add run-examples workflow (#576)

* add run-examples workflow

* fix ruff

* run all examples in parallel

---------

Co-authored-by: Walter Simson <waltsims@users.noreply.github.com>

Author: waltsims

.github/workflows/run-examples.yml

@@ -0,0 +1,51 @@
+name: Run K-Wave Examples
+
+on:
+  schedule:
+    - cron: '0 0 * * 1'  # Every Monday at 00:00 UTC
+  workflow_dispatch:      # Manual trigger
+
+jobs:
+  discover-examples:
+    runs-on: ubuntu-latest
+    outputs:
+      example_paths: ${{ steps.find-examples.outputs.examples }}
+    steps:
+      - uses: actions/checkout@v4
+      - id: find-examples
+        run: |
+          # Find all Python files in examples subdirectories
+          EXAMPLES=$(find examples -name "*.py" -not -path "*/\.*" | jq -R -s -c 'split("\n")[:-1]')
+          echo "examples=$EXAMPLES" >> "$GITHUB_OUTPUT"
+
+  run-examples:
+    needs: discover-examples
+    runs-on: ubuntu-latest
+    timeout-minutes: 60  # 1 hour timeout per example
+    strategy:
+      fail-fast: false  # Continue running other examples even if one fails
+      matrix:
+        example: ${{ fromJson(needs.discover-examples.outputs.example_paths) }}
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'  # Matches requires-python from pyproject.toml
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          # Install the package with example dependencies
+          pip install -e ".[example]"
+
+      - name: Run example
+        env:
+          KWAVE_FORCE_CPU: 1
+        run: |
+          echo "Running example: ${{ matrix.example }}"
+          python "${{ matrix.example }}" 

tests/test_create_pixel_dim.py

@@ -1,4 +1,3 @@
-import pytest
 import numpy as np
 
 from kwave.utils.mapgen import create_pixel_dim