Refactor content app tests.

The tests uses pyfakefs to simulate a fake filesystem that is reused
over the content app tests.
Test coverage for the app is brought to 100%.

1 files changed, 1 insertions, 0 deletions

diff --git a/Pipfile b/Pipfile
index c2b87ab4..c51215b6 100644
--- a/Pipfile
+++ b/Pipfile
@@ -36,6 +36,7 @@ mccabe = "~=0.6.1"
 pep8-naming = "~=0.9"
 pre-commit = "~=2.1"
 unittest-xml-reporting = "~=3.0"
+pyfakefs = "~=4.4.0"
 
 [requires]
 python_version = "3.7"