London | 25-ITP-Sep | Payman Issa Baiglu | sprint 3 | 2-practice-tdd

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

@@ -1,5 +1,12 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
-}
+  let count = 0;
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+  return count;
+}    
+console.log(countChar("hello world!", "l"));
 
 module.exports = countChar;

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

@@ -22,3 +22,10 @@ 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 +1,13 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const suffixes = ["th", "st", "nd", "rd"];
+  const v = num % 100;
+  console.log(v);
+  if (v >= 11 && v <= 13) {
+    return num + "th";
+  }
+  const suffix = suffixes[(v % 10)] || "th";
+  return num + suffix;
 }
+console.log(getOrdinalNumber(52)); 
 
 module.exports = getOrdinalNumber;

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

@@ -11,3 +11,17 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should return '1st' for 1", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
 });
+
+test("should return '2nd' for 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+});
+
+test("should return '3rd' for 3", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+});   
+test("should return '24th' for 24", () => {
+  expect(getOrdinalNumber(24)).toEqual("24th");
+});   
+test("should return '11th' for 11", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+});

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

@@ -1,5 +1,16 @@
-function repeat() {
-  return "hellohellohello";
+function repeat(str , count) {
+  if (count < 0) {
+    return "Count must be a non-negative integer";
+  }
+  if (count === 0) {
+    return "";
+  } 
+  for (let i = 0; i < count; i++) { 
+    return str.repeat(count);
+  } 
 }
+  console.log(repeat("hello", -2));
+
+
 
 module.exports = repeat;

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

@@ -1,9 +1,5 @@
 // Implement a function repeat
 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:
-
 // case: repeat String:
 // Given a target string str and a positive integer count,
 // When the repeat function is called with these inputs,
@@ -20,13 +16,29 @@ 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 = "world";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("world");
+});
 // 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 = "test";
+  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 return a message for negative count", () => {
+  const str = "error";
+  const count = -2;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("Count must be a non-negative integer");
+});