Get coverage/coveralls working in Travis

.coveragerc

@@ -0,0 +1,16 @@
+#
+# .coveragerc to control coverage.py
+#
+
+[run]
+branch = True
+omit =
+    test*.py
+    setup.py
+
+
+[report]
+exclude_lines =
+    pragma: no cover
+    def __repr__
+    if __name__ == .__main__.:

.travis.yml

@@ -13,6 +13,7 @@ sudo: false
 
 env:
   - TEST_TARGET=default
+  - TEST_TARGET=default COVERAGE=true
   - TEST_TARGET=default TEST_MINIMAL=true
   - TEST_TARGET=coding
   - TEST_TARGET=example
@@ -59,6 +60,7 @@ install:
         conda install --quiet --file conda-requirements.txt;
       fi
     fi
+  - pip install coveralls
 
   - PREFIX=$HOME/miniconda/envs/$ENV_NAME
 
@@ -101,11 +103,18 @@ install:
 
 # iris
   - python setup.py --quiet --with-unpack build
-  - python setup.py --quiet --with-unpack install
+  - python setup.py --quiet --with-unpack install --user
 
 script:
   - if [[ $TEST_TARGET == 'default' ]]; then
-      python -m iris.tests.runner --default-tests --system-tests --print-failed-images;
+      if [[ $COVERAGE == true ]]; then
+        SITECUSTOMIZE=$PREFIX/lib/python$TRAVIS_PYTHON_VERSION/site-packages/sitecustomize.py;
+        echo 'import coverage; coverage.process_startup()' > "$SITECUSTOMIZE";
+        export COVERAGE_PROCESS_START="$PWD/.coveragerc";
+        coverage run --concurrency=multiprocessing -pm iris.tests.runner --default-tests --system-tests --print-failed-images;
+      else
+        python -m iris.tests.runner --default-tests --system-tests --print-failed-images;
+      fi
     fi
   - if [[ $TEST_TARGET == 'example' ]]; then
       python -m iris.tests.runner --example-tests --print-failed-images;
@@ -128,3 +137,8 @@ script:
   - if [[ $TEST_TARGET == 'coding' ]]; then
       python setup.py test --coding-tests;
     fi
+after_success:
+  - if [[ $COVERAGE == true ]]; then
+      coverage combine;
+      coveralls;
+    fi

README.md

@@ -3,6 +3,7 @@ Iris
 
 [![Build Status](https://api.travis-ci.org/repositories/SciTools/iris.svg?branch=master)](http://travis-ci.org/SciTools/iris/branches)
 [![DOI](https://zenodo.org/badge/doi/10.5281/zenodo.51860.svg)](http://dx.doi.org/10.5281/zenodo.51860)
+[![Coverage Status](https://coveralls.io/repos/github/SciTools/iris/badge.svg?branch=master)](https://coveralls.io/github/SciTools/iris?branch=master)
 
 (C) British Crown Copyright 2010 - 2015, Met Office
 

conda-requirements.txt

@@ -9,7 +9,7 @@ netcdf4
 numpy
 pyke
 udunits2
-cf_units
+cf_units<1.1.1
 
 # Iris build dependencies
 setuptools