Add --caching option (off by default)

[jwodder]

Closes #103.

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (fca996a) 90.93% compared to head (ced4a78) 90.72%.

Files	Patch %	Lines
datalad_fuse/fsspec.py	70.00%	3 Missing ⚠️
datalad_fuse/fsspec_cache_clear.py	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #104      +/-   ##
==========================================
- Coverage   90.93%   90.72%   -0.22%     
==========================================
  Files          10       10              
  Lines         596      604       +8     
==========================================
+ Hits          542      548       +6     
- Misses         54       56       +2     

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[yarikoptic]

Great, thank you! could you please

• look into why benchmarking installation fails?
• also add parametrize to e.g. test_fuse on caching so we generally test both implementations?

[jwodder]

@yarikoptic Done.

[yarikoptic]

do you have ideas why codecov claims that we are loosing now coverage of the cache-clear?
https://app.codecov.io/gh/datalad/datalad-fuse/pull/104/blob/datalad_fuse/fsspec_cache_clear.py

[jwodder]

I don't know. It doesn't appear we ever tested that command to begin with.

[yarikoptic]

indeed... odd... I reran with this patch and did not spot traceback from being printed :-/

diff --git a/datalad_fuse/fsspec_cache_clear.py b/datalad_fuse/fsspec_cache_clear.py
index 60fcfbb..10d726b 100644
--- a/datalad_fuse/fsspec_cache_clear.py
+++ b/datalad_fuse/fsspec_cache_clear.py
@@ -1,3 +1,5 @@
+import sys
+import traceback
 from typing import Any, Dict, Iterator, Optional
 
 from datalad.distribution.dataset import (
@@ -42,6 +44,7 @@ class FsspecCacheClear(Interface):
     def __call__(
         dataset: Optional[Dataset] = None, recursive: bool = False
     ) -> Iterator[Dict[str, Any]]:
+        traceback.print_stack(file=sys.stderr)
         ds = require_dataset(
             dataset, purpose="clear fsspec cache", check_installed=True
         )