This method allows the creation of files inside a newly created ISO
file.

For now, the API is kept as simple as possible, and as such, there are
limitations involving creating directories (and files in other
directories than the root dir), mode for files, etc.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

This method allows the creation of brand new ISO files, written to
disk at close() time.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

The goal is to make the opening of files separate from the
instantiation, because that will allow for the different "open"
approach of opening a new ISO file in write mode.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

So that users of the `iso9660` utility function can choose a backend
that matches specific requirements.

This is intended to be used to add create/write features to some
backends, that will allow the creation of ISO files, without mandating
all backends to be implement those.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

The tests was done mocking the real output of `/proc/buddyinfo`. To make
it easier the process to get the buddy info content was extracted for a
specific function that actually only wraps the open call. This way we
can mock this function return only instead of try mock the builtin open
function.
Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

PyYAML is the first failure on Travis' Python Nightly jobs.  The
version we're using is ancient, dating from Mar 27, 2014.  Let's
update that and see how the nightly job goes.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

The standard library platform.dist function has been deprecated since
2.6, and has now been removed in 3.8.  Since we used as mostly a
fallback probe (other more specific ones are present), it seems safe
to remove this one, and probably wiser to remove it "sooner" than
"even later".

Reference: https://trello.com/c/f2g8BUSt
Reference: https://docs.python.org/2/library/platform.html#platform.distSigned-off-by: NCleber Rosa <crosa@redhat.com>

Reference: https://trello.com/c/Ohh7Q6qjSigned-off-by: NCaio Carrara <ccarrara@redhat.com>

There was an else on while without break. That has no meaning because
since while has no break, the else block will be always executed. This
change removes the else statement and keeps the block.
Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Reference: https://trello.com/c/Ohh7Q6qjSigned-off-by: NCaio Carrara <ccarrara@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

This started as a hunt for "foo" doesn't exist in module "bar" errors
in "inspekt lint" checks.  It looks like it fixes those issues, but
even if it doesn't, it's a valid change in itself.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Sometimes the URL used is a link to the content that gets updated
between jobs.  When comparing jobs, it's unclear if we're downloading
the same file or another one.

Let's print the available information we have, such as the content
length, and the creation/modification dates.

Reference: https://trello.com/c/wQ8ir7xASigned-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Which is used for the (usually temporary) snapshot image.  By default,
it's kept in the on the same directory as the base image.  When
downloading the base image into a test's cache_dir, it makes sense to
keep the snapshot out of the cache_dir, usually in the test's workdir.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

This check is based on a number of packages that are either Python 2
only and/or are not available on most distros.  And, pylint itself
supports this type of check.

Reference: https://trello.com/c/rfSAXdyiSigned-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

There's some duplicated code dealing with the lzma module presence and
consequently lzma handling capabilities on avocado.utils.archive.

Also, it makes a lot more sense to have that functionality there.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Sometimes multiple links to the same OS image file version will exist
on an index web page.  For instance, on openSUSE download server,
a folder icon, and the name of the version itself, appear side
by side and point to the same version:

               Name                    Last Modified  Size  Metadata
 [parent_icon] Parent Directory                       -
 [folder_icon] Leap_15.0/              08-Feb-2018    -
 ...

Let's make the set of found patterns unique, and not one per link.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Unfortunately, the vmimage module doesn't have any unittests, so the
compatibility with Python 3 has not been tested.  Let's fix the
obvious compatiblity issues and add the most simple test possible
to at least load the utility module on Python 3.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

While the readability aspect is debatable, this is IMO easier to
grasp than a multiline condition.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Let's give a little more info, and split the parameter type into its
own docstring line.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Another simple refactor, because it makes sense to have related
attributes set together instead of scattered all over the place.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Let's move the logging map definitions to a class scope, and simplify
the setting of the loglevel attribute.

In theory, even though it's not supported now, this should also allow
code that define their own jobs to easily customize the logging level.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

When `make develop` is run egg-info directories are created. We
shouldn't add them to version control, so this commit adds the proper
entry to gitignore file.
Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

E1111 error happens when a function which doesn't return is used to
assign to something. In this particular case the unittest.TextTestResut
stopTest method doesn't return and its result is being assigned to a
variable. This behaviour makes pylint fails with E1111 error. This
commit just don't assign the result of super() call and also keeps the
super class method behavior (not returing).
Signed-off-by: NCaio Carrara <ccarrara@redhat.com>

Signed-off-by: NCleber Rosa <crosa@redhat.com>

Python 3.7 introduced a new way to add breakpoint on the code. It was
added the built-in breackpoint function. There was couple of places
where the word breakpoint was being redefined making pylint execution
fail with W0622 error (Redefining built-in). This commit replaces
'breakpoint' with 'break_point' in these places.
Signed-off-by: NCaio Carrara <ccarrara@redhat.com>