TST: Ensure f2py defaults are tested

HaoZeke · charris · commit 659751bab76e · 2023-11-20T12:44:14.000-07:00
diff --git a/numpy/f2py/tests/test_f2py2e.py b/numpy/f2py/tests/test_f2py2e.py
@@ -1,6 +1,7 @@
 import textwrap, re, sys, subprocess, shlex
 from pathlib import Path
 from collections import namedtuple
+import platform
 
 import pytest
 
@@ -197,6 +198,20 @@ def test_gen_pyf_no_overwrite(capfd, hello_world_f90, monkeypatch):
             assert "Use --overwrite-signature to overwrite" in err
 
 
+@pytest.mark.skipif((platform.system() != 'Linux') and (sys.version_info <= (3, 12)), reason='Compiler and 3.12 required')
+def test_untitled_cli(capfd, hello_world_f90, monkeypatch):
+    """Check that modules are named correctly
+
+    CLI :: defaults
+    """
+    ipath = Path(hello_world_f90)
+    monkeypatch.setattr(sys, "argv", f"f2py --backend meson -c {ipath}".split())
+    with util.switchdir(ipath.parent):
+        f2pycli()
+        out, _ = capfd.readouterr()
+        assert "untitledmodule.c" in out
+
+
 @pytest.mark.xfail
 def test_f2py_skip(capfd, retreal_f77, monkeypatch):
     """Tests that functions can be skipped
