Testing on multiple operating systems with travis (#90)

* multiple os travis

* add coincbc via conda-forge

* switch to glpk

* circumvent windows subfolder snakemake path issue
cf. snakemake/snakemake/#46

* travis: skip solving for windows

.travis.yml

@@ -1,33 +1,25 @@
-language: python
+os: 
+  - windows
+  - linux
+  - osx
 
-python:
-  - "3.7"
+language: bash
 
-install:
-  # install system utilities
-  - sudo apt-get update --fix-missing
-  - sudo apt-get install -yq --no-install-recommends curl bzip2 xz-utils git ca-certificates coinor-cbc
-  
+before_install:
   # install conda
-  # https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/use-conda-with-travis-ci.html
-  - wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
-  - bash miniconda.sh -b -p $HOME/miniconda
-  - source "$HOME/miniconda/etc/profile.d/conda.sh"
-  - hash -r
-  - conda config --set always_yes yes --set changeps1 no
-  - conda update -q conda
-  - conda info -a
+  - wget https://raw.githubusercontent.com/trichter/conda4travis/latest/conda4travis.sh -O conda4travis.sh
+  - source conda4travis.sh
   
   # install conda environment
   - conda env create -f ./environment.yaml
   - conda activate pypsa-eur
   
   # install open-source solver
-  - conda install -c conda-forge ipopt
+  - conda install -c conda-forge ipopt glpk
 
 script:
   - cp ./test/config.test1.yaml ./config.yaml
   - snakemake
-  - snakemake results/networks/elec_s_6_lcopt_Co2L-24H.nc
+  - if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then snakemake solve_all_elec_networks; fi
   - rm -rf resources/*.nc resources/*.geojson resources/*.h5 networks results
   # could repeat for more configurations in future

config.tutorial.yaml

@@ -8,7 +8,7 @@ scenario:
   sectors: [E]
   simpl: ['']
   ll: ['copt']
-  clusters: [2,6]
+  clusters: [5]
   opts: [Co2L-24H]
 
 countries: ['DE'] 
@@ -158,7 +158,7 @@ solving:
     clip_p_max_pu: 0.01
     #nhours: 10
   solver:
-    name: ipopt
+    name: glpk
   # solver:
     # name: gurobi
     # threads: 4

test/config.test1.yaml

@@ -9,7 +9,7 @@ scenario:
   simpl: ['']
   ll: ['copt']
   clusters: [5]
-  opts: [Co2L-24H, 24H]
+  opts: [Co2L-24H]
 
 countries: ['DE'] 
 
@@ -158,7 +158,7 @@ solving:
     clip_p_max_pu: 0.01
     #nhours: 10
   solver:
-    name: cbc
+    name: glpk
   # solver:
     # name: gurobi
     # threads: 4