Fix pytest warnings

Pytest 9.1.0 added a warning on non-Collection iterables used for
parameterization (treated as an error per pytest.ini).

https://github.com/pytest-dev/pytest/releases/tag/9.1.0

Author: victorlin

tests/cram.py

@@ -7,7 +7,7 @@
 topdir = testsdir.parent
 
 @pytest.mark.skipif(os.name != "posix", reason = "cram requires a POSIX platform")
-@pytest.mark.parametrize("testfile", testsdir.glob("*.cram"), ids = str)
+@pytest.mark.parametrize("testfile", list(testsdir.glob("*.cram")), ids = str)
 def pytest_cram(testfile):
     # Check the exit status ourselves for nicer test output on failure
     result = run(["cram", testfile], cwd = topdir)

tests/markdown.py

@@ -8,10 +8,12 @@
 datadir = testsdir / "data/markdown/"
 
 def cases(pattern):
-    for case in datadir.glob(pattern):
-        yield pytest.param(
+    return [
+        pytest.param(
             case,
             id = str(case.relative_to(topdir)))
+        for case in datadir.glob(pattern)
+    ]
 
 
 @pytest.mark.parametrize("case", cases("roundtrip-*.md"))