matplotlib · tacaswell · Nov 2, 2018 · Oct 24, 2018 · Oct 24, 2018 · Oct 25, 2018
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
@@ -0,0 +1,71 @@
+# Python package
+# Create and test a Python package on multiple Python versions.
+# Add steps that analyze code, save the dist with the build record, publish to a PyPI-compatible index, and more:
+# https://docs.microsoft.com/azure/devops/pipelines/languages/python
+
+jobs:
+
+- job: 'Test'
+  pool:
+    vmImage: 'Ubuntu 16.04'
+  strategy:
+    matrix:
+      Python35:
+        python.version: '3.5'
+      Python36:
+        python.version: '3.6'
+      Python37:
+        python.version: '3.7'
+    maxParallel: 4
+
+  steps:
+  - task: UsePythonVersion@0
+    inputs:
+      versionSpec: '$(python.version)'
+      architecture: 'x64'
+
+  - script: |
+
+      python -m pip install --upgrade pip
+      pip install -r requirements/testing/travis_all.txt -r requirements/testing/travis36.txt
+      # GUI toolkits are pip-installable only for some versions of Python so
+      # don't fail if we can't install them.  Make it easier to check whether the
+      # install was successful by trying to import the toolkit (sometimes, the
+      # install appears to be successful but shared libraries cannot be loaded at
+      # runtime, so an actual import is a better check).
+      python -mpip install --upgrade cairocffi>=0.8 pgi>=0.0.11.2 &&
+        python -c 'import pgi as gi; gi.require_version("Gtk", "3.0"); from pgi.repository import Gtk' &&
+        echo 'pgi is available' ||
+        echo 'pgi is not available'
+      python -mpip install --upgrade pyqt5 &&
+        python -c 'import PyQt5.QtCore' &&
+        echo 'PyQt5 is available' ||
+        echo 'PyQt5 is not available'
+      python -mpip install --upgrade \
+        -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-14.04 \
+        wxPython &&
+        python -c 'import wx' &&
+        echo 'wxPython is available' ||
+        echo 'wxPython is not available'
+
+    displayName: 'Install dependencies'
+  - script: |
+
+      export DISPLAY=:99.0
+      sh -e /etc/init.d/xvfb start
+    displayName: 'start x server'
+
+  - script: pip install -ve .
+    displayName: "Install self"
+
+  - script: |
+
+      pip install pytest
+      pytest --junitxml=junit/test-results.xml
+    displayName: 'pytest'
+
+  - task: PublishTestResults@2
+    inputs:
+      testResultsFiles: '**/test-results.xml'
+      testRunTitle: 'Python $(python.version)'
+    condition: succeededOrFailed()
diff --git a/lib/matplotlib/tests/test_backend_bases.py b/lib/matplotlib/tests/test_backend_bases.py
@@ -57,6 +57,7 @@ def test_get_default_filename(tmpdir):
 
 @pytest.mark.backend('pdf')
 def test_non_gui_warning():
+    plt.close('all')
     plt.subplots()
     with pytest.warns(UserWarning) as rec:
         plt.show()