Glasgow | Jan-26 | Elisabeth Matulian | Sprint 3 | Coursework practice tdd

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

@@ -1,5 +1,10 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+  for (char of stringOfCharacters) {
+    if (char === findCharacter) {
+      count = count + 1;
+    }}
+  return count;
 }
 
 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 `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 0 when character is not found", () => {
+  const str = "qwerty";
+  const char = "k";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+})

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

@@ -1,5 +1,19 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  let last2digit = num % 100
+  let lastDigit = num % 10
+  if (last2digit === 11 || last2digit === 12 || last2digit === 13) { 
+    return `${num}th`
+  }
+  else if (lastDigit === 1) {
+    return `${num}st`
+  }
+  else if (lastDigit === 2) {
+    return `${num}nd`
+  }
+  else if (lastDigit === 3) {
+    return `${num}rd`
+  }
+  else return `${num}th`
 }
 
 module.exports = getOrdinalNumber;

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

@@ -17,4 +17,32 @@ 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");
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(111)).toEqual("111th");
 });
+
+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");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(112)).toEqual("112th");
+});
+
+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");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(113)).toEqual("113th");
+});
+
+test("should append 'th' for all other numbers", () => {
+  expect(getOrdinalNumber(0)).toEqual("0th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(14)).toEqual("14th");
+  expect(getOrdinalNumber(19)).toEqual("19th");
+  expect(getOrdinalNumber(99)).toEqual("99th");
+  expect(getOrdinalNumber(1000)).toEqual("1000th");
+});
+

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

@@ -1,5 +1,10 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(str, count) {
+  if (count >= 0) {
+    return str.repeat(count)
+  }
+  else {
+    throw new Error("Error")
+  }
 }
 
 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 return the original string when count is 1", () => {
+  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,
 // Then it should return an empty string.
 
+test("should return an empty string when count is 0", () => {
+  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 = -1;
+  expect(function(){repeatStr(str, count)}).toThrow()
+});