Add xdist to image compare (#266)

Author: cvanelteren

.github/workflows/build-ultraplot.yml

@@ -43,7 +43,7 @@ jobs:
 
       - name: Test Ultraplot
         run: |
-          pytest --cov=ultraplot --cov-branch --cov-report term-missing --cov-report=xml ultraplot
+          pytest -n auto --cov=ultraplot --cov-branch --cov-report term-missing --cov-report=xml ultraplot
 
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v5
@@ -76,14 +76,14 @@ jobs:
           git fetch origin ${{ github.event.pull_request.base.sha }}
           git checkout ${{ github.event.pull_request.base.sha }}
           python -c "import ultraplot as plt; plt.config.Configurator()._save_yaml('ultraplot.yml')"
-          pytest -W ignore --mpl-generate-path=baseline --mpl-default-style="./ultraplot.yml"
+          pytest -n auto -W ignore --mpl-generate-path=baseline --mpl-default-style="./ultraplot.yml"
           git checkout ${{ github.sha }}  # Return to PR branch
 
       - name: Image Comparison Ultraplot
         run: |
           mkdir -p results
           python -c "import ultraplot as plt; plt.config.Configurator()._save_yaml('ultraplot.yml')"
-          pytest -W ignore --mpl --mpl-baseline-path=baseline --mpl-generate-summary=html --mpl-results-path=./results/ --mpl-default-style="./ultraplot.yml" --store-failed-only ultraplot/tests
+          pytest -n auto -W ignore --mpl --mpl-baseline-path=baseline --mpl-generate-summary=html --mpl-results-path=./results/ --mpl-default-style="./ultraplot.yml" --store-failed-only ultraplot/tests
 
       # Return the html output of the comparison even if failed
       - name: Upload comparison failures

environment.yml

@@ -2,31 +2,32 @@ name: ultraplot-dev
 channels:
   - conda-forge
 dependencies:
-  - python>=3.10,<3.14
-  - numpy
-  - matplotlib>=3.9
+  - basemap >=1.4.1
   - cartopy
-  - xarray
-  - seaborn
+  - jupyter
+  - jupytext
+  - matplotlib>=3.9
+  - nbsphinx
+  - networkx
+  - numpy
   - pandas
+  - pint
+  - pip
+  - pre-commit
+  - pyarrow
   - pytest
-  - pytest-mpl
   - pytest-cov
-  - jupyter
-  - pip
-  - pint
+  - pytest-mpl
+  - pytest-xdist
+  - python>=3.10,<3.14
+  - seaborn
   - sphinx
-  - nbsphinx
-  - jupytext
-  - sphinx-copybutton
   - sphinx-autoapi
   - sphinx-automodapi
+  - sphinx-copybutton
+  - sphinx-design
   - sphinx-rtd-theme
   - typing-extensions
-  - basemap >=1.4.1
-  - pre-commit
-  - sphinx-design
-  - networkx
-  - pyarrow
+  - xarray
   - pip:
       - git+https://github.com/ultraplot/UltraTheme.git