Show coverage reports in travis-ci builds

Ideally we would extract that report and post it somewhere.  That is
left as future work.

Signed-off-by: Niels Thykier <niels@thykier.net>

.travis.yml

@@ -2,19 +2,21 @@ language: c
 sudo: required
 dist: trusty
 before_install:
-    # maybe add php ppa to provide sufficient pkg-php-tools
-    # - sudo add-apt-repository -y ppa:ondrej/php5
     # update package list
     - sudo apt-get update -qq
     - git clone https://anonscm.debian.org/git/collab-maint/britney2-tests.git britney2-tests
     - git clone https://anonscm.debian.org/git/collab-maint/britney-tests-live-data.git britney2-tests/live-data
+    - rm -f .coverage
 
 install:
     # install build dependencies
-    - sudo apt-get install -qq --no-install-recommends python3 python3-apt python3-yaml rsync libclass-accessor-perl
+    - sudo apt-get install -qq --no-install-recommends python3 python3-apt python3-yaml python3-coverage rsync libclass-accessor-perl
 
 script:
-    - britney2-tests/bin/runtests ./britney.py britney2-tests/t test-out
+    - britney2-tests/bin/runtests ./ci/britney-coverage.sh britney2-tests/t test-out
     - britney2-tests/bin/runtests ./britney.py britney2-tests/live-data test-out-live-data
+after_success:
+  - python3-coverage report
+  - python3-coverage report -m
 #notifications:
 #  email: false

ci/britney-coverage.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# This script is used on (e.g.) Travis CI to collect coverage
+
+dir=$(dirname "$(dirname "$0")")
+exec python3-coverage run --omit '*/yaml/*.py' --branch --append "$dir/britney.py" "$@"