1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
package container
import (
"context"
"io"
"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")
}
ctx := context.Background()
// to help make this test reliable and not flaky, we need to have
// an image that will exist, and onew that won't exist
// Test if image exists with specific tag
invalidImageTag, err := ImageExistsLocally(ctx, "library/alpine:this-random-tag-will-never-exist", "linux/amd64")
assert.Nil(t, err)
assert.Equal(t, false, invalidImageTag)
// Test if image exists with specific architecture (image platform)
invalidImagePlatform, err := ImageExistsLocally(ctx, "alpine:latest", "windows/amd64")
assert.Nil(t, err)
assert.Equal(t, false, invalidImagePlatform)
// pull an image
cli, err := client.NewClientWithOpts(client.FromEnv)
assert.Nil(t, err)
cli.NegotiateAPIVersion(context.Background())
// Chose alpine latest because it's so small
// maybe we should build an image instead so that tests aren't reliable on dockerhub
readerDefault, err := cli.ImagePull(ctx, "node:16-buster-slim", types.ImagePullOptions{
Platform: "linux/amd64",
})
assert.Nil(t, err)
defer readerDefault.Close()
_, err = io.ReadAll(readerDefault)
assert.Nil(t, err)
imageDefaultArchExists, err := ImageExistsLocally(ctx, "node:16-buster-slim", "linux/amd64")
assert.Nil(t, err)
assert.Equal(t, true, imageDefaultArchExists)
// Validate if another architecture platform can be pulled
readerArm64, err := cli.ImagePull(ctx, "node:16-buster-slim", types.ImagePullOptions{
Platform: "linux/arm64",
})
assert.Nil(t, err)
defer readerArm64.Close()
_, err = io.ReadAll(readerArm64)
assert.Nil(t, err)
imageArm64Exists, err := ImageExistsLocally(ctx, "node:16-buster-slim", "linux/arm64")
assert.Nil(t, err)
assert.Equal(t, true, imageArm64Exists)
}
|
