feat: add a new test

Author: kannon92

tests/echo-stdout-log-dir.cwl

@@ -0,0 +1,10 @@
+#!/usr/bin/env cwl-runner
+cwlVersion: v1.0
+class: CommandLineTool
+inputs:
+  - id: inp
+    type: string
+    inputBinding: {}
+outputs: []
+baseCommand: echo
+stdout: out.txt

tests/test_stdout_stderr_log_dir.py

@@ -17,3 +17,17 @@ def test_log_dir_echo_output() -> None:
     )
     assert "completed success" in stderr, stderr
     assert json.loads(stdout)['out'].strip('\n') == 'hello'
+
+def test_log_dir_echo_no_output() -> None:
+    _, stdout, stderr = get_main_output(
+        [
+            "--log-dir",
+            "logs",
+            "tests/echo-stdout-log-dir.cwl",
+            "--inp", "hello"
+        ]
+    )
+    for dir in os.listdir('logs'):
+        for file in os.listdir(f'logs/{dir}'):
+            assert file == 'out.txt'
+