Glasgow | 25-ITP-SEP | Alaa Tagi | Sprint 3 | Coursework/sprint 3 practice tdd

Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js

@@ -60,4 +60,4 @@ const obtuse = getAngleType(120);
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
-// ====> write your test here, and then add a line to pass the test in the function above
+// ====> write your test here, and then add a line to pass the test in the function above

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

@@ -1,5 +1,17 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  if (
+    typeof stringOfCharacters !== "string" ||
+    typeof findCharacter !== "string" ||
+    findCharacter.length !== 1
+  ) {
+    return 0;
+  }
+
+  if (stringOfCharacters.length === 0) {
+    return 0;
+  }
+
+  return stringOfCharacters.split(findCharacter).length - 1;
 }
 
 module.exports = countChar;

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

@@ -2,7 +2,8 @@
 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:  correctly count the occurrences of char in str.
+
 
 // Scenario: Multiple Occurrences
 // Given the input string str,
@@ -17,8 +18,89 @@ test("should count multiple occurrences of a character", () => {
   expect(count).toEqual(5);
 });
 
+
 // Scenario: No Occurrences
 // Given the input string str,
 // 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 for no occurrences", () => {
+  const str = "hello";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+
+// Scenario: Multiple occurrences
+test("should count multiple occurrences of a character", () => {
+  const str = "aaaaa";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(5);
+});
+
+// Scenario: No occurrences
+test("should return 0 for no occurrences", () => {
+  const str = "hello";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: Empty string
+test("should return 0 when input string is empty", () => {
+  const str = "";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: Empty character
+test("should return 0 when character input is empty", () => {
+  const str = "hello";
+  const char = "";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: Character longer than 1
+test("should return 0 when character input is longer than one character", () => {
+  const str = "hello";
+  const char = "ll";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: char string longer than str string
+test("should return 0 when char is longer than the input string", () => {
+  const str = "a";
+  const char = "abc";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: Non-string inputs
+test("should return 0 when inputs are not strings", () => {
+  expect(countChar(12345, "1")).toEqual(0);
+  expect(countChar("12345", 1)).toEqual(0);
+  expect(countChar(null, "a")).toEqual(0);
+  expect(countChar("hello", undefined)).toEqual(0);
+});
+
+// Scenario: Case sensitivity
+test("should count only exact case matches", () => {
+  const str = "AaAaA";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(2);
+});
+
+// Scenario: Spaces and special characters
+test("should correctly count spaces and symbols", () => {
+  const str = "a b c d e ! !";
+  const char = " ";
+  const count = countChar(str, char);
+  expect(count).toEqual(6);
+});

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

@@ -1,5 +1,34 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  if (typeof num !== "number" || isNaN(num)) {
+    return "Invalid input";
+  }
+  const sign = num < 0 ? "-" : "";
+  num = Math.abs(num);
+
+  // Handle decimals
+  if (!Number.isInteger(num)) {
+    return sign + num + "th";
+  }
+
+  const lastTwo = num % 100;
+  const lastOne = num % 10;
+
+  // Handle special cases 11th, 12th, 13th
+  if (lastTwo >= 11 && lastTwo <= 13) {
+    return sign + num + "th";
+  }
+
+  // Normal ordinal rules
+  switch (lastOne) {
+    case 1:
+      return sign + num + "st";
+    case 2:
+      return sign + num + "nd";
+    case 3:
+      return sign + num + "rd";
+    default:
+      return sign + num + "th";
+  }
 }
 
-module.exports = getOrdinalNumber;
+module.exports = getOrdinalNumber;

