ci: add makefile & ci

Author: ethanndickson

.github/actions/setup-go/action.yaml

@@ -0,0 +1,24 @@
+name: "Setup Go"
+description: |
+  Sets up the Go environment for tests, builds, etc.
+inputs:
+  version:
+    description: "The Go version to use."
+    default: "1.24.6"
+  use-cache:
+    description: "Whether to use the cache."
+    default: "true"
+runs:
+  using: "composite"
+  steps:
+    - name: Setup Go
+      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      with:
+        go-version: ${{ inputs.version }}
+        cache: ${{ inputs.use-cache }}
+
+    # It isn't necessary that we ever do this, but it helps separate the "setup"
+    # from the "run" times.
+    - name: go mod download
+      shell: bash
+      run: go mod download -x

.github/workflows/ci.yaml

@@ -0,0 +1,68 @@
+name: quality
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+# Cancel in-progress runs for pull requests when developers push additional
+# changes.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  fmt:
+    name: fmt
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - name: make fmt
+        run: make fmt
+
+      - name: Check unstaged
+        run: |
+          if [[ -n $(git ls-files --other --modified --exclude-standard) ]]; then
+            echo "Unexpected difference in directories after formatting. Run 'make fmt' and include the output in the commit."
+            exit 1
+          fi
+
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - name: Setup Go
+        uses: ./.github/actions/setup-go
+
+      - name: make lint
+        run: make lint
+
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - name: Setup Go
+        uses: ./.github/actions/setup-go
+
+      - name: make test
+        run: make test

.gitignore

@@ -0,0 +1,34 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Code coverage profiles and other test artifacts
+*.out
+coverage.*
+*.coverprofile
+profile.cov
+
+# Go workspace file
+go.work
+go.work.sum
+
+# env file
+.env
+
+# Editor/IDE
+.idea/
+.vscode/
+
+# Key files
+*.key
+*.pub
+*.pem
+
+# Output directory
+build/

.golangci.yaml

@@ -0,0 +1,22 @@
+version: "2"
+
+linters:
+  enable:
+    - goconst
+    - gocritic
+    - gosec
+    - misspell
+    - nakedret
+    - revive
+    - unconvert
+    - unparam
+  settings:
+    govet:
+      enable:
+        - shadow
+    misspell:
+      locale: US
+    revive:
+      rules:
+        - name: package-comments
+          disabled: true

Makefile

@@ -0,0 +1,27 @@
+FIND_EXCLUSIONS= \
+	-not \( \( -path '*/.git/*' -o -path './build/*' -o -path './vendor/*' -o -path '*/.terraform/*' \) -prune \)
+GO_SRC_FILES := $(shell find . $(FIND_EXCLUSIONS) -type f -name '*.go' -not -name '*_test.go')
+GO_FMT_FILES := $(shell find . $(FIND_EXCLUSIONS) -type f -name '*.go' -print0 | xargs -0 grep -E --null -L '^// Code generated .* DO NOT EDIT\.$$' | tr '\0' ' ')
+
+default: build
+
+build/paralleltestctx: $(GO_SRC_FILES) go.mod go.sum
+	mkdir -p ./build
+	go build -o ./build/paralleltestctx .
+
+build: build/paralleltestctx
+.PHONY: build
+
+fmt:
+	go mod tidy
+	go run golang.org/x/tools/cmd/goimports@v0.35.0 -w $(GO_FMT_FILES)
+	go run mvdan.cc/gofumpt@v0.8.0 -w -l $(GO_FMT_FILES)
+.PHONY: fmt
+
+lint:
+	go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.4.0 run ./...
+.PHONY: lint
+
+test:
+	go test -test.v -timeout 30s -cover ./...
+.PHONY: test

main.go

@@ -0,0 +1,8 @@
+package main
+
+import (
+	"github.com/coder/paralleltestctx/pkg/paralleltestctx"
+	"golang.org/x/tools/go/analysis/singlechecker"
+)
+
+func main() { singlechecker.Main(paralleltestctx.Analyzer()) }