Glasgow | 25-ITP-Sep | Fares Bakhet | Sprint 3 | coursework/sprint-3-practice-tdd

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

@@ -1,5 +1,12 @@
-function countChar(stringOfCharacters, findCharacter) {
-  return 5
+function countChar(str, char) {
+  return str.split(char).length - 1;
 }
 
 module.exports = countChar;
+
+console.log(
+  countChar(
+    "The split() method of String values takes a pattern and divides this string into an ordered list of substrings by searching for the pattern, puts these substrings into an array, and returns the array.",
+    "a"
+  )
+);

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

@@ -2,7 +2,7 @@
 const countChar = require("./count");
 // Given a string str and a single character char to search for,
 // When the countChar function is called with these inputs,
-// Then it should:
+// Then it should: Return how many time the char occurs in the str.
 
 // Scenario: Multiple Occurrences
 // Given the input string str,
@@ -22,3 +22,9 @@ test("should count multiple occurrences of a character", () => {
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+test("should return 0 when character does not exist in the string", () => {
+  const str = "hello world";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

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

@@ -1,5 +1,43 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  num = num.toString();
+  if (
+    num.slice(-2) === "11" ||
+    num.slice(-2) === "12" ||
+    num.slice(-2) === "13"
+  ) {
+    return num + "th";
+  }
+  if (num.slice(-1) === "1") {
+    return num + "st";
+  }
+  if (num.slice(-1) === "2") {
+    return num + "nd";
+  }
+  if (num.slice(-1) === "3") {
+    return num + "rd";
+  }
+  return num + "th";
 }
 
 module.exports = getOrdinalNumber;
+
+console.log(getOrdinalNumber(1));
+console.log(getOrdinalNumber(2));
+console.log(getOrdinalNumber(3));
+console.log(getOrdinalNumber(4));
+console.log(getOrdinalNumber(5));
+console.log(getOrdinalNumber(6));
+console.log(getOrdinalNumber(7));
+console.log(getOrdinalNumber(8));
+console.log(getOrdinalNumber(9));
+console.log(getOrdinalNumber(10));
+console.log(getOrdinalNumber(11));
+console.log(getOrdinalNumber(12));
+console.log(getOrdinalNumber(13));
+console.log(getOrdinalNumber(21));
+console.log(getOrdinalNumber(22));
+console.log(getOrdinalNumber(23));
+console.log(getOrdinalNumber(101));
+console.log(getOrdinalNumber(111));
+console.log(getOrdinalNumber(112));
+console.log(getOrdinalNumber(113));

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

@@ -4,10 +4,27 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // continue testing and implementing getOrdinalNumber for additional cases
 // Write your tests using Jest - remember to run your tests often for continual feedback
 
-// Case 1: Identify the ordinal number for 1
-// When the number is 1,
-// Then the function should return "1st"
-
-test("should return '1st' for 1", () => {
+test("append 'st' to numbers ending in 1,except those ending in 11", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(101)).toEqual("101st");
+});
+
+test("append 'nd' to numbers ending in 2, except those ending in 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(132)).toEqual("132nd");
+});
+
+test("append 'rd' to numbers ending in 3, except those ending in 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(133)).toEqual("133rd");
+});
+
+test("should return 'th' for numbers where the last digit is not 1, 2, or 3, excluding special cases 11–13", () => {
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(134)).toEqual("134th");
 });

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

@@ -1,5 +1,14 @@
-function repeat() {
-  return "hellohellohello";
+function repeat(str, count) {
+  if (count < 0) {
+    throw new Error("Count must be a non-negative integer");
+  }
+  let result = "";
+  for (let i = 0; i < count; i++) {
+    result += str;
+  }
+  return result;
 }
 
 module.exports = repeat;
+
+console.log(repeat("hello", 3));

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

@@ -2,7 +2,7 @@
 const repeat = require("./repeat");
 // Given a target string str and a positive integer count,
 // When the repeat function is called with these inputs,
-// Then it should:
+// Then it should: repeat the str count times and return a new string containing the repeated str values.
 
 // case: repeat String:
 // Given a target string str and a positive integer count,
@@ -20,13 +20,32 @@ test("should repeat the string count times", () => {
 // Given a target string str and a count equal to 1,
 // When the repeat function is called with these inputs,
 // Then it should return the original str without repetition, ensuring that a count of 1 results in no repetition.
+test("should return the original string when count is 1", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
 
 // case: Handle Count of 0:
 // Given a target string str and a count equal to 0,
 // When the repeat function is called with these inputs,
 // Then it should return an empty string, ensuring that a count of 0 results in an empty output.
+test("should return an empty string when count is 0", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("");
+});
 
 // case: Negative Count:
 // Given a target string str and a negative integer count,
 // When the repeat function is called with these inputs,
 // Then it should throw an error or return an appropriate error message, as negative counts are not valid.
+test("should throw an error when count is negative", () => {
+  const str = "hello";
+  const count = -1;
+  expect(() => repeat(str, count)).toThrow(
+    "Count must be a non-negative integer"
+  );
+});