test: Add an test for added logic to TestRunWithInvalidPortThenCleanUp

This commit adds an test for added logic to clean up an orphaned etchosts
directory for the container that failed to create to
TestRunWithInvalidPortThenCleanUp.

Signed-off-by: Hayato Kiwata <[email protected]>

Author: haytok

cmd/nerdctl/container/container_run_network_linux_test.go

@@ -22,17 +22,20 @@ import (
 	"net"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"regexp"
 	"runtime"
 	"strings"
 	"testing"
 	"time"
 
 	"github.com/containernetworking/plugins/pkg/ns"
+	"github.com/opencontainers/go-digest"
 	"github.com/vishvananda/netlink"
 	"gotest.tools/v3/assert"
 	"gotest.tools/v3/icmd"
 
+	"github.com/containerd/containerd/v2/defaults"
 	"github.com/containerd/containerd/v2/pkg/netns"
 	"github.com/containerd/errdefs"
 
@@ -368,6 +371,27 @@ func TestRunWithInvalidPortThenCleanUp(t *testing.T) {
 				return &test.Expected{
 					ExitCode: 1,
 					Errors:   []error{errdefs.ErrInvalidArgument},
+					Output: func(stdout string, info string, t *testing.T) {
+						getAddrHash := func(addr string) string {
+							const addrHashLen = 8
+
+							d := digest.SHA256.FromString(addr)
+							h := d.Encoded()[0:addrHashLen]
+
+							return h
+						}
+
+						dataRoot := data.TempDir()
+						h := getAddrHash(defaults.DefaultAddress)
+						dataStore := filepath.Join(dataRoot, h)
+						namespace := string(helpers.Read(nerdtest.Namespace))
+						etchostsPath := filepath.Join(dataStore, "etchosts", namespace)
+
+						etchostsDirs, err := os.ReadDir(etchostsPath)
+
+						assert.NilError(t, err)
+						assert.Equal(t, len(etchostsDirs), 0)
+					},
 				}
 			},
 		},