diff --git a/tests/test_template_filter.py b/tests/test_template_filter.py
new file mode 100644
index 0000000..c3db05e
--- /dev/null
+++ b/tests/test_template_filter.py
@@ -0,0 +1,15 @@
+"""Tests for template filter."""
+
+import json
+from click.testing import CliRunner
+from bloggereasy.cli import cli
+
+def test_list_tags(tmp_path):
+    templates_dir = tmp_path / "data" / "templates"
+    templates_dir.mkdir(parents=True)
+    (templates_dir / "minimal.json").write_text(json.dumps({"name": "Minimal", "tags": ["clean", "simple"]}))
+    
+    runner = CliRunner()
+    result = runner.invoke(cli, ["templates", "--list-tags"], catch_exceptions=False)
+    assert "clean" in result.output
+    assert "simple" in result.output