adding test to gitlab-ci

.gitlab-ci.yml

-pages:
-  image: julia:1.4
-  stage: deploy
+.test_template: &test_definition
+  # Uncomment below if you would like to run the tests on specific references
+  # only, such as the branches `master`, `development`, etc.
+  # only:
+  #   - master
+  #   - development
   script:
-    - apt-get update -qq && apt-get install -y git  # needed by Documenter
-    - julia -e 'using Pkg; Pkg.add(PackageSpec(path =pwd())); Pkg.build("ABMEv");'  # rebuild Julia (can be put somewhere else I'm sure
-    - julia -e 'using Pkg; import ABMEv; Pkg.add("Documenter")'  # install Documenter
-    - julia --color=yes docs/make.jl  # make documentation
-    - mv docs/build public  # move to the directory picked up by Gitlab pages
-  artifacts:
-    paths:
-      - public
-  only:
-    - master
+    # Let's run the tests. Substitute `coverage = false` below, if you do not
+    # want coverage results.
+    - julia -e 'using Pkg; Pkg.add(PackageSpec(path =pwd())); Pkg.build("ABMEv"); Pkg.test("ABMEv"; coverage = true)'
+    # Comment out below if you do not want coverage results.
+    - julia -e 'using Pkg; Pkg.add("Coverage");
+      import ABMEv; cd(joinpath(dirname(pathof(ABMEv)), ".."));
+      using Coverage; cl, tl = get_summary(process_folder());
+      println("(", cl/tl*100, "%) covered")'
+
+# Name a test and select an appropriate image.
+# images comes from Docker hub
+test:0.7:
+  image: julia:0.7
+  <<: *test_definition
+
+test:1.0:
+  image: julia:1.0
+  <<: *test_definition
+
+## Below commented because gitlab.ethz.ch has disabled Pages feature
+# pages:
+#   image: julia:1.4
+#   stage: deploy
+#   script:
+#     - apt-get update -qq && apt-get install -y git  # needed by Documenter
+#     - julia -e 'using Pkg; Pkg.add(PackageSpec(path =pwd())); Pkg.build("ABMEv");'  # rebuild Julia (can be put somewhere else I'm sure
+#     - julia -e 'using Pkg; import ABMEv; Pkg.add("Documenter")'  # install Documenter
+#     - julia --color=yes docs/make.jl  # make documentation
+#     - mv docs/build public  # move to the directory picked up by Gitlab pages
+#   artifacts:
+#     paths:
+#       - public
+#   only:
+#     - master