Added test checking that cases can be parametrized with cases. Fixes #158

Author: Sylvain MARIE

pytest_cases/tests/cases/issues/test_issue_158.py

@@ -0,0 +1,15 @@
+import pytest_cases
+
+
+def case_x():
+    return 42
+
+
+@pytest_cases.parametrize_with_cases("x", case_x)
+def case_y(x):
+    return 3*x + 2
+
+
+@pytest_cases.parametrize_with_cases("y", case_y)
+def test_foo(y):
+    print(y)