sprint 3 TDD solution

Author: Ofonimeedak

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

@@ -1,5 +1,13 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    } else {
+      return 0;
+    }
+  }
+  return count;
 }
 
 module.exports = countChar;

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

@@ -22,3 +22,6 @@ 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 return '0' if character does not exist", () => {
+  expect(countChar("edak", "s")).toEqual(0);
+});

Sprint-3/2-practice-tdd/get-ordinal-number.js

@@ -1,5 +1,19 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const numStr = num.toString();
+  const numLength = numStr.length;
+  if (numStr[numLength - 2] === "1" && numStr[numLength - 1] === "1") {
+    return num + "th";
+  } else if (numStr[numLength - 1] === "1") {
+    return num + "st";
+  } else if (numStr[numLength - 2] === "1" && numStr[numLength - 1] === "3") {
+    return num + "th";
+  } else if (numStr[numLength - 1] === "3") {
+    return num + "rd";
+  } else if (numStr[numLength - 1] === "2") {
+    return num + "nd";
+  } else {
+    return num + "th";
+  }
 }
 
 module.exports = getOrdinalNumber;

Sprint-3/2-practice-tdd/get-ordinal-number.test.js

@@ -18,3 +18,43 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+//case 2: Numbers ending with 11
+test("should return 'th' for numbers ending with 11", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(111)).toEqual("111th");
+  expect(getOrdinalNumber(211)).toEqual("211th");
+  expect(getOrdinalNumber(1011)).toEqual("1011th");
+});
+
+//case:3 Numbers ending with 3 but not 13
+test("Should return 'rd' for numbers ending with 3", () => {
+  expect(getOrdinalNumber(73)).toEqual("73rd");
+  expect(getOrdinalNumber(93)).toEqual("93rd");
+  expect(getOrdinalNumber(43)).toEqual("43rd");
+  expect(getOrdinalNumber(2003)).toEqual("2003rd");
+});
+
+//case:4 expect Numbers ending with 13 to return th
+test(" should return 'th' for numbers ending with 13", () => {
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(413)).toEqual("413th");
+  expect(getOrdinalNumber(613)).toEqual("613th");
+});
+//case 4: expect number ending with 2 to return nd
+test(" should return 'nd' for numbers ending with 2", () => {
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(42)).toEqual("42nd");
+  expect(getOrdinalNumber(102)).toEqual("102nd");
+});
+
+// case 5: expect number not included in the above case to return th
+test("should return 'th' for numbers ending with 4, 5,6,7,8,9,0", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(5)).toEqual("5th");
+  expect(getOrdinalNumber(6)).toEqual("6th");
+  expect(getOrdinalNumber(7)).toEqual("7th");
+  expect(getOrdinalNumber(8)).toEqual("8th");
+  expect(getOrdinalNumber(9)).toEqual("9th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+});

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

@@ -1,5 +1,11 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(str, count) {
+  if (count >= 1) {
+    return str.repeat(count);
+  } else if (count === 0) {
+    return "";
+  } else {
+    throw new Error("Invalid count");
+  }
 }
 
 module.exports = repeatStr;

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

@@ -20,13 +20,23 @@ test("should repeat the string count times", () => {
 // Given a target string `str` and a `count` equal to 1,
 // When the repeatStr function is called with these inputs,
 // Then it should return the original `str` without repetition.
+test("should return original string without repetition ", () => {
+  expect(repeatStr("edak", 1)).toEqual("edak");
+});
 
 // Case: Handle count of 0:
 // Given a target string `str` and a `count` equal to 0,
 // When the repeatStr function is called with these inputs,
 // Then it should return an empty string.
+test("should return an 'empty string' for count value of 0", () => {
+  expect(repeatStr("edak", 0)).toEqual("");
+});
 
 // Case: Handle negative count:
 // Given a target string `str` and a negative integer `count`,
 // When the repeatStr function is called with these inputs,
 // Then it should throw an error, as negative counts are not valid.
+
+test("should throw and error if count value is negative integer", () => {
+  expect(() => repeatStr("edak", -1)).toThrow("Invalid count");
+});