Convert legacy docker tests from bash to golang

.github/workflows/e2e.yaml

@@ -121,3 +121,85 @@ jobs:
         . ./tests/docker/test-helpers
         . ./tests/docker/test-run-${{ matrix.dtest }}
         echo "Did test-run-${{ matrix.dtest }} pass $?"
+
+  build-go-tests:
+    name: "Build Go Tests"
+    runs-on: ubuntu-latest
+    outputs:
+      branch_name: ${{ steps.branch_step.outputs.BRANCH_NAME }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Install Go
+      uses: ./.github/actions/setup-go
+    - name: Build Go Tests
+      run: |
+        mkdir -p ./dist/artifacts
+        go test -c -ldflags="-w -s" -o ./dist/artifacts ./tests/docker/...
+    - name: Upload Go Tests
+      uses: actions/upload-artifact@v4
+      with:
+        name: docker-go-tests
+        path: ./dist/artifacts/*.test
+        compression-level: 9
+        retention-days: 1
+    # For upgrade and skew tests, we need to know the branch name this run is based off.
+    # Since this is predetermined, we can run this step before the docker-go job, saving time.
+    # For PRs we can use the base_ref (ie the target branch of the PR).
+    # For pushes to k3s-io/k3s, the branch_name is a valid ref, master or release-x.y.
+    # For pushes to a fork, we need to determine the branch name by finding the parent branch from git show-branch history.
+    - name: Determine branch name
+      id: branch_step
+      run: |
+        if [ ${{ github.repository }} = "k3s-io/k3s" ]; then 
+          BRANCH_NAME=$(echo ${{ github.base_ref || github.ref_name }})
+        elif [ -z "${{ github.base_ref }}" ]; then
+          # We are in a fork, and need some git history to determine the branch name
+          git fetch origin --depth=100 +refs/heads/*:refs/remotes/origin/*
+          BRANCH_NAME=$(git show-branch -a 2> /dev/null  | grep '\*' | grep -v `git rev-parse --abbrev-ref HEAD` | head -n1 |  sed 's/.*\[\(.*\/\)\(.*\)\].*/\2/' | sed 's/[\^~].*//')
+        else
+          BRANCH_NAME=${{ github.base_ref }}
+        fi
+        echo "Branch Name is $BRANCH_NAME"
+        echo "BRANCH_NAME=$BRANCH_NAME" >> $GITHUB_OUTPUT
+
+  docker-go:
+    needs: [build, build-go-tests]
+    name: Docker Tests In GO
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    strategy:
+      fail-fast: false
+      matrix:
+        dtest: [basics, bootstraptoken, cacerts, etcd, lazypull, skew, upgrade]
+    env:
+      BRANCH_NAME: ${{ needs.build-go-tests.outputs.branch_name }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: "Download K3s image"
+      uses: actions/download-artifact@v4
+      with:
+        name: k3s
+        path: ./dist/artifacts
+    - name: Load and set K3s image
+      run: |
+        docker image load -i ./dist/artifacts/k3s-image.tar
+        IMAGE_TAG=$(docker image ls --format '{{.Repository}}:{{.Tag}}' | grep 'rancher/k3s')
+        echo "K3S_IMAGE=$IMAGE_TAG" >> $GITHUB_ENV
+    - name: Download Go Tests
+      uses: actions/download-artifact@v4
+      with:
+        name: docker-go-tests
+        path: ./dist/artifacts
+    - name: Run ${{ matrix.dtest }} Test
+      # Put the compied test binary back in the same place as the test source
+      run: |
+        chmod +x ./dist/artifacts/${{ matrix.dtest }}.test
+        mv ./dist/artifacts/${{ matrix.dtest }}.test ./tests/docker/${{ matrix.dtest }}/
+        cd ./tests/docker/${{ matrix.dtest }}
+        if [ ${{ matrix.dtest }} = "upgrade" ] || [ ${{ matrix.dtest }} = "skew" ]; then
+          ./${{ matrix.dtest }}.test -k3sImage=$K3S_IMAGE -branch=$BRANCH_NAME
+        else
+          ./${{ matrix.dtest }}.test -k3sImage=$K3S_IMAGE
+        fi

