Use a separate varaible for controlling tests

**What**
- add TEST_ENABLED build-arg to control if the tests are run or not.
  Should be easier to document and debug in the future.
- Copy the implementation to all of the python3 templates

Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>

Author: LucasRoesler

.gitignore

@@ -35,6 +35,15 @@ WORKDIR /home/app/
 USER root
 COPY function   function
 RUN chown -R app:app ./
+
+ARG TEST_COMMAND=tox
+ARG TEST_ENABLED=true
+RUN if [ "$TEST_ENABLED" == "false" ]; then \
+    echo "skipping tests";\
+    else \
+    eval "$TEST_COMMAND"; \
+    fi
+
 USER app
 
 ENV fprocess="python index.py"

template/python3-flask-armhf/Dockerfile

@@ -0,0 +1,10 @@
+from .handler import handle
+
+# Test your handler here
+
+# To disable testing, you can set the build_arg `TEST_ENABLED=false` on the CLI or in your stack.yml
+# https://docs.openfaas.com/reference/yaml/#function-build-args-build-args
+
+def test_handle():
+    # assert handle("input") == "input"
+    pass

template/python3-flask-armhf/function/handler_test.py

@@ -0,0 +1,41 @@
+# If you would like to disable
+# automated testing during faas-cli build,
+
+# Replace the content of this file with
+#   [tox]
+#   skipsdist = true
+
+# You can also edit, remove, or add additional test steps
+# by editing, removing, or adding new testenv sections
+
+
+# find out more about tox: https://tox.readthedocs.io/en/latest/
+[tox]
+envlist = lint,test
+skipsdist = true
+
+[testenv:test]
+deps =
+  flask
+  pytest
+  -rrequirements.txt
+commands =
+  # run unit tests with pytest
+  # https://docs.pytest.org/en/stable/
+  # configure by adding a pytest.ini to your handler
+  pytest
+
+[testenv:lint]
+deps =
+  flake8
+commands =
+  flake8 .
+
+[flake8]
+count = true
+max-line-length = 127
+max-complexity = 10
+statistics = true
+# stop the build if there are Python syntax errors or undefined names
+select = E9,F63,F7,F82
+show-source = true

template/python3-flask-armhf/function/tox.ini

@@ -1,3 +1,3 @@
 flask
 waitress
-
+tox==3.*

template/python3-flask-armhf/requirements.txt

@@ -42,6 +42,14 @@ USER root
 COPY function   function
 RUN chown -R app:app ./
 
+ARG TEST_COMMAND=tox
+ARG TEST_ENABLED=true
+RUN if [ "$TEST_ENABLED" == "false" ]; then \
+    echo "skipping tests";\
+    else \
+    eval "$TEST_COMMAND"; \
+    fi
+
 #configure WSGI server and healthcheck
 USER app
 

template/python3-flask-debian/Dockerfile

@@ -0,0 +1,10 @@
+from .handler import handle
+
+# Test your handler here
+
+# To disable testing, you can set the build_arg `TEST_ENABLED=false` on the CLI or in your stack.yml
+# https://docs.openfaas.com/reference/yaml/#function-build-args-build-args
+
+def test_handle():
+    # assert handle("input") == "input"
+    pass

template/python3-flask-debian/function/handler_test.py

@@ -0,0 +1,41 @@
+# If you would like to disable
+# automated testing during faas-cli build,
+
+# Replace the content of this file with
+#   [tox]
+#   skipsdist = true
+
+# You can also edit, remove, or add additional test steps
+# by editing, removing, or adding new testenv sections
+
+
+# find out more about tox: https://tox.readthedocs.io/en/latest/
+[tox]
+envlist = lint,test
+skipsdist = true
+
+[testenv:test]
+deps =
+  flask
+  pytest
+  -rrequirements.txt
+commands =
+  # run unit tests with pytest
+  # https://docs.pytest.org/en/stable/
+  # configure by adding a pytest.ini to your handler
+  pytest
+
+[testenv:lint]
+deps =
+  flake8
+commands =
+  flake8 .
+
+[flake8]
+count = true
+max-line-length = 127
+max-complexity = 10
+statistics = true
+# stop the build if there are Python syntax errors or undefined names
+select = E9,F63,F7,F82
+show-source = true

template/python3-flask-debian/function/tox.ini

@@ -1,3 +1,3 @@
 flask
 waitress
-
+tox==3.*

template/python3-flask-debian/requirements.txt

@@ -41,7 +41,8 @@ COPY function/   .
 RUN chown -R app:app ../
 
 ARG TEST_COMMAND=tox
-RUN if [ "x$TEST_COMMAND" = "xoff" ]; then \
+ARG TEST_ENABLED=true
+RUN if [ "$TEST_ENABLED" == "false" ]; then \
     echo "skipping tests";\
     else \
     eval "$TEST_COMMAND"; \