London | 26-ITP-May | Dagim Daniel | Sprint 3 | Practice-tdd

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

@@ -1,5 +1,11 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+  return count;
 }
 
 module.exports = countChar;

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

@@ -17,7 +17,54 @@ test("should count multiple occurrences of a character", () => {
   expect(count).toEqual(5);
 });
 
+test("should count multiple occurrences of a character", () => {
+  const str = "Code your Future";
+  const char = "u";
+  const count = countChar(str, char);
+  expect(count).toEqual(3);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "Introduction to Programming";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(4);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "Introduction to Javascript";
+  const char = "i";
+  const count = countChar(str, char);
+  expect(count).toEqual(2);
+});
 // Scenario: No Occurrences
+test("should return 0 when the character does not occur in the string", () => {
+  const str = "No occurrences here";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+// for empty string scenario.
+test("should return 0 when the input string is empty", () => {
+  const str = "";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+//Scenario: for empty find character.
+test("should return 0 when the find character is empty", () => {
+  const str = "empty find character";
+  const char = "";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+// Scenario: counting empty spaces in a string.
+test("should return the count of empty spaces in a string", () => {
+  const str = "The quick brown fox jumps over the lazy dog";
+  const char = " ";
+  const count = countChar(str, char);
+  expect(count).toEqual(8);
+});
 // Given the input string `str`,
 // And a character `char` that does not exist within `str`.
 // When the function is called with these inputs,

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

@@ -1,5 +1,8 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const s = ["th", "st", "nd", "rd"];
+    const lastDigits = num % 100;
+    // Uses the index 1, 2, or 3 for st/nd/rd, defaults to 0 (th)
+    return num + (s[(lastDigits - 20) % 10] || s[lastDigits] || s[0]);
 }
 
 module.exports = getOrdinalNumber;

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

@@ -18,3 +18,27 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+test("should append 'nd' for numbers ending with 2, except those ending with 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(132)).toEqual("132nd");
+});
+
+test("should append 'rd' for numbers ending with 3, except those ending with 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(133)).toEqual("133rd");
+});
+
+test("should append 'th' for numbers ending with 4-9, 0, and teens (11-13)", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(5)).toEqual("5th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(70)).toEqual("70th");
+  expect(getOrdinalNumber(40)).toEqual("40th");
+});
+

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

@@ -1,7 +1,8 @@
-function repeatStr() {
-  // Your implementation of this function must *not* call String.prototype.repeat (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat).
-  // The goal is to re-implement that function, not to use it.
-  return "hellohellohello";
+function repeatStr(str, count) {
+   let result = "";
+  for (let i = 0; i < count; i++) {
+    result += str;
+  }
+  return result;
 }
-
 module.exports = repeatStr;

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

@@ -9,14 +9,34 @@ const repeatStr = require("./repeat-str");
 // When the repeatStr function is called with these inputs,
 // Then it should return a string that contains the original `str` repeated `count` times.
 
-test("should repeat the string count times", () => {
+test("should repeat the string with no spaces 3 times when count is 3", () => {
   const str = "hello";
   const count = 3;
   const repeatedStr = repeatStr(str, count);
   expect(repeatedStr).toEqual("hellohellohello");
 });
 
-// Case: handle count of 1:
+test("should repeat the string with no spaces 3 times when count is 3", () => {
+  const str = "CYF";
+  const count = 3;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("CYFCYFCYF");
+});
+
+test("should display the string with spaces one times where count is 1", () => {
+  const str = "Code Your Future";
+  const count = 1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("Code Your Future");
+});
+
+test("should return empty string when count  is 0 times", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("");
+});
+
 // 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.