add tests

.github/workflows/tests.yml

@@ -0,0 +1,71 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.8, 3.9, "3.10"]
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install build dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install numpy pandas setuptools wheel
+        sudo apt-get update
+        sudo apt-get install -y g++
+    
+    - name: Create package structure
+      run: |
+        mkdir -p utils
+        mkdir -p pattern_causality/utils
+        
+        cat > utils/__init__.py << 'EOL'
+        from .statespace import statespace
+        from .patternhashing import patternhashing
+        from .signaturespace import signaturespace
+        from .distancematrix import distancematrix
+        from .patternspace import patternspace
+        from .pastNNs import pastNNs
+        from .projectedNNs import projectedNNs
+        from .predictionY import predictionY
+        from .fillPCMatrix import fillPCMatrix
+        from .natureOfCausality import natureOfCausality
+        from .databank import databank
+        from .fcp import fcp
+
+        __all__ = [
+            'statespace', 'patternhashing', 'signaturespace', 'distancematrix',
+            'patternspace', 'pastNNs', 'projectedNNs', 'predictionY',
+            'fillPCMatrix', 'natureOfCausality', 'databank', 'fcp'
+        ]
+        EOL
+        
+        touch pattern_causality/utils/__init__.py
+    
+    - name: Install package
+      run: |
+        pip install pytest pytest-cov
+        pip install -e .
+    
+    - name: List directory structure
+      run: |
+        echo "Current directory structure:"
+        find . -type f -name "*.py" -o -name "*.cpp"
+    
+    - name: Run tests
+      run: |
+        python -m pytest tests/ --cov=pattern_causality -v