Sheffield | ITP-Jan-26 | Hayriye Saricicek | Sprint 3 | practice tdd

.gitignore

@@ -1,4 +1,4 @@
 node_modules
 .DS_Store
-.vscode
-**/.DS_Store
+.vscode/
+**/.DS_Store

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

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

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

@@ -22,3 +22,56 @@ 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 multiple occurrences of a character", () => {
+  const str = "aaaaa";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(5);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blind";
+  const char = "a";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blood";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(2);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blood";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(2);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "blood";
+  const char = "l";
+  const count = countChar(str, char);
+  expect(count).toEqual(1);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "bbbrf";
+  const char = "b";
+  const count = countChar(str, char);
+  expect(count).toEqual(3);
+});
+
+test("should count multiple occurrences of a character", () => {
+  const str = "ooooa";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(4);
+});
+
+// handling invalid input
+// the tests work assuming that only letters are in the string
+// numbers and special characters are not tested for

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

@@ -1,5 +1,20 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  // Check if input is a number
+  if (typeof num !== "number" || isNaN(num)) {
+    throw new Error("Input must be a valid number");
+  }
+
+  const j = num % 10; // checks what last number is
+  const k = num % 100; // checks what last two numbers are, needed to check for 11
+
+  if (k === 11 || k === 12 || k === 13) {
+    return num + "th";
+  }
+  if (j === 1) return num + "st";
+  if (j === 2) return num + "nd";
+  if (j === 3) return num + "rd";
+
+  return num + "th";
 }
 
 module.exports = getOrdinalNumber;

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

@@ -13,8 +13,40 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // Case 1: Numbers ending with 1 (but not 11)
 // When the number ends with 1, except those ending with 11,
 // Then the function should return a string by appending "st" to the number.
+
 test("should append 'st' for numbers ending with 1, except those ending with 11", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+// Case 2: Numbers ending with 2
+// When the number ends with 2,
+// Then the function should return a string by appending "nd" to the number.
+
+test("should append 'nd' for numbers ending with 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(32)).toEqual("32nd");
+  expect(getOrdinalNumber(252)).toEqual("252nd");
+});
+
+// Case 3: Numbers ending with 3
+// When the number ends with 3,
+// Then the function should return a string by appending "rd" to the number.
+
+test("should append 'rd' for numbers ending with 3", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+  expect(getOrdinalNumber(133)).toEqual("133rd");
+});
+
+// Case 4: The remaining numbers
+// When the number ends with 1, except those ending with 11
+// For all other numbers
+// Then the function should return a string by appending "th" to the number.
+
+test("should append 'th' for remaining numbers", () => {
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(99)).toEqual("99th");
+});

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

@@ -1,5 +1,13 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(str, count) {
+  if (count < 0) {
+    throw new Error("Count must be positive");
+  }
+
+  if (count === 0) {
+    return " ";
+  }
+
+  return str.repeat(count);
 }
 
 module.exports = repeatStr;

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

@@ -21,12 +21,32 @@ test("should repeat the string count times", () => {
 // When the repeatStr function is called with these inputs,
 // Then it should return the original `str` without repetition.
 
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
+
 // 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,
+// When the repeatStr function is called with these inputs
 // Then it should return an empty string.
 
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).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 an error when count is negative", () => {
+  const str = "hello";
+  const count = -3;
+  expect(() => repeatStr(str, count)).toThrow("Count must be positive");
+});