go.mod

@@ -143,6 +143,7 @@ require (
 	go.etcd.io/etcd/server/v3 v3.5.16
 	go.uber.org/zap v1.27.0
 	golang.org/x/crypto v0.27.0
+	golang.org/x/mod v0.20.0
 	golang.org/x/net v0.29.0
 	golang.org/x/sync v0.8.0
 	golang.org/x/sys v0.25.0
@@ -449,7 +450,6 @@ require (
 	go.uber.org/mock v0.4.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
-	golang.org/x/mod v0.20.0 // indirect
 	golang.org/x/oauth2 v0.22.0 // indirect
 	golang.org/x/term v0.24.0 // indirect
 	golang.org/x/text v0.18.0 // indirect

scripts/test

@@ -23,6 +23,10 @@ docker ps
 # Only run basic tests on non amd64 archs, we use GitHub Actions for amd64
 if [ "$ARCH" != 'amd64' ]; then
 
+  export K3S_IMAGE="rancher/k3s:${VERSION_TAG}${SUFFIX}"
+  go test ./tests/docker/basics/basics_test.go -k3sImage="$K3S_IMAGE"
+  echo "Did go test basics $?"
+
   . ./tests/docker/test-run-basics
   echo "Did test-run-basics $?"
 

tests/docker/basics/basics_test.go

@@ -0,0 +1,121 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+	"testing"
+
+	tester "github.com/k3s-io/k3s/tests/docker"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var k3sImage = flag.String("k3sImage", "", "The k3s image used to provision containers")
+var config *tester.TestConfig
+
+func Test_DockerBasic(t *testing.T) {
+	flag.Parse()
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Basic Docker Test Suite")
+}
+
+var _ = Describe("Basic Tests", Ordered, func() {
+
+	Context("Setup Cluster", func() {
+		It("should provision servers and agents", func() {
+			var err error
+			config, err = tester.NewTestConfig(*k3sImage)
+			Expect(err).NotTo(HaveOccurred())
+			Expect(config.ProvisionServers(1)).To(Succeed())
+			Expect(config.ProvisionAgents(1)).To(Succeed())
+			Eventually(func() error {
+				return tester.DeploymentsReady([]string{"coredns", "local-path-provisioner", "metrics-server", "traefik"}, config.KubeconfigFile)
+			}, "60s", "5s").Should(Succeed())
+			Eventually(func() error {
+				return tester.NodesReady(config.KubeconfigFile)
+			}, "40s", "5s").Should(Succeed())
+		})
+	})
+
+	Context("Verify Binaries and Images", func() {
+		It("has valid bundled binaries", func() {
+			for _, server := range config.Servers {
+				Expect(tester.VerifyValidVersion(server.Name, "kubectl")).To(Succeed())
+				Expect(tester.VerifyValidVersion(server.Name, "ctr")).To(Succeed())
+				Expect(tester.VerifyValidVersion(server.Name, "crictl")).To(Succeed())
+			}
+		})
+		It("has valid airgap images", func() {
+			Expect(config).To(Not(BeNil()))
+			err := VerifyAirgapImages(config.Servers)
+			Expect(err).NotTo(HaveOccurred())
+		})
+	})
+
+	Context("Use Local Storage Volume", func() {
+		It("should apply local storage volume", func() {
+			const volumeTestManifest = "../resources/volume-test.yaml"
+
+			// Apply the manifest
+			cmd := fmt.Sprintf("kubectl apply -f %s --kubeconfig=%s", volumeTestManifest, config.KubeconfigFile)
+			_, err := tester.RunCommand(cmd)
+			Expect(err).NotTo(HaveOccurred(), "failed to apply volume test manifest")
+		})
+		It("should validate local storage volume", func() {
+			Eventually(func() (bool, error) {
+				return tester.PodReady("volume-test", "kube-system", config.KubeconfigFile)
+			}, "20s", "5s").Should(BeTrue())
+		})
+	})
+})
+
+var failed bool
+var _ = AfterEach(func() {
+	failed = failed || CurrentSpecReport().Failed()
+})
+
+var _ = AfterSuite(func() {
+	if config != nil && !failed {
+		config.Cleanup()
+	}
+})
+
+// VerifyAirgapImages checks for changes in the airgap image list
+func VerifyAirgapImages(servers []tester.ServerConfig) error {
+	// This file is generated during the build packaging step
+	const airgapImageList = "../../../scripts/airgap/image-list.txt"
+
+	// Use a map to automatically handle duplicates
+	imageSet := make(map[string]struct{})
+	// Collect all images from containers
+	for _, server := range servers {
+		name := server.Name
+		cmd := fmt.Sprintf("docker exec %s crictl images -o json | jq -r '.images[].repoTags[0] | select(. != null)'", name)
+		output, err := tester.RunCommand(cmd)
+		Expect(err).NotTo(HaveOccurred(), "failed to execute crictl and jq: %v", err)
+
+		for _, line := range strings.Split(strings.TrimSpace(string(output)), "\n") {
+			if line != "" {
+				imageSet[line] = struct{}{}
+			}
+		}
+	}
+
+	// Convert map keys to slice
+	uniqueImages := make([]string, 0, len(imageSet))
+	for image := range imageSet {
+		uniqueImages = append(uniqueImages, image)
+	}
+
+	existing, err := os.ReadFile(airgapImageList)
+	if err != nil && !os.IsNotExist(err) {
+		return fmt.Errorf("failed to read airgap list file: %v", err)
+	}
+
+	// Sorting doesn't matter with ContainElements
+	existingImages := strings.Split(strings.TrimSpace(string(existing)), "\n")
+	Expect(existingImages).To(ContainElements(uniqueImages))
+	return nil
+}

