West Midlands | Sept-ITP-25 | Mustaf Asani | Sprint 3 | Coursework/sprint 3 practice tdd

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

@@ -1,5 +1,7 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  const totalChar = stringOfCharacters.split(findCharacter);
+
+  return totalChar.length - 1;
 }
 
 module.exports = countChar;

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

@@ -15,10 +15,19 @@ test("should count multiple occurrences of a character", () => {
   const char = "a";
   const count = countChar(str, char);
   expect(count).toEqual(5);
+  expect(countChar("banana", "n")).toEqual(2);
+  expect(countChar("=^.^=", "^")).toEqual(2);
+  expect(countChar("=^.^=", ".")).toEqual(1);
 });
 
 // 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 check for no occurrences of a character", () => {
+  const str = "abcdef";
+  const char = "g";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

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

@@ -1,5 +1,33 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  if (Number.isInteger(num) && num >= 0) {
+    const lastDigit = num % 10;
+
+    if (lastDigit === 1) {
+      if (num % 100 === 11) {
+        return `${num}th`;
+      }
+
+      return `${num}st`;
+    } else if (lastDigit === 2) {
+      if (num > 10) {
+        if (num % 100 === 12) {
+          return `${num}th`;
+        }
+      }
+      return `${num}nd`;
+    } else if (lastDigit === 3) {
+      if (num > 10) {
+        if (num % 100 === 13) {
+          return `${num}th`;
+        }
+      }
+      return `${num}rd`;
+    }
+
+    return `${num}th`;
+  } else {
+    throw new Error("wrong input used please enter an integer from 0 upwards");
+  }
 }
 
 module.exports = getOrdinalNumber;

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

@@ -8,6 +8,49 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // When the number is 1,
 // Then the function should return "1st"
 
-test("should return '1st' for 1", () => {
+test("should append 'st' to numbers with 1 at the end except for those ending with 11", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(101)).toEqual("101st");
+  expect(getOrdinalNumber(151)).toEqual("151st");
+  expect(getOrdinalNumber(2061)).toEqual("2061st");
+});
+
+test("should append 'nd' to numbers with 2 at the end except for those ending with 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(342)).toEqual("342nd");
+  expect(getOrdinalNumber(592)).toEqual("592nd");
+  expect(getOrdinalNumber(1972)).toEqual("1972nd");
+});
+
+test("should append 'rd' to numbers with 3 at the end except for those ending with 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+  expect(getOrdinalNumber(353)).toEqual("353rd");
+  expect(getOrdinalNumber(93)).toEqual("93rd");
+  expect(getOrdinalNumber(783)).toEqual("783rd");
+});
+
+test("should append 'th' to all other numbers which do not end in 1,2,3,11,12 or 13", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(9)).toEqual("9th");
+  expect(getOrdinalNumber(211)).toEqual("211th");
+  expect(getOrdinalNumber(1013)).toEqual("1013th");
+  expect(getOrdinalNumber(17)).toEqual("17th");
+});
+
+test("should throw an error if the input anything other than a positive integer", () => {
+  expect(() => getOrdinalNumber(1.09)).toThrow(
+    "wrong input used please enter an integer from 0 upwards"
+  );
+  expect(() => getOrdinalNumber("thirteen")).toThrow(
+    "wrong input used please enter an integer from 0 upwards"
+  );
+  expect(() => getOrdinalNumber(0.9)).toThrow(
+    "wrong input used please enter an integer from 0 upwards"
+  );
+  expect(() => getOrdinalNumber(-10)).toThrow(
+    "wrong input used please enter an integer from 0 upwards"
+  );
 });