updating tests for multiple platforms

Author: shakedzy

.github/workflows/test_and_publish.yml

@@ -13,10 +13,11 @@ jobs:
     strategy:
       matrix:
         version: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
-    runs-on: ubuntu-latest
+        platform: ["ubuntu-latest", "macos-latest", "windows-latest"]
+    runs-on: ${{ matrix.platform }}
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python ${{ matrix.version }}
+      - name: Set up Python ${{ matrix.version }} on ${{ matrix.platform }}
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.version }}

.github/workflows/test_code.yml

@@ -29,7 +29,7 @@ permissions:
   contents: read
 
 jobs:
-  build:
+  test:
     strategy:
       matrix:
         version: ["3.10", "3.14"]

tests/conftest.py

@@ -1,3 +1,4 @@
+import os
 import pytest
 import functools
 import matplotlib
@@ -6,6 +7,11 @@
 from sklearn import datasets
 
 
+# Only force headless backend in CI
+if os.environ.get("CI") == "true":
+    matplotlib.use("Agg")
+    
+
 @pytest.fixture(autouse=True)
 def disable_plot(monkeypatch):
     # Patch plt.show to not halt testing flow, by making it not block