TEST: Test fallback behavior of copyfile

Attempt to copy and link files from POSIX to FAT, verify we always copy
without throwing errors

Author: effigies

nipype/utils/tests/test_filemanip.py

@@ -5,7 +5,7 @@
 import os
 from tempfile import mkstemp, mkdtemp
 
-from nipype.testing import assert_equal, assert_true, assert_false
+from nipype.testing import assert_equal, assert_true, assert_false, TempFATFS
 from nipype.utils.filemanip import (save_json, load_json,
                                     fname_presuffix, fnames_presuffix,
                                     hash_rename, check_forhash,
@@ -167,6 +167,27 @@ def test_linkchain():
     os.unlink(orig_hdr)
 
 
+def test_copyfallback():
+    if os.name is not 'posix':
+        return
+    orig_img, orig_hdr = _temp_analyze_files()
+    pth, imgname = os.path.split(orig_img)
+    pth, hdrname = os.path.split(orig_hdr)
+    with TempFATFS() as fatdir:
+        tgt_img = os.path.join(fatdir, imgname)
+        tgt_hdr = os.path.join(fatdir, hdrname)
+        for copy in (True, False):
+            for use_hardlink in (True, False):
+                copyfile(orig_img, tgt_img, copy=copy,
+                         use_hardlink=use_hardlink)
+                yield assert_true, os.path.exists(tgt_img)
+                yield assert_true, os.path.exists(tgt_hdr)
+                yield assert_false, os.path.islink(tgt_img)
+                yield assert_false, os.path.islink(tgt_hdr)
+                yield assert_false, os.path.samefile(orig_img, tgt_img)
+                yield assert_false, os.path.samefile(orig_hdr, tgt_hdr)
+
+
 def test_filename_to_list():
     x = filename_to_list('foo.nii')
     yield assert_equal, x, ['foo.nii']