added generic_test for logitic funtion

testing_project/logistic.py

@@ -1 +1,3 @@
 # Your code goes here
+def f(x, r):
+    return r*x*(1-x)

testing_project/test_logistic.py

@@ -20,6 +20,19 @@ def test_f_corner_cases():
 # x=0.5, r=2   => f(x, r)=0.5
 
 
+def test_generic_cased():
+    
+    cases = [
+             (0.1, 2.2, 0.198),
+             (0.2, 3.4, 0.544),
+             (0.5, 2, 0.5)]
+
+    for x, r, expected in cases:
+        result = f(x, r)
+        assert_allclose(result, expected)
+
+
+
 # Hands on 2:
 # parametrize the above test using @pytest.mark.parametrize