Install pytest-faulthandler for py27 and add timeout

.travis.yml

@@ -64,6 +64,11 @@ install:
     - pip install pytest-xdist # multi-thread pytest
     - pip install pytest-cov # add coverage stats
 
+    # faulthandler support not built in to pytest for python 2.7
+    - if [ "${PYTHON}" == "2.7" ]; then
+        pip install pytest-faulthandler;
+      fi;
+
     # Debugging helpers
     - uname -a
     - cat /etc/issue
@@ -139,7 +144,7 @@ script:
 
     # Run unit tests
     - start_test "unit tests";
-      PYTHONPATH=. pytest --cov pyqtgraph -sv;
+      PYTHONPATH=. pytest --cov pyqtgraph -sv -o faulthandler_timeout=15;
       check_output "unit tests";
     - echo "test script finished. Current directory:"
     - pwd

azure-test-template.yml

@@ -99,6 +99,10 @@ jobs:
         pip install $(qt.bindings) numpy scipy pyopengl pytest six coverage
       fi
       pip install pytest-xdist pytest-cov
+      if [ $(python.version) == "2.7" ]
+      then
+        pip install pytest-faulthandler
+      fi
     displayName: "Install Dependencies"
   
   - bash: |
@@ -170,7 +174,8 @@ jobs:
       # echo "https://dev.azure.com/pyqtgraph/pyqtgraph/_apis/build/builds/$(Build.BuildId)/artifacts?artifactName=Screenshots&api-version=5.0"
       pytest . -sv \
         --junitxml=junit/test-results.xml \
-        -n 1 --cov pyqtgraph --cov-report=xml --cov-report=html
+        -n 1 --cov pyqtgraph --cov-report=xml --cov-report=html \
+        -o faulthandler_timeout=15
     displayName: 'Unit tests' 
     env:
       AZURE: 1