[MRG] Add more test scenarios to Azure pipeline (#790)

[MRG] Add more test scenarios to Azure pipeline

Author: betatim

azure-pipelines.yml

@@ -1,11 +1,52 @@
 # https://docs.microsoft.com/azure/devops/pipelines/ecosystems/python
 pool:
   vmImage: "ubuntu-16.04"
+strategy:
+  matrix:
+    lint:
+      REPO_TYPE: 'lint'
+      python_version: '3.6'
+    unit:
+      REPO_TYPE: 'unit'
+      python_version: '3.6'
+    base:
+      REPO_TYPE: 'base'
+      python_version: '3.6'
+    conda:
+      REPO_TYPE: 'conda'
+      python_version: '3.6'
+    pipfile:
+      REPO_TYPE: 'pipfile'
+      python_version: '3.6'
+    venv:
+      REPO_TYPE: 'venv'
+      python_version: '3.6'
+    stencila_r:
+      REPO_TYPE: 'stencila-r'
+      python_version: '3.6'
+    stencila_py:
+      REPO_TYPE: 'stencila-py'
+      python_version: '3.6'
+    julia:
+      REPO_TYPE: 'julia'
+      python_version: '3.6'
+    r:
+      REPO_TYPE: 'r'
+      python_version: '3.6'
+    nix:
+      REPO_TYPE: 'nix'
+      python_version: '3.6'
+    dockerfile:
+      REPO_TYPE: 'dockerfile'
+      python_version: '3.6'
+    external:
+      REPO_TYPE: 'external'
+      python_version: '3.6'
 
 steps:
 - task: UsePythonVersion@0
   inputs:
-    versionSpec: '3.6'
+    versionSpec: $(python_version)
 
 - script: |
    git config --global user.email "[email protected]"
@@ -19,8 +60,21 @@ steps:
   displayName: 'Install dev requirements'
 
 - script: pip install -e .
-  displayName: 'Install r2d'
+  displayName: 'Install repo2docker'
 
-# venv conda 
-- script: pytest --durations 10 --cov repo2docker -vs tests/unit
-  displayName: 'Run pytest'
+- script: pushd tests; pytest --durations 10 --cov repo2docker -v $(REPO_TYPE); popd
+  displayName: 'Run tests $(REPO_TYPE)'
+
+- script: |
+    # point to auto-lint-fix
+    if [[ "$REPO_TYPE" == "lint" ]]; then
+      echo "You can install pre-commit hooks to automatically run formatting"
+      echo "on each commit with:"
+      echo "    pre-commit install"
+      echo "or you can run by hand on staged files with"
+      echo "    pre-commit run"
+      echo "or after-the-fact on already committed files with"
+      echo "    pre-commit run --all-files"
+    fi
+  displayName: 'Help to debug linter errors'
+  condition: failed()