Manchester | 26-ITP-Jan | Farancis Dore Etonkie | Sprint 3 | Module Structuring and testing data

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

@@ -11,14 +11,44 @@ const countChar = require("./count");
 // Then it should correctly count occurrences of `char`.
 
 test("should count multiple occurrences of a character", () => {
-  const str = "aaaaa";
-  const char = "a";
-  const count = countChar(str, char);
-  expect(count).toEqual(5);
+const str = "aaaaa";
+const char = "a";
+const count = countChar(str, char);
+expect(count).toEqual(5);
 });
 
 // Scenario: No Occurrences
 // Given the input string `str`,
 // 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 return 0 when character does not occur in the string", () => {
+const str = "hello world";
+const char = "x";
+const count = countChar(str, char);
+expect(count).toEqual(0);
+});
+
+// Scenario: Empty String
+// Given an empty string `str`,
+// And any character `char` (e.g., 'a'),
+// When the function is called with these inputs,
+// Then it should return 0, as there are no characters to count in an empty string.
+test("should return 0 when the input string is empty", () => {
+const str = "";
+const char = "a";
+const count = countChar(str, char);
+expect(count).toEqual(0);
+});
+
+// Scenario: Case Sensitivity
+// Given the input string `str`,
+// And a character `char` that exists in `str` but with different cases (e.g., 'a' and 'A'),
+// When the function is called with these inputs,
+// Then it should count occurrences of `char` in a case-sensitive manner, treating uppercase and lowercase characters as distinct.
+test("should count characters in a case-sensitive manner", () => {
+const str = "AaAaA";
+const char = "a";
+const count = countChar(str, char);
+expect(count).toEqual(3);
+}); 

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

@@ -14,7 +14,44 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // 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");
+expect(getOrdinalNumber(1)).toEqual("1st");
+expect(getOrdinalNumber(21)).toEqual("21st");
+expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+// Case 2: Numbers ending with 2 (but not 12)
+// When the number ends with 2, except those ending with 12,
+// Then the function should return a string by appending "nd" to the number.
+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");
+});
+
+// Case 3: Numbers ending with 3 (but not 13)
+// When the number ends with 3, except those ending with 13,
+// Then the function should return a string by appending "rd" to the number.
+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");
+});
+
+// Case 4: Numbers ending with 11, 12, or 13
+// When the number ends with 11, 12, or 13,
+// Then the function should return a string by appending "th" to the number.
+test("should append 'th' for numbers ending with 11, 12, or 13", () => {
+expect(getOrdinalNumber(11)).toEqual("11th");
+expect(getOrdinalNumber(12)).toEqual("12th");
+expect(getOrdinalNumber(13)).toEqual("13th");
+});
+
+// Case 5: All other numbers
+// When the number does not end with 1, 2, or 3 (except those ending with 11, 12, or 13),
+// Then the function should return a string by appending "th" to the number.
+test("should append 'th' for all other numbers", () => {
+expect(getOrdinalNumber(4)).toEqual("4th");
+expect(getOrdinalNumber(10)).toEqual("10th");
+expect(getOrdinalNumber(14)).toEqual("14th");
+expect(getOrdinalNumber(100)).toEqual("100th");
+}); 

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

@@ -10,23 +10,40 @@ const repeatStr = require("./repeat-str");
 // Then it should return a string that contains the original `str` repeated `count` times.
 
 test("should repeat the string count times", () => {
-  const str = "hello";
-  const count = 3;
-  const repeatedStr = repeatStr(str, count);
-  expect(repeatedStr).toEqual("hellohellohello");
+const str = "hello";
+const count = 3;
+const repeatedStr = repeatStr(str, count);
+expect(repeatedStr).toEqual("hellohellohello");
 });
 
 // Case: handle count of 1:
 // Given a target string `str` and a `count` equal to 1,
 // 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 = "world";
+const count = 1;
+const repeatedStr = repeatStr(str, count);
+expect(repeatedStr).toEqual("world");
+});
 
 // 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 = "test";
+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 = "error";
+const count = -1;
+expect(() => repeatStr(str, count)).toThrow("Count must be a non-negative integer");
+});