3.Test file added

Author: Rusty-user365

_test.py

@@ -0,0 +1,37 @@
+import pytest
+
+#functions to test suare
+
+
+def square(x):    return x ** 2
+def cube(x):      return x ** 3
+def fifth_power(x): return x ** 5
+
+
+#testing functions
+
+def test_square():
+    assert square(2) == 4
+    assert square(-3) == 9
+    assert square(0) == 0   
+
+
+
+def test_cube():
+    assert cube(2) == 8
+    assert cube(-3) == -27
+    assert cube(0) == 0
+
+
+def test_fifth_power():
+    assert fifth_power(2) == 32
+    assert fifth_power(-3) == -243
+    assert fifth_power(0) == 0
+
+
+
+#Test for invalid input
+
+def test_invalid_input():
+    with pytest.raises(TypeError):
+        square("string")