diff --git a/__pycache__/main.cpython-312.pyc b/__pycache__/main.cpython-312.pyc
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diff --git a/__pycache__/test_main.cpython-312.pyc b/__pycache__/test_main.cpython-312.pyc
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diff --git a/main.py b/main.py
index 3825247..4cce7cd 100644
--- a/main.py
+++ b/main.py
@@ -1,19 +1,72 @@
 def factorial(n):
-    """Calculates the factorial of a non-negative integer."""
-    # TODO: Implement the logic
-    pass 
+    fact = 1
 
-def fibonacci(n):
-    """Returns the nth number in the Fibonacci sequence."""
-    # TODO: Implement the logic
-    return None
+    try:
+        n = int(n)
+    except:
+        raise ValueError("n not an integer")
+    
+    for i in range(1, n+1):
+        if n < 0:
+            return "input positive number"
+        if n == 0:
+            return 1
+        else:
+            fact *= i
+    return fact
 
-def fizzbuzz(n):
+# print(factorial(0))
+
+def fibonacci(n):
     """
-    Returns a list for the FizzBuzz game up to n.
-    - Multiples of 3 are "Fizz"
-    - Multiples of 5 are "Buzz"
-    - Multiples of both 3 and 5 are "FizzBuzz"
+    fn = f(n-1)+ f(n-2)
     """
-    # TODO: Implement the logic
-    return []
\ No newline at end of file
+    try:
+        n = int(n)
+    except:
+        raise ValueError("n not an integer")
+    if n < 0:
+        return "only positive integers"
+    elif n == 1:
+        return "only numbers above 1"
+    else:
+        seq = [0,1]
+        for i in range(2,n+1):
+            num = seq[i-1] + seq[i-2]
+            seq.append(num)
+            nth = seq[-1]
+
+    return [nth, seq]
+
+# print(fibonacci("p"))
+    
+
+def fizzbuzz(n):
+    result = []
+    # try:
+    #     n = int(n)
+    # except:
+    #     raise ValueError("n not an integer")
+    
+    for i in range(1, n+1):  
+    # while n <= n:  
+        if i%3==0 and i%5==0:
+            result.append("FizzBuzz")
+
+        elif i%3==0:
+           result.append("Fizz")
+
+        elif i%5==0:
+            result.append("Buzz")
+            
+        else:
+            result.append(i) 
+
+    return result
+
+    # return i
+# fizzbuzz(3)
+# print(fizzbuzz(15))
+
+
+
diff --git a/test_main.py b/test_main.py
new file mode 100644
index 0000000..7e5fd6c
--- /dev/null
+++ b/test_main.py
@@ -0,0 +1,29 @@
+import unittest
+from main import factorial, fibonacci, fizzbuzz
+
+class TestMain(unittest.TestCase):
+    def test_factorial(self):
+        self.assertEqual(factorial(3), 6)
+        self.assertNotEqual(factorial(-1), "input positive number")
+        self.assertEqual(factorial(0), 1)
+        # self.assertRaises(NameError,fibonacci, n)
+        self.assertRaises(ValueError, fibonacci, "n")
+        
+
+
+    def test_fibonacci(self):
+        self.assertEqual(fibonacci(6),[8, [0,1,1,2,3,5,8]])
+        self.assertEqual(fibonacci(-1), "only positive integers")
+        self.assertEqual(fibonacci(1), "only numbers above 1")
+        # self.assertRaises(NameError, fibonacci(p))
+        self.assertRaises(ValueError, fibonacci, "p")
+
+    def test_fizzbuzz(self):
+        self.assertEqual(fizzbuzz(3),[1,2, 'Fizz'])
+        self.assertEqual(fizzbuzz(5),[1, 2, 'Fizz', 4, 'Buzz'])
+        self.assertEqual(fizzbuzz(15),[1, 2, 'Fizz', 4, 'Buzz', 'Fizz', 7, 8, 'Fizz', 'Buzz', 11, 'Fizz', 13, 14, 'FizzBuzz'])
+        # self.assertRaises(ValueError, fizzbuzz, "f")
+
+
+if __name__ == "__main__":
+    unittest.main()