Get testdata using checkout action

.github/workflows/main.yml

@@ -23,7 +23,13 @@ jobs:
             qt-version: ""
             numpy-version: ""
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Checkout test-data
+      uses: actions/checkout@v2
+      with:
+        repository: pyqtgraph/test-data
+        path: .pyqtgraph/test-data
     - name: Setup Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:

pyqtgraph/tests/image_testing.py

@@ -469,7 +469,10 @@ def getTestDataRepo():
     """
     global testDataTag
 
-    dataPath = os.path.join(os.path.expanduser('~'), '.pyqtgraph', 'test-data')
+    if os.environ["CI"]:
+        dataPath = os.path.join(os.environ["GITHUB_WORKSPACE"], '.pyqtgraph', 'test-data')
+    else:
+        dataPath = os.path.join(os.path.expanduser('~'), '.pyqtgraph', 'test-data')
     gitPath = 'https://github.com/pyqtgraph/test-data'
     gitbase = gitCmdBase(dataPath)