Add CI config

.github/workflows/go.yml

@@ -1,23 +1,18 @@
 ---
-name: Linters
+name: Go
 on:
-  push:
-    branches:
-      - main
   pull_request:
     types:
       - unlabeled # if GitHub Actions stuck, add and remove "not ready" label to force rebuild
       - opened
       - reopened
       - synchronize
+  push:
+    branches:
+      - main
   schedule:
     - cron: "12 3 * * *"
 
-# Do not run this job in parallel for any PR change or branch push.
-concurrency:
-  group: ${{ github.workflow }}-golangci-lint-${{ github.head_ref || github.ref_name }}
-  cancel-in-progress: true
-
 env:
   GOPATH: /home/runner/go
   GOCACHE: /home/runner/go/cache
@@ -27,6 +22,50 @@ env:
   GOTOOLCHAIN: local
 
 jobs:
+  tests:
+    name: Tests
+    runs-on: ubuntu-22.04
+    timeout-minutes: 10
+
+    # Do not run this job in parallel for any PR change or branch push.
+    concurrency:
+      group: ${{ github.workflow }}-tests-${{ github.head_ref || github.ref_name }}
+      cancel-in-progress: true
+
+    if: github.event_name != 'pull_request' || !contains(github.event.pull_request.labels.*.name, 'not ready')
+
+    steps:
+      # TODO https://github.com/FerretDB/github-actions/issues/211
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: FerretDB/github-actions/setup-go@main
+        with:
+          cache-key: tests
+
+      - name: Install Task
+        run: go generate -x
+        working-directory: tools
+
+      - name: Run init
+        run: bin/task init
+
+      - name: Run tests
+        run: bin/task tests
+        env:
+          GOFLAGS: ${{ runner.debug == '1' && '-v' || '' }}
+
+      # we don't want them on CI
+      - name: Clean test and fuzz caches
+        if: always()
+        run: go clean -testcache -fuzzcache
+
+      - name: Check dirty
+        run: |
+          git status
+          git diff --exit-code
+
   linters:
     name: linters
     runs-on: ubuntu-22.04
@@ -45,12 +84,11 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0 # for `golangci-lint run --new` to work
-          lfs: false # LFS is used only by website
 
       - name: Setup Go
         uses: FerretDB/github-actions/setup-go@main
         with:
-          cache-key: lint
+          cache-key: linters
 
       - name: Run linters
         uses: FerretDB/github-actions/linters@main

Taskfile.yaml

@@ -4,6 +4,7 @@ version: "3"
 vars:
   DB: ""
   CONFIG: ""
+  RACE_FLAG: -race={{and (ne OS "windows") (ne ARCH "arm") (ne ARCH "riscv64")}}
 
 tasks:
   init-tools:
@@ -64,6 +65,11 @@ tasks:
     cmds:
       - go build -v -o bin/ ./cmd/dance/
 
+  test:
+    desc: "Run unit tests (with caching)"
+    cmds:
+      - go test {{.RACE_FLAG}} -shuffle=on ./internal/...
+
   dance:
     desc: "Dance!"
     deps: [build]