From 618504b04fc9efc3867bf7b2c40179f83c880e90 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 16:04:04 +0100
Subject: [PATCH 01/20] added countChar test for when character does not occur,
 it fails

---
 practice-tdd/count.test.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/practice-tdd/count.test.js b/practice-tdd/count.test.js
index cb3aaae59..7f603e40e 100644
--- a/practice-tdd/count.test.js
+++ b/practice-tdd/count.test.js
@@ -22,3 +22,9 @@ 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 return 0 when character does not occur", () => {
+  const str = "aaaabcd";
+  const char = "e";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});

From 833d950cbdc23b174ced590039ca59861c83ae9a Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 16:44:17 +0100
Subject: [PATCH 02/20] implemented countChar function, tests now pass

---
 practice-tdd/count.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/practice-tdd/count.js b/practice-tdd/count.js
index 5518c5712..ffdb077ed 100644
--- a/practice-tdd/count.js
+++ b/practice-tdd/count.js
@@ -1,3 +1,10 @@
 export function countChar(stringOfCharacters, findCharacter) {
-  return 5
+  let count = 0;
+
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+  return count;
 }

From dc8d57f5e185370769e8e2019bec6b4545385358 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 17:08:56 +0100
Subject: [PATCH 03/20] added repeatStr test for when count is 1

---
 practice-tdd/repeat-str.test.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/practice-tdd/repeat-str.test.js b/practice-tdd/repeat-str.test.js
index 8a7036102..5a4a9aaf1 100644
--- a/practice-tdd/repeat-str.test.js
+++ b/practice-tdd/repeat-str.test.js
@@ -20,6 +20,12 @@ test("should repeat the string count times", () => {
 // 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 equals 1", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatStr).toEqual("hello");
+});
 
 // Case: Handle count of 0:
 // Given a target string `str` and a `count` equal to 0,

From dccf8e33e8a81a09ae4718929c4ca9a59d6d8aad Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 17:36:47 +0100
Subject: [PATCH 04/20] fixed spelling error in test

---
 practice-tdd/repeat-str.test.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/practice-tdd/repeat-str.test.js b/practice-tdd/repeat-str.test.js
index 5a4a9aaf1..007c5bcca 100644
--- a/practice-tdd/repeat-str.test.js
+++ b/practice-tdd/repeat-str.test.js
@@ -24,7 +24,7 @@ test("should return the original string when count equals 1", () => {
   const str = "hello";
   const count = 1;
   const repeatedStr = repeatStr(str, count);
-  expect(repeatStr).toEqual("hello");
+  expect(repeatedStr).toEqual("hello");
 });
 
 // Case: Handle count of 0:

From c47e4e009a14d1e98a3cf2c55115dc74bf445548 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 17:37:38 +0100
Subject: [PATCH 05/20] implemented repeatStr function, test now passes

---
 practice-tdd/repeat-str.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/practice-tdd/repeat-str.js b/practice-tdd/repeat-str.js
index af273f3b0..56d2226c9 100644
--- a/practice-tdd/repeat-str.js
+++ b/practice-tdd/repeat-str.js
@@ -1,5 +1,7 @@
-export function repeatStr() {
-  // Your implementation of this function must *not* call String.prototype.repeat (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat).
-  // The goal is to re-implement that function, not to use it.
-  return "hellohellohello";
+export function repeatStr(str, count) {
+  let result = "";
+  for (let i = 0; i < count; i++) {
+    result += str;
+  }
+  return result;
 }

From 3f2d32ab295721ede3b59a977e80d6d7817dc2c6 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 17:48:15 +0100
Subject: [PATCH 06/20] added repeatStr test to check it returns an empty
 string when count is 0

---
 practice-tdd/repeat-str.test.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/practice-tdd/repeat-str.test.js b/practice-tdd/repeat-str.test.js
index 007c5bcca..3db57c5af 100644
--- a/practice-tdd/repeat-str.test.js
+++ b/practice-tdd/repeat-str.test.js
@@ -31,6 +31,12 @@ test("should return the original string when count equals 1", () => {
 // 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 equals 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`,

From 74a438d16ba5d659f44729c760622bd47d722efd Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 17:55:18 +0100
Subject: [PATCH 07/20] added test to check if repeatStr throws an error when
 count is 0

---
 practice-tdd/repeat-str.test.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/practice-tdd/repeat-str.test.js b/practice-tdd/repeat-str.test.js
index 3db57c5af..35ae5c13c 100644
--- a/practice-tdd/repeat-str.test.js
+++ b/practice-tdd/repeat-str.test.js
@@ -42,3 +42,8 @@ test("should return an empty string when count equals 0", () => {
 // 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 a negative number", () => {
+  const str = hello;
+  const count = -2;
+  expect(() => repeatStr(str, count)).toThrow();
+});

From 857468b2fc8bfea8c23b65d1157e7e48c480c8b9 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 18:05:27 +0100
Subject: [PATCH 08/20] fixed syntax error in  when count is negative test,
 test fails

