[Android] FoldersViewModelTest added

[Shivansh Saini]

vlc-android | branch: master | Shivansh Saini <shivanshs9 at gmail.com> | Wed Jul 10 05:51:19 2019 +0530| [7f46ed452560fb038ec39eccde7feb4409d74350] | committer: Geoffrey Métais

FoldersViewModelTest added

- Added getFolders logic in StubMedialibrary

Signed-off-by: Shivansh Saini <shivanshs9 at gmail.com>

> https://code.videolan.org/videolan/vlc-android/commit/7f46ed452560fb038ec39eccde7feb4409d74350
---

 .../medialibrary/stubs/StubDataSource.java         |   1 -
 .../videolan/medialibrary/stubs/StubFolder.java    |  10 ++
 .../medialibrary/stubs/StubMedialibrary.java       |  75 ++++++--
 .../vlc/viewmodels/mobile/FoldersViewModelTest.kt  | 197 +++++++++++++++++++++
 4 files changed, 264 insertions(+), 19 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/7f46ed452560fb038ec39eccde7feb4409d74350