Fix stdout/stderr redirects

tests/benchmarks/test_print.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+import sys
+from typing import TYPE_CHECKING
+
+import pytest
+
+if TYPE_CHECKING:
+    from pytest import CaptureFixture
+
+
+@pytest.mark.benchmark
+def test_print():
+    """Test print statements are captured by pytest (i.e., not printed to terminal in
+    the middle of the progress bar) and only displayed after test run (on failures)."""
+    print("print to stdout")
+    print("print to stderr", file=sys.stderr)
+
+
+@pytest.mark.benchmark
+def test_capsys(capsys: CaptureFixture):
+    """Test print statements are captured by capsys (i.e., not printed to terminal in
+    the middle of the progress bar) and can be inspected within test."""
+    print("print to stdout")
+    print("print to stderr", file=sys.stderr)
+
+    stdout, stderr = capsys.readouterr()
+
+    assert stdout == "print to stdout\n"
+    assert stderr == "print to stderr\n"