Merge lp:~sylvain-pineau/checkbox/fix-1475539 into lp:checkbox

[Sylvain Pineau]

Fixes the linked bug

[Zygmunt Krynicki (zyga)]

+1, Whee for having after :)

review: Approve

=== modified file 'providers/plainbox-provider-sru/units/sru.pxu'
--- providers/plainbox-provider-sru/units/sru.pxu	2016-01-27 03:13:03 +0000
+++ providers/plainbox-provider-sru/units/sru.pxu	2016-02-05 14:10:15 +0000
@@ -16,8 +16,8 @@
 plugin: attachment
 category_id: 2013.com.canonical.plainbox::graphics
 id: screenshot_opencv_validation.jpg
-depends: graphics/screenshot_opencv_validation
-command: base64 ${PLAINBOX_SESSION_SHARE}/screenshot_opencv_validation.jpg
+after: graphics/screenshot_opencv_validation
+command: [ -f ${PLAINBOX_SESSION_SHARE}/screenshot_opencv_validation.jpg ] && base64 ${PLAINBOX_SESSION_SHARE}/screenshot_opencv_validation.jpg
 _description: Attaches the screenshot captured in graphics/screenshot_opencv_validation.
 _summary: Attach the screenshot captured for the automatically validated screenshot test