feat: add CI with pre-commit (ruff linting and pytest)

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  DASHVERSION: "23.0.2"
+
+jobs:
+  pre-commit:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.14"
+          allow-prereleases: true
+
+      - name: Cache dashd
+        uses: actions/cache@v4
+        with:
+          path: .dashd-cache
+          key: dashd-${{ runner.os }}-${{ env.DASHVERSION }}
+
+      - name: Setup dashd
+        env:
+          CACHE_DIR: ${{ github.workspace }}/.dashd-cache
+        run: python contrib/setup-dashd.py >> "$GITHUB_ENV"
+
+      - uses: pre-commit/action@v3.0.1

.pre-commit-config.yaml

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+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: trailing-whitespace
+        exclude: '\.md$'
+      - id: end-of-file-fixer
+        exclude: '^data/'
+      - id: check-yaml
+        args: ['--allow-multiple-documents']
+      - id: check-json
+        exclude: '^data/'
+      - id: check-toml
+      - id: check-merge-conflict
+      - id: mixed-line-ending
+        args: ['--fix=lf']
+      - id: check-added-large-files
+        args: ['--maxkb=1000']
+      - id: check-case-conflict
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
+
+  - repo: https://github.com/rhysd/actionlint
+    rev: v1.7.9
+    hooks:
+      - id: actionlint
+
+  - repo: https://github.com/crate-ci/typos
+    rev: v1.31.1
+    hooks:
+      - id: typos
+        args: ['--write-changes']
+        exclude: '^data/'
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.15.0
+    hooks:
+      - id: ruff-format
+      - id: ruff-check
+        args: [--fix]
+
+  - repo: local
+    hooks:
+      - id: pytest
+        name: pytest
+        entry: python3 -m pytest
+        language: python
+        additional_dependencies: [pytest]
+        pass_filenames: false
+        always_run: true

pyproject.toml

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+[tool.ruff]
+target-version = "py312"
+line-length = 120
+
+[tool.ruff.lint]
+select = [
+    "E",   # pycodestyle errors
+    "F",   # pyflakes
+    "W",   # pycodestyle warnings
+    "I",   # isort
+    "UP",  # pyupgrade
+    "B",   # flake8-bugbear
+    "SIM", # flake8-simplify
+]
+ignore = [
+    "E501",   # line too long (handled by formatter)
+    "SIM105", # contextlib.suppress - less readable than try/except/pass
+    "SIM108", # ternary operator - less readable for multi-line assignments
+]
+
+[tool.ruff.format]
+quote-style = "double"
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+markers = [
+    "integration: end-to-end tests requiring a real dashd binary (set DASHD_PATH)",
+]