add tests

Author: kubudi

solutions/prime_number/tests_emreyilmaz.py

@@ -1,4 +1,22 @@
 from prime import is_prime
+import pytest
 
 
-# some code testing is_prime...
+# some code testing is_prime...
+def test_negative():
+    is_prime(-4) == True
+
+def test_prime():
+    is_prime(1441) == True
+
+def test_not_prime():
+    is_prime(1000) == False
+
+
+def test_big_number():
+    is_prime(1000000) == False
+
+# This should fail
+def test_invalid_input():
+    with pytest.raises(TypeError):
+      is_prime("13") == True