moby/integration-cli/docker_cli_pull_local_test.go

package main

import (
	"fmt"

	"github.com/go-check/check"
)

// TestPullImageWithAliases pulls a specific image tag and verifies that any aliases (i.e., other
// tags for the same image) are not also pulled down.
//
// Ref: docker/docker#8141
func (s *DockerRegistrySuite) TestPullImageWithAliases(c *check.C) {
	repoName := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)

	repos := []string{}
	for _, tag := range []string{"recent", "fresh"} {
		repos = append(repos, fmt.Sprintf("%v:%v", repoName, tag))
	}

	// Tag and push the same image multiple times.
	for _, repo := range repos {
		dockerCmd(c, "tag", "busybox", repo)
		dockerCmd(c, "push", repo)
	}

	// Clear local images store.
	args := append([]string{"rmi"}, repos...)
	dockerCmd(c, args...)

	// Pull a single tag and verify it doesn't bring down all aliases.
	dockerCmd(c, "pull", repos[0])
	dockerCmd(c, "inspect", repos[0])
	for _, repo := range repos[1:] {
		if _, _, err := dockerCmdWithError("inspect", repo); err == nil {
			c.Fatalf("Image %v shouldn't have been pulled down", repo)
		}
	}
}