tests/docker/bootstraptoken/bootstraptoken_test.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"flag"
+	"strings"
+	"testing"
+
+	tester "github.com/k3s-io/k3s/tests/docker"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var k3sImage = flag.String("k3sImage", "", "The k3s image used to provision containers")
+var config *tester.TestConfig
+
+func Test_DockerBootstrapToken(t *testing.T) {
+	flag.Parse()
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "BoostrapToken Docker Test Suite")
+}
+
+var _ = Describe("Boostrap Token Tests", Ordered, func() {
+
+	Context("Setup Cluster", func() {
+		It("should provision servers", func() {
+			var err error
+			config, err = tester.NewTestConfig(*k3sImage)
+			Expect(err).NotTo(HaveOccurred())
+			Expect(config.ProvisionServers(1)).To(Succeed())
+			Eventually(func() error {
+				return tester.DeploymentsReady([]string{"coredns", "local-path-provisioner", "metrics-server", "traefik"}, config.KubeconfigFile)
+			}, "60s", "5s").Should(Succeed())
+		})
+	})
+
+	Context("Add Agent with Bootstrap token", func() {
+		var newSecret string
+		It("creates a bootstrap token", func() {
+			var err error
+			newSecret, err = tester.RunCmdOnDocker(config.Servers[0].Name, "k3s token create --ttl=5m --description=Test")
+			Expect(err).NotTo(HaveOccurred())
+			Expect(newSecret).NotTo(BeEmpty())
+		})
+		It("joins the agent with the new tokens", func() {
+			newSecret = strings.ReplaceAll(newSecret, "\n", "")
+			config.Secret = newSecret
+			Expect(config.ProvisionAgents(1)).To(Succeed())
+			Eventually(func(g Gomega) {
+				nodes, err := tester.ParseNodes(config.KubeconfigFile)
+				g.Expect(err).NotTo(HaveOccurred())
+				g.Expect(nodes).To(HaveLen(2))
+				g.Expect(tester.NodesReady(config.KubeconfigFile)).To(Succeed())
+			}, "40s", "5s").Should(Succeed())
+		})
+	})
+})
+
+var failed bool
+var _ = AfterEach(func() {
+	failed = failed || CurrentSpecReport().Failed()
+})
+
+var _ = AfterSuite(func() {
+	if config != nil && !failed {
+		config.Cleanup()
+	}
+})