---
 practice-tdd/repeat-str.test.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/practice-tdd/repeat-str.test.js b/practice-tdd/repeat-str.test.js
index 35ae5c13c..fce69a7e9 100644
--- a/practice-tdd/repeat-str.test.js
+++ b/practice-tdd/repeat-str.test.js
@@ -43,7 +43,7 @@ test("should return an empty string when count equals 0", () => {
 // 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 a negative number", () => {
-  const str = hello;
+  const str = "hello";
   const count = -2;
   expect(() => repeatStr(str, count)).toThrow();
 });

From 141163d6ff3bfbc4054ccd1b84af97560fd80bd3 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sat, 17 Oct 2026 18:46:37 +0100
Subject: [PATCH 09/20] implemented repeatStr with count error

---
 practice-tdd/repeat-str.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/practice-tdd/repeat-str.js b/practice-tdd/repeat-str.js
index 56d2226c9..36828f586 100644
--- a/practice-tdd/repeat-str.js
+++ b/practice-tdd/repeat-str.js
@@ -1,4 +1,7 @@
 export function repeatStr(str, count) {
+  if (count < 0) {
+    throw new Error("warning! Count cannot be negative!");
+  }
   let result = "";
   for (let i = 0; i < count; i++) {
     result += str;

From 223c12082348b6d0488852a2426073acaf518aa9 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 11:31:38 +0100
Subject: [PATCH 10/20] implemented getOrdinalNumber function to handle numbers
 ending in 1, tests now pass

---
 practice-tdd/get-ordinal-number.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/practice-tdd/get-ordinal-number.js b/practice-tdd/get-ordinal-number.js
index 5c6291f5e..2278a13f8 100644
--- a/practice-tdd/get-ordinal-number.js
+++ b/practice-tdd/get-ordinal-number.js
@@ -1,3 +1,5 @@
 export function getOrdinalNumber(num) {
-  return "1st";
+  if (num % 10 === 1) {
+    return `${num}st`;
+  }
 }

From ffae1e7f1f1ced2dda382f30db8bfa8e0c703a52 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 11:37:25 +0100
Subject: [PATCH 11/20] added test for getOrdinalNumber function to check if th
 gets added to number 11

---
 practice-tdd/get-ordinal-number.test.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js
index e23174a18..3cab406e3 100644
--- a/practice-tdd/get-ordinal-number.test.js
+++ b/practice-tdd/get-ordinal-number.test.js
@@ -18,3 +18,7 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+test('should append "th" to number 11', () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+})

From fb5170f03da4b1b32ba3bee71d493f6d29236a40 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 11:46:16 +0100
Subject: [PATCH 12/20] implemented getOrdinalNumber function to handle numbers
 ending in 11, tests now pass

---
 practice-tdd/get-ordinal-number.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/practice-tdd/get-ordinal-number.js b/practice-tdd/get-ordinal-number.js
index 2278a13f8..7c0901368 100644
--- a/practice-tdd/get-ordinal-number.js
+++ b/practice-tdd/get-ordinal-number.js
@@ -1,5 +1,7 @@
 export function getOrdinalNumber(num) {
-  if (num % 10 === 1) {
-    return `${num}st`;
+if(num % 100 === 11){
+  return `${num}th`
+} else if(num % 10 === 1){
+    return `${num}st`
   }
 }

From 7c3e70698b717db7068301825bffdae74f6ebf5e Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 11:49:46 +0100
Subject: [PATCH 13/20] updated previous test wording to be more specific about
 numbers ending in 11

---
 practice-tdd/get-ordinal-number.test.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js
index 3cab406e3..712d750b9 100644
--- a/practice-tdd/get-ordinal-number.test.js
+++ b/practice-tdd/get-ordinal-number.test.js
@@ -19,6 +19,6 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
 
-test('should append "th" to number 11', () => {
+test('should append "th" to numbers ending in 11', () => {
   expect(getOrdinalNumber(11)).toEqual("11th");
-})
+});

From e5ba94773e6281fe100c659c753346e487d4835d Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 11:56:40 +0100
Subject: [PATCH 14/20] added test for numbers ending in 2, except 12, test
 fails

---
 practice-tdd/get-ordinal-number.test.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js
index 712d750b9..cf9dcc9a3 100644
--- a/practice-tdd/get-ordinal-number.test.js
+++ b/practice-tdd/get-ordinal-number.test.js
@@ -22,3 +22,9 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
 test('should append "th" to numbers ending in 11', () => {
   expect(getOrdinalNumber(11)).toEqual("11th");
 });
+
+test('should append "nd" to numbers ending in 2, apart from those ending in 12', () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(32)).toEqual("32nd");
+  expect(getOrdinalNumber(142)).toEqual("142nd");
+});

From 71037555ddade2e7f64d5b78db81a13fb8a74fbf Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 12:03:32 +0100
Subject: [PATCH 15/20] implemented getOrdinalNumber function to handle numbers
 ending in 12 and 2, tests now pass

