Added tests for factorial and conversions

Author: OmkarPathak

tests/test_math.py

@@ -3,7 +3,9 @@
 from pygorithm.math import (
     lcm,
     lcm_using_gcd,
-    sieve_of_eratosthenes)
+    sieve_of_eratosthenes,
+    factorial,
+    conversion)
 
 class TestLCM(unittest.TestCase):
     def test_lcm(self):
@@ -16,5 +18,22 @@ class TestSieveOfEratosthenes(unittest.TestCase):
     def test_sieve_of_eratosthenes(self):
         self.assertEqual(sieve_of_eratosthenes.sieve_of_eratosthenes(10), [2, 3, 5, 7])
 
+class TestFactorial(unittest.TestCase):
+    def test_factorial(self):
+        self.assertEqual(factorial.factorial(10), 3628800)
+
+class TestConversion(unittest.TestCase):
+    def test_dec_to_bin(self):
+        self.assertEqual(conversion.decimal_to_binary(2), '10')
+
+    def test_bin_to_dec(self):
+        self.assertEqual(conversion.binary_to_decimal('1010'), 10)
+
+    def test_dec_to_hex(self):
+        self.assertEqual(conversion.decimal_to_hex(30), '1E')
+
+    def test_hex_to_dex(self):
+        self.assertEqual(conversion.hex_to_decimal('1E'), 30)
+
 if __name__ == '__main__':
     unittest.main()