just checking in a test file for demo purposes.

testing/test_sample.py

@@ -0,0 +1,32 @@
+"""Small sample tests for pytestdemo.
+
+These are intentionally simple so running the single file should pass
+in any standard pytest environment.
+"""
+
+import pytest
+
+
+def add(a, b):
+    """Simple helper used by the tests."""
+    return a + b
+
+
+def test_add_positive_numbers():
+    """A basic happy-path test."""
+    assert add(2, 3) == 5
+
+
+def test_add_with_zero():
+    """Edge case: adding zero should be identity."""
+    assert add(0, 7) == 7
+
+
+def test_add_negative_numbers():
+    """Ensure negatives work as expected."""
+    assert add(-2, -3) == -5
+
+
+@pytest.mark.parametrize("a,b,expected", [(1, 2, 3), (10, -1, 9), (0, 0, 0)])
+def test_add_parametrized(a, b, expected):
+    assert add(a, b) == expected