---
 practice-tdd/get-ordinal-number.js | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/practice-tdd/get-ordinal-number.js b/practice-tdd/get-ordinal-number.js
index 7c0901368..2bd9f97c7 100644
--- a/practice-tdd/get-ordinal-number.js
+++ b/practice-tdd/get-ordinal-number.js
@@ -1,7 +1,11 @@
 export function getOrdinalNumber(num) {
-if(num % 100 === 11){
-  return `${num}th`
-} else if(num % 10 === 1){
-    return `${num}st`
+  if (num % 100 === 11) {
+    return `${num}th`;
+  } else if (num % 10 === 1) {
+    return `${num}st`;
+  } else if (num % 100 === 12) {
+    return `${num}th`;
+  } else if (num % 10 === 2) {
+    return `${num}nd`;
   }
 }

From 10424c5da26b969ba73fcc530515221d52def516 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 12:11:21 +0100
Subject: [PATCH 16/20] added tests for numbers ending in 3, expect 13, tests
 fail

---
 practice-tdd/get-ordinal-number.test.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js
index cf9dcc9a3..00e8b1c83 100644
--- a/practice-tdd/get-ordinal-number.test.js
+++ b/practice-tdd/get-ordinal-number.test.js
@@ -28,3 +28,9 @@ test('should append "nd" to numbers ending in 2, apart from those ending in 12',
   expect(getOrdinalNumber(32)).toEqual("32nd");
   expect(getOrdinalNumber(142)).toEqual("142nd");
 });
+
+test('should append "rd" to numbers ending in 3, apart from those ending in 13', () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(33)).toEqual("33rd");
+  expect(getOrdinalNumber(143)).toEqual("143rd");
+});

From 8e97e3395759a04610f5d32224cc8d69b86f2463 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 12:16:34 +0100
Subject: [PATCH 17/20] refactored tests to group 11, 12,  and 13 as exceptions
 with th

---
 practice-tdd/get-ordinal-number.test.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js
index 00e8b1c83..6ae76c1cd 100644
--- a/practice-tdd/get-ordinal-number.test.js
+++ b/practice-tdd/get-ordinal-number.test.js
@@ -19,8 +19,10 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
 
-test('should append "th" to numbers ending in 11', () => {
+test('should append "th" to numbers ending in 11, 12, or 13', () => {
   expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
 });
 
 test('should append "nd" to numbers ending in 2, apart from those ending in 12', () => {

From 00f12298bf0606f56d50d686fd6fa151e3289265 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 12:22:29 +0100
Subject: [PATCH 18/20] implemented getOrdinalNumber function to handle numbers
 ending in 13 and 3, tests now pass

---
 practice-tdd/get-ordinal-number.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/practice-tdd/get-ordinal-number.js b/practice-tdd/get-ordinal-number.js
index 2bd9f97c7..89570a7ee 100644
--- a/practice-tdd/get-ordinal-number.js
+++ b/practice-tdd/get-ordinal-number.js
@@ -7,5 +7,9 @@ export function getOrdinalNumber(num) {
     return `${num}th`;
   } else if (num % 10 === 2) {
     return `${num}nd`;
+  } else if (num % 100 === 13) {
+    return `${num}th`;
+  } else if (num % 10 === 3) {
+    return `${num}rd`;
   }
 }

From b6b29b14382550fc017ae424ab545caf3c4f3a91 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 12:33:53 +0100
Subject: [PATCH 19/20] added getOrdinalNumber tests for other numbers that
 don't end in 1, 2, or 3

---
 practice-tdd/get-ordinal-number.test.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js
index 6ae76c1cd..bdcee5858 100644
--- a/practice-tdd/get-ordinal-number.test.js
+++ b/practice-tdd/get-ordinal-number.test.js
@@ -36,3 +36,10 @@ test('should append "rd" to numbers ending in 3, apart from those ending in 13',
   expect(getOrdinalNumber(33)).toEqual("33rd");
   expect(getOrdinalNumber(143)).toEqual("143rd");
 });
+
+test(`should append "th" to other numbers that don't end in 1, 2, or 3`, () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(24)).toEqual("24th");
+  expect(getOrdinalNumber(100)).toEqual("100th");
+});

From e8faea9e1bd95a08a206b3fce5945b946b7e2678 Mon Sep 17 00:00:00 2001
From: marscancode <marsadesina@gmail.com>
Date: Sun, 18 Oct 2026 12:38:39 +0100
Subject: [PATCH 20/20] implemented function to handle all other numbers that
 don't end in 1, 2, or 3

---
 practice-tdd/get-ordinal-number.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/practice-tdd/get-ordinal-number.js b/practice-tdd/get-ordinal-number.js
index 89570a7ee..1d361428a 100644
--- a/practice-tdd/get-ordinal-number.js
+++ b/practice-tdd/get-ordinal-number.js
@@ -11,5 +11,7 @@ export function getOrdinalNumber(num) {
     return `${num}th`;
   } else if (num % 10 === 3) {
     return `${num}rd`;
+  } else {
+    return `${num}th`;
   }
 }