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

@@ -11,3 +11,87 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should return '1st' for 1", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
 });
+
+/// Case 2: Identify the ordinal number for 2
+// When the number is 2,
+// Then the function should return "2nd"
+test("should return '2nd' for 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+});
+
+// Case 3: Identify the ordinal number for 3
+// When the number is 3,
+// Then the function should return "3rd"
+test("should return '3rd' for 3", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+});
+
+// Case 4: Identify the ordinal number for 4
+// When the number is 4,
+// Then the function should return "4th"
+test("should return '4th' for 4", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+});
+
+// Case 5: Identify the ordinal number for 11
+// When the number is 11,
+// Then the function should return "11th"
+test("should return '11th' for 11", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+});
+
+// Case 6: Identify the ordinal number for 22
+// When the number is 22,
+// Then the function should return "22nd"
+test("should return '22nd' for 22", () => {
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+});
+
+// Case 7: Identify the ordinal number for 33
+// When the number is 33,
+// Then the function should return "33rd"
+test("should return '33rd' for 33", () => {
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+});
+
+// Case 8: Undefined input
+// When the input is undefined,
+// Then the function should return "Invalid input"
+test("should handle undefined input gracefully", () => {
+  expect(getOrdinalNumber(undefined)).toEqual("Invalid input");
+});
+
+// Case 9: Null input
+// When the input is null,
+// Then the function should return "Invalid input"
+test("should handle null input gracefully", () => {
+  expect(getOrdinalNumber(null)).toEqual("Invalid input");
+});
+
+// Case 10: Boolean input
+// When the input is a boolean value,
+// Then the function should return "Invalid input"
+test("should handle boolean input gracefully", () => {
+  expect(getOrdinalNumber(true)).toEqual("Invalid input");
+});
+
+// Case 11: Non-numeric string input
+// When the input is a non-numeric string,
+// Then the function should return "Invalid input"
+test("should handle non-numeric string input gracefully", () => {
+  expect(getOrdinalNumber("hello")).toEqual("Invalid input");
+});
+
+// Case 12: Negative number
+// When the input is a negative number,
+// Then the function should return the ordinal form with a negative sign
+test("should return '-1st' for -1", () => {
+  expect(getOrdinalNumber(-1)).toEqual("-1st");
+});
+
+// Case 13: Floating number
+// When the input is a floating number,
+// Then the function should return the ordinal with decimal intact
+test("should handle decimal numbers", () => {
+  expect(getOrdinalNumber(21.5)).toEqual("21.5th");
+});

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

@@ -1,5 +1,20 @@
-function repeat() {
-  return "hellohellohello";
+function repeat(str, count) {
+  if (str === undefined || count === undefined){
+    throw new Error ("argument must be defined")
+  }
+  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;
+
+
+

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,
@@ -11,22 +11,80 @@ const repeat = require("./repeat");
 
 test("should repeat the string count times", () => {
   const str = "hello";
-  const count = 3;
+  const count = 4;
   const repeatedStr = repeat(str, count);
-  expect(repeatedStr).toEqual("hellohellohello");
+  expect(repeatedStr).toEqual("hellohellohellohello");
 });
 
-// case: handle Count of 1:
+
+// case: Handle Count of 1 :
 // 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.
+// Then it should return the original str without 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.
+// case: Handle Count of 0 :
+// When count is 0, it should return an empty string.
+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.
+// case: Negative Count :
+// When count is negative, it should throw an error.
+test("should throw an error when count is negative", () => {
+  const str = "hello";
+  const count = -2;
+  expect(() => repeat(str, count)).toThrow("Count must be a non-negative integer");
+});
+
+
+// case: Non-string input for str :
+// When str is not a string (e.g., number), it should still repeat it as a string.
+test("should convert non-string input to string before repeating", () => {
+  const str = 123;
+  const count = 2;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("123123");
+});
+
+// case: Non-integer count :
+// When count is a non-integer (e.g., 2.5), it should repeat only the integer part.
+test("should handle non-integer count by truncating it", () => {
+  const str = "hi";
+  const count = 2.5;
+  const repeatedStr = repeat(str, Math.floor(count));
+  expect(repeatedStr).toEqual("hihi");
+});
+
+// case: Empty string input :
+// When str is empty, the result should always be empty, regardless of count.
+test("should return an empty string when str is empty", () => {
+  const str = "";
+  const count = 5;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("");
+});
+
+// case: Undefined or missing arguments :
+// When arguments are missing or undefined, it should throw an error.
+test("should handle undefined inputs gracefully", () => {
+  expect(() => repeat(undefined, 3)).toThrow("argument must be defined");
+
+});
+
+// case: Boolean inputs :
+// When str or count are booleans, it should convert str to string and handle count normally.
+test("should handle boolean values as inputs", () => {
+  const str = true;
+  const count = 2;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("truetrue");
+});