1 files changed, 15 insertions, 0 deletions
diff --git a/tests/test_cli.py b/tests/test_cli.py
new file mode 100644
index 0000000..4725f93
--- /dev/null
+++ b/tests/test_cli.py
@@ -0,0 +1,15 @@
+from unittest import mock
+
+from myst_parser.cli import print_anchors
+
+
+def test_print_anchors():
+    from io import StringIO
+
+    in_stream = StringIO("# a\n\n## b\n\ntext")
+    out_stream = StringIO()
+    with mock.patch("sys.stdin", in_stream):
+        with mock.patch("sys.stdout", out_stream):
+            print_anchors(["-l", "1"])
+    out_stream.seek(0)
+    assert out_stream.read().strip() == '<h1 id="a"></h1>'