45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
package container
|
|
|
|
import (
|
|
"context"
|
|
"io/ioutil"
|
|
"testing"
|
|
|
|
"github.com/docker/docker/api/types"
|
|
"github.com/docker/docker/client"
|
|
log "github.com/sirupsen/logrus"
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func init() {
|
|
log.SetLevel(log.DebugLevel)
|
|
}
|
|
|
|
func TestImageExistsLocally(t *testing.T) {
|
|
if testing.Short() {
|
|
t.Skip("skipping integration test")
|
|
}
|
|
// to help make this test reliable and not flaky, we need to have
|
|
// an image that will exist, and onew that won't exist
|
|
|
|
exists, err := ImageExistsLocally(context.TODO(), "library/alpine:this-random-tag-will-never-exist")
|
|
assert.Nil(t, err)
|
|
assert.Equal(t, false, exists)
|
|
|
|
// pull an image
|
|
cli, err := client.NewClientWithOpts(client.FromEnv)
|
|
assert.Nil(t, err)
|
|
cli.NegotiateAPIVersion(context.TODO())
|
|
|
|
// Chose alpine latest because it's so small
|
|
// maybe we should build an image instead so that tests aren't reliable on dockerhub
|
|
reader, err := cli.ImagePull(context.TODO(), "alpine:latest", types.ImagePullOptions{})
|
|
assert.Nil(t, err)
|
|
defer reader.Close()
|
|
_, err = ioutil.ReadAll(reader)
|
|
assert.Nil(t, err)
|
|
|
|
exists, err = ImageExistsLocally(context.TODO(), "alpine:latest")
|
|
assert.Nil(t, err)
|
|
assert.Equal(t, true, exists)
|
|
}
|