Move development reqirements to dev-requirements.txt

In some cases, such as when working inside a virtual environment, it can
be desirable to install all dependencies for running tests using `pip`.
This is currently not possible since setuptools does not support
installing these dependencies in a virtual environment (by design).
(See https://stackoverflow.com/a/21003259.)

To circumvent this issue, move such requirements to
`dev-requirements.txt` file that can be used easily with
`pip install -r`. This also enables tests to be run directly using
`pytest`, which can be more convenient than `-addopts` approach when one
needs to add multiple options.

This will also be useful in creating better testuite images, and fix
some of the issues noticed in
https://gitlab.com/BuildStream/buildstream-docker-images/merge_requests/56.

1 files changed, 12 insertions, 0 deletions

diff --git a/dev-requirements.txt b/dev-requirements.txt
new file mode 100644
index 000000000..8b4834fa5
--- /dev/null
+++ b/dev-requirements.txt
@@ -0,0 +1,12 @@
+# Pin coverage to 4.2 for now, were experiencing
+# random crashes with 4.4.2
+coverage == 4.4.0
+pep8
+pytest >= 3.1.0
+pytest-cov >= 2.5.0
+pytest-datafiles
+pytest-env
+pytest-pep8
+pytest-pylint
+# Provide option to run tests in parallel, less reliable
+pytest-xdist