CircleCI: Add test runs for Python 2.7 and Python 3.5 (#161)

* Add test runs for Python 2.7 and Python 3.5

* Update Python 2.7 venv setup

* Python 2.7 specific fixes for CircleCI

* Moar 2.7 work-arounds

* Remove venv before installing

* Update job names

Author: pglombardo

.circleci/config.yml

@@ -4,7 +4,107 @@
 #
 version: 2
 jobs:
-  build-test-python36:
+  python27:
+    docker:
+      - image: circleci/python:2.7.16
+
+      # Specify service dependencies here if necessary
+      # CircleCI maintains a library of pre-built images
+      # documented at https://circleci.com/docs/2.0/circleci-images/
+      - image: circleci/postgres:9.6.5-alpine-ram
+      - image: circleci/mysql:5.5.62-ram
+      - image: circleci/redis:5.0.4
+      - image: rabbitmq:3.5.4
+
+    working_directory: ~/repo
+
+    steps:
+      - checkout
+
+      # Download and cache dependencies
+      - restore_cache:
+          keys:
+            - v1-dependencies-{{ checksum "requirements.txt" }}
+            # fallback to using the latest cache if no exact match is found
+            - v1-dependencies-
+
+      - run:
+          name: install dependencies
+          command: |
+            rm -rf venv
+            export PATH=/home/circleci/.local/bin:$PATH
+            pip install --user -U pip setuptools virtualenv
+            virtualenv --python=python2.7 --always-copy venv
+            . venv/bin/activate
+            pip install -U pip
+            python setup.py install_egg_info
+            pip install -r requirements-test.txt
+
+      - save_cache:
+          paths:
+            - ./venv
+          key: v1-dependencies-{{ checksum "requirements.txt" }}
+
+      - run:
+          name: run tests
+          command: |
+            . venv/bin/activate
+            python runtests.py
+
+      - store_artifacts:
+          path: test-reports
+          destination: test-reports
+
+  python35:
+    docker:
+      - image: circleci/python:3.5.6
+
+      # Specify service dependencies here if necessary
+      # CircleCI maintains a library of pre-built images
+      # documented at https://circleci.com/docs/2.0/circleci-images/
+      - image: circleci/postgres:9.6.5-alpine-ram
+      - image: circleci/mysql:8.0.16
+      - image: circleci/redis:5.0.4
+      - image: rabbitmq:3.5.4
+
+    working_directory: ~/repo
+
+    steps:
+      - checkout
+
+      # Download and cache dependencies
+      - restore_cache:
+          keys:
+            - v1-dependencies-{{ checksum "requirements.txt" }}
+            # fallback to using the latest cache if no exact match is found
+            - v1-dependencies-
+
+      - run:
+          name: install dependencies
+          command: |
+            python -m venv venv
+            . venv/bin/activate
+            pip install -U pip
+            python setup.py install_egg_info
+            pip install -r requirements.txt
+            pip install -r requirements-test.txt
+
+      - save_cache:
+          paths:
+            - ./venv
+          key: v1-dependencies-{{ checksum "requirements.txt" }}
+
+      - run:
+          name: run tests
+          command: |
+            . venv/bin/activate
+            python runtests.py
+
+      - store_artifacts:
+          path: test-reports
+          destination: test-reports
+
+  python36:
     docker:
       - image: circleci/python:3.6.8
 
@@ -56,4 +156,6 @@ workflows:
   version: 2
   build:
     jobs:
-      - build-test-python36
+      - python27
+      - python35
+      - python36