CI: Prevent large files from being added

.github/workflows/file-size.yml

@@ -0,0 +1,33 @@
+name: File Size Check
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["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: Get changed files
+      id: changed-files
+      uses: tj-actions/changed-files@v18.4
+    - name: List all changed files
+      run: |
+        # MAXSIZE is 1 MB
+        MAXSIZE=1000000
+        for FILENAME in ${{ steps.changed-files.outputs.all_changed_files }}; do
+          FILESIZE=$(stat -c%s "$FILENAME")
+          echo "Size of $FILENAME = $FILESIZE bytes."
+          if (( FILESIZE > MAXSIZE)); then
+            echo "$FILENAME is too big. Only $MAXSIZE bytes allowed."
+            exit 1
+          fi
+        done

.pre-commit-config.yaml

@@ -13,6 +13,8 @@ repos:
     -   id: end-of-file-fixer
     -   id: trailing-whitespace
     -   id: mixed-line-ending
+    -   id: check-added-large-files
+        args: ['--maxkb=1000']
 -   repo: https://github.com/pre-commit/mirrors-isort
     rev: v5.10.1
     hooks:
@@ -22,7 +24,7 @@ repos:
     hooks:
     -   id: black
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.31.0
+    rev: v2.31.1
     hooks:
     -   id: pyupgrade
         args: [--py37-plus]
@@ -30,4 +32,4 @@ repos:
     rev: v1.12.1
     hooks:
     -   id: blacken-docs
-        additional_dependencies: [black==20.8b1]
+        additional_dependencies: [black==22.1.0]