Make the requested output directory, if it doesn't exist yet

Author: mr-c

cwlupgrader/main.py

@@ -4,6 +4,8 @@
 import argparse
 import copy
 import logging
+import os
+import os.path
 import stat
 import sys
 from collections.abc import MutableSequence, Sequence
@@ -62,6 +64,8 @@ def main(args: Optional[List[str]] = None) -> int:
 def run(args: argparse.Namespace) -> int:
     """Main function."""
     imports: Set[str] = set()
+    if args.dir and not os.path.exists(args.dir):
+        os.makedirs(args.dir)
     for path in args.inputs:
         _logger.info("Processing %s", path)
         document = load_cwl_document(path)

tests/test_output_dir.py

@@ -0,0 +1,19 @@
+"""Tests related to the --dir command line option."""
+import filecmp
+from pathlib import Path
+
+from cwlupgrader.main import main
+
+from .util import get_data
+
+
+def test_draft3_workflow(tmp_path: Path) -> None:
+    """Confirm that --dir works when the directory doesn't exist yet."""
+    out_dir = tmp_path / "new"
+    main([f"--dir={out_dir}", "--v1-only", get_data("testdata/draft-3/wf.cwl")])
+    result = filecmp.cmp(
+        get_data("testdata/v1.0/wf.cwl"),
+        out_dir / "wf.cwl",
+        shallow=False,
+    )
+    assert result

tests/util.py

@@ -1,10 +1,6 @@
 import os
 
-from pkg_resources import (
-    Requirement,
-    ResolutionError,
-    resource_filename,
-)
+from pkg_resources import Requirement, ResolutionError, resource_filename
 
 
 def get_data(filename: str) -> str: