Draft: importer: Add ability to verify copy and move operations

[oliv3r]

Description

To avoid corrupting files and worse, remove the original files (move), a quick check is added to ensure files are still in order.

On failure the crc is printed to aid in discovering if the problem was with the source (unlikely) or destination file. Using filecmp would only tell us of a miss-match, but making it harder to figure out why/where things fail.

Since beets import can be destructive (move), we want to be delicate here.

To Do

• Documentation. (If you've added a new command-line flag, for example, find the appropriate page under docs/ to describe it.)
• Changelog. (Add an entry to docs/changelog.rst to the bottom of one of the lists near the top of the document.)
• Tests. (Very much encouraged but not strictly required.)

[oliv3r]

Trying to figure out how to write a test for this; so any help would be greatly appreciated :)

But also being thrown about with NameError: name 'import_cmd_parser' is not defined both when running tox -e int but also just trying to run the application ...

[wisp3rwind]

But also being thrown about with NameError: name 'import_cmd_parser' is not defined both when running tox -e int but also just trying to run the application ...

It's a typo: import_cmd.parser vs. import_cmd_parser.

[oliv3r]

I taken it it's fixed on master so I van just rebase? :)

[wisp3rwind]

I taken it it's fixed on master so I van just rebase? :)

No, you made a typo when adding the new verify command, which is why the tests fail.