Sync travis.yml with keras. (keras-team#333)

* Sync travis.yml with keras.

* Removed pil

* Removed trash file

.coveragerc

@@ -11,3 +11,7 @@ exclude_lines =
     if original_keras_version == '1':
 
 show_missing = True
+omit =
+    keras_contrib/backend/theano_backend.py
+    keras_contrib/backend/tensorflow_backend.py
+    keras_contrib/backend/cntk_backend.py

.travis.yml

@@ -1,9 +1,12 @@
 sudo: required
 dist: trusty
 language: python
+cache:
+  directories:
+    - $HOME/.theano
 matrix:
     include:
-        - python: 2.7
+        - python: 3.6
           env: KERAS_BACKEND=tensorflow TEST_MODE=PEP8
         - python: 2.7
           env: KERAS_BACKEND=tensorflow
@@ -34,51 +37,37 @@ install:
   # Useful for debugging any issues with conda
   - conda info -a
 
-  - conda create -q -n test-environment python=$TRAVIS_PYTHON_VERSION pytest pandas
+  - travis_retry conda create -q -n test-environment python=$TRAVIS_PYTHON_VERSION
   - source activate test-environment
-  - pip install --only-binary=numpy,scipy numpy nose scipy matplotlib h5py theano
-  - pip install keras_applications keras_preprocessing
-  - conda install mkl mkl-service
+  - travis_retry pip install --only-binary=numpy,scipy,pandas numpy nose scipy h5py theano pytest pytest-pep8 pandas --progress-bar off
+  - pip install keras==2.2.4 --progress-bar off
 
   # set library path
   - export LD_LIBRARY_PATH=$HOME/miniconda/envs/test-environment/lib/:$LD_LIBRARY_PATH
 
-  # install PIL for preprocessing tests
-  - if [[ "$TRAVIS_PYTHON_VERSION" == "2.7" ]]; then
-      conda install pil;
-    elif [[ "$TRAVIS_PYTHON_VERSION" == "3.6" ]]; then
-      conda install Pillow;
+  - if [[ "$KERAS_BACKEND" == "theano" ]]; then
+      travis_retry conda install -q mkl mkl-service
     fi
 
-  - pip install -e .[tests]
+  - pip install -e .[tests] --progress-bar off
 
   # install TensorFlow (CPU version).
-  - pip install tensorflow==1.7
-
+  - pip install tensorflow==1.9 --progress-bar off
+  
   # install cntk
-  - if [[ "$TRAVIS_PYTHON_VERSION" == "2.7" ]]; then
-      pip install https://cntk.ai/PythonWheel/CPU-Only/cntk-2.5.1-cp27-cp27mu-linux_x86_64.whl;
-    elif [[ "$TRAVIS_PYTHON_VERSION" == "3.6" ]]; then
-      pip install https://cntk.ai/PythonWheel/CPU-Only/cntk-2.5.1-cp36-cp36m-linux_x86_64.whl;
+  - if [[ "$KERAS_BACKEND" == "cntk" ]] || [[ "$TEST_MODE" == "PEP8" ]]; then
+      ./.travis/install_cntk.sh;
     fi
 
-  # install pydot for visualization tests
-  - conda install pydot graphviz
+  # Remove the current backend from the coverage exclusion.
+  - sed -i "\/keras\/backend\/${KERAS_BACKEND}_backend.py/d" .coveragerc
 
   # detect whether core files are changed or not
   - export CORE_CHANGED=False;
   - for entry in `git diff --name-only HEAD~1`; do if [[ "$entry" == "keras/backend/"* ]] || [[ "$entry" == "keras/engine/"* ]] || [[ "$entry" == "keras/layers/"* ]]; then export CORE_CHANGED=True; fi; done
   - export APP_CHANGED=False;
   - for entry in `git diff --name-only HEAD~1`; do if [[ "$entry" == "keras/applications/"* ]]; then export APP_CHANGED=True; fi; done
 
-  #install open mpi
-  - rm -rf ~/mpi
-  - mkdir ~/mpi
-  - pushd ~/mpi
-  - wget http://cntk.ai/PythonWheel/ForKeras/depends/openmpi_1.10-3.zip
-  - unzip ./openmpi_1.10-3.zip
-  - sudo dpkg -i openmpi_1.10-3.deb
-  - popd
 
 # command to run tests
 script:

.travis/install_cntk.sh

@@ -0,0 +1,11 @@
+set -e
+pip install cntk
+
+# open mpi is needed for cntk
+rm -rf ~/mpi
+mkdir ~/mpi
+pushd ~/mpi
+wget http://cntk.ai/PythonWheel/ForKeras/depends/openmpi_1.10-3.zip
+unzip ./openmpi_1.10-3.zip
+sudo dpkg -i openmpi_1.10-3.deb
+popd