CI: set up OSX and windows azure pipelines

Adds macOS and Windows builds to Azure Pipelines

Correct VM image name

Fix job names and remove extension reference

Add dependency installs for macOS and Ubuntu

Attempt to use libpng from nuget for Windows build

Ensures nuget is available on PATH

Author: zooba

azure-pipelines.yml

@@ -5,9 +5,9 @@
 
 jobs:
 
-- job: 'Test'
+- job: 'Linux_Test'
   pool:
-    vmImage: 'Ubuntu 16.04'
+    vmImage: ubuntu-16.04
   strategy:
     matrix:
       Python36:
@@ -17,31 +17,43 @@ jobs:
     maxParallel: 4
 
   steps:
-  - task: UsePythonVersion@0
-    inputs:
-      versionSpec: '$(python.version)'
-      architecture: 'x64'
+    - template: ci/azure-pipelines-steps.yml
+      parameters:
+        platform: ubuntu
+        installer: apt
 
-  - script: |
-      python -m pip install --upgrade pip
-      pip install -r requirements/testing/travis_all.txt -r requirements/testing/travis36.txt
-    displayName: 'Install dependencies'
-
-  - script: |
-      export MPLLOCALFREETYPE=1
-      pip install -ve .
-    displayName: "Install self"
+- job: 'Windows_Test'
+  pool:
+    vmImage: vs2017-win2016
+  strategy:
+    matrix:
+      Python36:
+        python.version: '3.6'
+      Python37:
+        python.version: '3.7'
+      PythonPreview:
+        python.version: 'Pre'
+    maxParallel: 4
 
-  - script: env
-    displayName: 'print env'
+  steps:
+    - template: ci/azure-pipelines-steps.yml
+      parameters:
+        platform: windows
+        installer: nuget
 
-  - script: |
-      env
-      PYTHONFAULTHANDLER=1 pytest --junitxml=junit/test-results.xml -raR --maxfail=50 --timeout=300 --durations=25 --cov-report= --cov=lib -n 2 --log-level=DEBUG
-    displayName: 'pytest'
+- job: 'macOS_Test'
+  pool:
+    vmImage: xcode9-macos10.13
+  strategy:
+    matrix:
+      Python36:
+        python.version: '3.6'
+      Python37:
+        python.version: '3.7'
+    maxParallel: 4
 
-  - task: PublishTestResults@2
-    inputs:
-      testResultsFiles: '**/test-results.xml'
-      testRunTitle: 'Python $(python.version)'
-    condition: succeededOrFailed()
+  steps:
+    - template: ci/azure-pipelines-steps.yml
+      parameters:
+        platform: macos
+        installer: brew

ci/azure-pipelines-steps.yml

@@ -0,0 +1,87 @@
+parameters:
+  platform: none
+  installer: none
+
+steps:
+- task: UsePythonVersion@0
+  inputs:
+    versionSpec: '$(python.version)'
+    architecture: 'x64'
+  displayName: 'Use Python $(python.version)'
+  condition: and(succeeded(), ne(variables['python.version'], 'Pre'))
+
+- task: stevedower.python.InstallPython.InstallPython@1
+  displayName: 'Use prerelease Python'
+  inputs:
+    prerelease: true
+  condition: and(succeeded(), eq(variables['python.version'], 'Pre'))
+
+- ${{ if eq(parameters.installer, 'nuget') }}:
+  - task: NuGetToolInstaller@0
+    displayName: 'Use latest available Nuget'
+
+  - script: |
+      nuget install libpng-msvc14-x64 -ExcludeVersion -OutputDirectory "$(build.BinariesDirectory)"
+      echo ##vso[task.setvariable variable=MPLBASEDIRLIST]win32_static;$(build.BinariesDirectory)\libpng-msvc14-x64\build\native
+      echo ##vso[task.setvariable variable=LIBDIR]%LIBDIR%;$(build.BinariesDirectory)\libpng-msvc14-x64\build\native\lib_release
+      echo ##vso[task.prependpath]$(build.BinariesDirectory)\libpng-msvc14-x64\build\native\bin_release
+    displayName: 'Install dependencies with nuget'
+
+- ${{ if eq(parameters.installer, 'brew') }}:
+  - script: |
+      brew install pkg-config ffmpeg imagemagick mplayer ccache
+    displayName: 'Install dependencies with brew'
+
+- ${{ if eq(parameters.installer, 'apt') }}:
+  - script: |
+      sudo apt-add-repository ppa:jonathonf/ffmpeg-3
+      sudo apt-get update
+      sudo apt-get install \
+        cm-super \
+        dvipng \
+        ffmpeg \
+        gdb \
+        gir1.2-gtk-3.0 \
+        graphviz \
+        inkscape \
+        libcairo2 \
+        libgeos-dev \
+        libgirepository-1.0.1 \
+        lmodern \
+        otf-freefont \
+        pgf \
+        texlive-fonts-recommended \
+        texlive-latex-base \
+        texlive-latex-extra \
+        texlive-latex-recommended \
+        texlive-xetex texlive-luatex
+    displayName: 'Install dependencies with apt'
+
+- script: |
+
+    python -m pip install --upgrade pip
+    pip install -r requirements/testing/travis_all.txt -r requirements/testing/travis36.txt
+
+  displayName: 'Install dependencies with pip'
+
+- script: |
+
+    pip install -ve .
+
+  displayName: "Install self"
+  env:
+    MPLLOCALFREETYPE: 1
+
+- script: env
+  displayName: 'print env'
+
+- script: |
+    env
+    PYTHONFAULTHANDLER=1 pytest --junitxml=junit/test-results.xml -raR --maxfail=50 --timeout=300 --durations=25 --cov-report= --cov=lib -n 2
+  displayName: 'pytest'
+
+- task: PublishTestResults@2
+  inputs:
+    testResultsFiles: '**/test-results.xml'
+    testRunTitle: 'Python $(python.version)'
+  condition: succeededOrFailed()