 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let total = 0;
+  for (const char of stringOfCharacters) {
+    if (char === findCharacter) {
+      total += 1;
+    }
+  }
+  return total;
 }
 
 module.exports = countChar;

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

@@ -22,3 +22,21 @@ test("should count multiple occurrences of a character", () => {
 // And a character `char` that does not exist within `str`.
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of `char` were found.
+test("should count zero occurrences of a character", () => {
+  const str = "aaaaa";
+  const char = "b";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: Non-consecutive occurrances
+// Given the input string `str`,
+// And a character `char` that appears in more than one block within `str`.
+// When the function is called with these inputs,
+// Then it should return the number of total occurrances.
+test("should count non-contiguous occurrences of a character", () => {
+  const str = "aaaaabba";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(6);
+});