Merge pull request International-BMP-Database#177 from Geosyntec/fix-…

…img-comp-action

Fix img comparison action

.github/workflows/python-runtests-basic.yml

@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a variety of Python versions
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: Run unit tests (without image comparison)
+name: Run basic unit tests
 
 on:
   push:

.github/workflows/python-runtests-img-comp.yml

@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a variety of Python versions
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: Run unit tests (with image comparison)
+name: Run image comparison tests
 
 on:
   push:
@@ -13,16 +13,12 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: 3.8
-
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
+    - name: Set up Python 3.8
       uses: actions/setup-python@v2
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: 3.8
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -36,4 +32,5 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
+        export MPL_IMGCOMP_TOLERANCE=20
         python check_wqio.py --strict

wqio/tests/helpers.py

@@ -18,6 +18,10 @@
 import pytest
 
 
+def get_img_tolerance():
+    return int(os.environ.get("MPL_IMGCOMP_TOLERANCE", 15))
+
+
 def seed(func):
     """ Decorator to seed the RNG before any function. """