testing gh workflow: skipping tests for unchanged files

.github/workflows/test.yaml

@@ -10,125 +10,144 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-    linting:
-        runs-on: ubuntu-latest
-
-        steps:
-        - uses: actions/checkout@v3
-
-        - name: Setup Python
-          uses: actions/setup-python@v4
-          with:
-              python-version: "3.10"
-
-        - name: Install Dependencies
-          run: |
-            python -m pip install --upgrade pip
-            pip install .[lint]
-
-        - name: Run Black
-          run: black --check .
-
-        - name: Run isort
-          run: isort --check-only .
-
-        - name: Run flake8
-          run: flake8 .
-
-        - name: Run mdformat
-          run: mdformat . --check
-
-    type-check:
-        runs-on: ubuntu-latest
-
-        steps:
-        - uses: actions/checkout@v3
-
-        - name: Setup Python
-          uses: actions/setup-python@v4
-          with:
-              python-version: "3.10"
-
-        - name: Install Dependencies
-          run: |
-            python -m pip install --upgrade pip
-            pip install .[lint,test]
-
-        - name: Run MyPy
-          run: mypy .
-
-    functional:
-        runs-on: ${{ matrix.os }}
-
-        strategy:
-            matrix:
-                os: [ubuntu-latest, macos-latest]   # eventually add `windows-latest`
-                python-version: [3.8, 3.9, "3.10", "3.11"]
-
-        env:
+  detect-changes:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install changed-files action
+      run: npm install umani/changed-files
+
+    - name: Detect Changed Files
+      id: changed_files
+      run: npx changed-files --diff-base origin/main --extensions py
+
+  linting:
+    needs: detect-changes
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: "3.10"
+
+    - name: Install Dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install .[lint]
+
+    - name: Run Black
+      if: steps.detect-changes.outputs.files_changed == 'true'
+      run: black --check .
+    - name: Run isort
+      if: steps.detect-changes.outputs.files_changed == 'true'
+      run: isort --check-only .
+    - name: Run flake8
+      if: steps.detect-changes.outputs.files_changed == 'true'
+      run: flake8 .
+    - name: Run mdformat
+      if: steps.detect-changes.outputs.files_changed == 'true'
+      run: mdformat . --check
+
+
+  type-check:
+    needs: detect-changes
+    runs-on: ubuntu-latest
+
+    steps:
+    # Setup steps
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+          python-version: "3.10"
+
+    - name: Install Dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install .[lint,test]
+
+    - name: Run MyPy
+      if: steps.detect-changes.outputs.files_changed == 'true'
+      run: mypy .
+
+  functional:
+    needs: detect-changes
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest] # eventually add `windows-latest`
+        python-version: [3.8, 3.9, "3.10", "3.11"]
+    env:
           GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GETH_VERSION: 1.12.0
-
-        steps:
-        - uses: actions/checkout@v3
-          with:
-            fetch-depth: 0
-
-        - name: Setup Python
-          uses: actions/setup-python@v4
-          with:
-              python-version: ${{ matrix.python-version }}
-
-        - name: Setup Go
-          uses: actions/setup-go@v4
-          with:
-            go-version: '^1.20.1'
-
-        - name: Cache Geth
-          id: cache-geth
-          uses: actions/cache@v3
-          with:
-            path: $HOME/.local/bin
-            key: ${{ runner.os }}-geth-${{ env.GETH_VERSION }}
-
-        - name: Install Geth
-          if: steps.cache-geth.outputs.cache-hit != 'true'
-          run: |
-            mkdir -p $HOME/.local/bin
-            wget -O geth.tar.gz "https://github.com/ethereum/go-ethereum/archive/v$GETH_VERSION.tar.gz"
-            tar -zxvf geth.tar.gz
-            cd go-ethereum-$GETH_VERSION
-            make geth
-            cp ./build/bin/geth /usr/local/bin
-            geth version
-
-        - name: Install Dependencies
-          run: |
-            python -m pip install --upgrade pip
-            pip uninstall eth-ape --yes
-            pip install .[test]
-
-        - name: Run Tests
-          run: pytest -m "not fuzzing" -s --cov=src -n auto --dist loadscope
-
-    fuzzing:
-        runs-on: ubuntu-latest
-
-        strategy:
+    steps:
+    # Setup steps
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+          python-version: ${{ matrix.python-version }}
+
+    - name: Setup Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '^1.20.1'
+
+    - name: Cache Geth
+      id: cache-geth
+      uses: actions/cache@v3
+      with:
+        path: $HOME/.local/bin
+        key: ${{ runner.os }}-geth-${{ env.GETH_VERSION }}
+
+    - name: Install Geth
+      if: steps.cache-geth.outputs.cache-hit != 'true'
+      run: |
+        mkdir -p $HOME/.local/bin
+        wget -O geth.tar.gz "https://github.com/ethereum/go-ethereum/archive/v$GETH_VERSION.tar.gz"
+        tar -zxvf geth.tar.gz
+        cd go-ethereum-$GETH_VERSION
+        make geth
+        cp ./build/bin/geth /usr/local/bin
+        geth version
+
+    - name: Install Dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip uninstall eth-ape --yes
+        pip install .[test]
+    - name: Run Tests
+      if: steps.detect-changes.outputs.files_changed == 'true'
+      run: pytest -m "not fuzzing" -s --cov=src -n auto --dist loadscope
+
+  fuzzing:
+    needs: detect-changes
+    runs-on: ubuntu-latest
+
+    strategy:
             fail-fast: true
 
-        steps:
-        - uses: actions/checkout@v3
+    steps:
+    # Setup steps
+    - uses: actions/checkout@v3
 
-        - name: Setup Python
-          uses: actions/setup-python@v4
-          with:
-              python-version: "3.10"
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+          python-version: "3.10"
 
-        - name: Install Dependencies
-          run: |
-            python -m pip install --upgrade pip
-            pip install .[test]
+    - name: Install Dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install .[test]
 
-        - name: Run Tests
-          run: pytest -m "fuzzing" --no-cov -s
+    - name: Run Tests
+      if: steps.detect-changes.outputs.files_changed == 'true'
+      run: pytest -m "fuzzing" --no-cov -s