Add justfile and basic CI

Author: rustaceanrob

.github/workflows/ci.yaml

@@ -0,0 +1,40 @@
+# A few guiding principles.
+# 
+# * Always use actions-rust-lang/setup-rust-toolchain for its built-in caching.
+# * Complexity lives in the justfile, this runner is as light as possible.
+ 
+name: CI
+
+# Run on direct commits to master, including merges, and any pull requests against master.
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  # Quick canary of code as well as potential issues with upcoming toolchains.
+  check:
+    strategy:
+      matrix:
+        toolchain: [stable, beta, nightly]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: ${{ matrix.toolchain }}
+          components: clippy,rustfmt
+      - run: just check
+  # Build and test the code across platforms.
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: "Run test suite"
+        run: just test

.gitignore

@@ -1,2 +1,3 @@
 /target
 Cargo.lock
+!justfile

justfile

@@ -0,0 +1,20 @@
+check:
+  cargo fmt -- --check
+  cargo clippy --all-targets -- -D warnings
+  cargo check --all-features
+
+# Run a test suite: unit
+test:
+  cargo test
+  cargo test --doc
+  cargo test --examples
+
+# Delete unused files or branches: data, lockfile, branches
+delete item="branches":
+  just _delete-{{item}}
+
+_delete-lockfile:
+  rm -f Cargo.lock
+
+_delete-branches:
+  git branch --merged | grep -v \* | xargs git branch -d