snap info gets confused if there is a directory of the same name

[Omer Akram]

I have the latest snapd installed and I just found a weird behavior, whenever I try to run `snap info` command while in a location that contains a directory/file of the same name, the command line gets confused

```
om26er@chaotic:~$ ls
Android deskconnd-sock-dir deskconn.keys Desktop Documents Downloads Music Pictures Public scm snap Templates Videos
om26er@chaotic:~$ snap info Desktop
error: no snap found for "Desktop/"
```

om26er@chaotic:~$ apt-cache policy snapd
snapd:
  Installed: 2.41+19.10.1
  Candidate: 2.41+19.10.1
  Version table:
 *** 2.41+19.10.1 500
        500 http://archive.ubuntu.com/ubuntu eoan/main amd64 Packages
        100 /var/lib/dpkg/status

[John Lenton (chipaca)]

actually, at first I thought this was the bug I recently fixed in master about 'snap info' getting confused by a directory existing with the same name as a snap in the store.

The issue you seem to be trying to report is different: it's snap info behaving as expected.

You asked it for information about a directory, that isn't a snap. What error did you expect to get?

[John Lenton (chipaca)]

Right, so this does look like a regression that's slipped in at some point.

How to reproduce:

1. find a snap in the store, see its info:

$ snap info slow-snap
name: slow-snap
...

2. create a directory with the same name as the snap, and try again:

$ mkdir slow-snap
$ snap info slow-snap
error: no snap found for "slow-snap/"

I'll look into it.

[John Lenton (chipaca)]

Ok, so this is fixed in 2.42pre already, by https://github.com/snapcore/snapd/pull/7404.

We're not testing for this actual scenario though, so I'll add a test for it.

[John Lenton (chipaca)]

Hah! We _are_ testing for it, because the test I added in that PR covers this case as well.

All done! Very efficient of me, I must say.