fixing no time bounds from command line

mecompute/run.py

@@ -135,11 +135,15 @@ def cli(d_config, start, end, time_window, force_overwrite, p_config, h_template
 
         process -s 2016-01-02 -t 2 OUT_DIR
     """
-    start, end = _get_timebounds(start, end, time_window)
-    dest_dir = output_dir.replace("%S%", start).replace("%E%", end)
-    ret = process(d_config, start, end, dest_dir,
-                  force_overwrite=force_overwrite, p_config=p_config,
-                  html_template=h_template)
+    if start is None and end is None and time_window is None:
+        print('No time bounds specified. Please provide -s, -e or -t', file=sys.stderr)
+        ret = False
+    else:
+        start, end = _get_timebounds(start, end, time_window)
+        dest_dir = output_dir.replace("%S%", start).replace("%E%", end)
+        ret = process(d_config, start, end, dest_dir,
+                      force_overwrite=force_overwrite, p_config=p_config,
+                      html_template=h_template)
     if ret:
         sys.exit(0)
     sys.exit(1)

test/test_workflow.py

@@ -34,6 +34,19 @@ def test_proc_ess_params(mock_process, capsys):
            timedelta(days=days)
 
 
+@patch('mecompute.run.process')
+def test_proc_no_time_bounds(mock_process, capsys):
+    runner = CliRunner()
+    now = datetime.utcnow().replace(microsecond=0,hour=0, minute=0, second=0)
+    days = 365
+    result = runner.invoke(cli, ['-f',
+                                 '-d', TEST_DOWNLOAD_CONFIG_PATH,
+                                 TEST_TMP_ROOT_DIR])
+    assert not mock_process.called
+    assert 'no time bounds specified' in result.output.lower()
+    assert result.exit_code != 0
+
+
 @pytest.mark.parametrize('params', [
     ['-s', '2022-05-20T09:00:00', '-e', '2022-05-20T13:00:00'],  # process all db events
 ])