108 lines
3.5 KiB
Go
108 lines
3.5 KiB
Go
//go:build !remote
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package libimage
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import (
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"context"
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"os"
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"strings"
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"testing"
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"github.com/containers/common/pkg/config"
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"github.com/stretchr/testify/require"
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)
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func TestSave(t *testing.T) {
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runtime := testNewRuntime(t)
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ctx := context.Background()
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// Prefetch alpine, busybox.
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pullOptions := &PullOptions{}
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pullOptions.Writer = os.Stdout
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_, err := runtime.Pull(ctx, "docker.io/library/alpine:latest", config.PullPolicyAlways, pullOptions)
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require.NoError(t, err)
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_, err = runtime.Pull(ctx, "docker.io/library/busybox:latest", config.PullPolicyAlways, pullOptions)
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require.NoError(t, err)
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// Save the two images into a multi-image archive. This way, we can
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// reload the images for each test.
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saveOptions := &SaveOptions{}
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saveOptions.Writer = os.Stdout
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imageCache, err := os.CreateTemp("", "saveimagecache")
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require.NoError(t, err)
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imageCache.Close()
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defer os.Remove(imageCache.Name())
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err = runtime.Save(ctx, []string{"alpine", "busybox"}, "docker-archive", imageCache.Name(), saveOptions)
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require.NoError(t, err)
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loadOptions := &LoadOptions{}
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loadOptions.Writer = os.Stdout
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// The table tests are smoke tests to exercise the different code
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// paths. More detailed tests follow below.
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for _, test := range []struct {
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names []string
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tags []string
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format string
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isDir bool
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expectError bool
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}{
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// No `names`
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{nil, nil, "", false, true},
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{[]string{}, nil, "", false, true},
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// Invalid/unsupported format
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{[]string{"something"}, nil, "", false, true},
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{[]string{"something"}, nil, "else", false, true},
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// oci
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{[]string{"busybox"}, nil, "oci-dir", true, false},
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{[]string{"busybox"}, nil, "oci-archive", false, false},
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// oci-archive doesn't support multi-image archives
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{[]string{"busybox", "alpine"}, nil, "oci-archive", false, true},
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// docker
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{[]string{"busybox"}, nil, "docker-archive", false, false},
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{[]string{"busybox"}, []string{"localhost/tag:1", "quay.io/repo/image:tag"}, "docker-archive", false, false},
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{[]string{"busybox"}, nil, "docker-dir", true, false},
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{[]string{"busybox", "alpine"}, nil, "docker-archive", false, false},
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// additional tags and multi-images conflict
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{[]string{"busybox", "alpine"}, []string{"tag"}, "docker-archive", false, true},
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} {
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// First clean up all images and load the cache.
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_, rmErrors := runtime.RemoveImages(ctx, nil, nil)
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require.Nil(t, rmErrors)
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_, err = runtime.Load(ctx, imageCache.Name(), loadOptions)
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require.NoError(t, err)
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tmp := t.TempDir()
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if !test.isDir {
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tmp += "/archive.tar"
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}
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saveOptions.AdditionalTags = test.tags
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err = runtime.Save(ctx, test.names, test.format, tmp, saveOptions)
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if test.expectError {
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require.Error(t, err, "%v", test)
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continue
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}
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require.NoError(t, err, "%v", test)
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// Now remove all images again and attempt to load the
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// previously saved ones.
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_, rmErrors = runtime.RemoveImages(ctx, nil, nil)
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require.Nil(t, rmErrors)
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namesAndTags := append(test.names, test.tags...) //nolint:gocritic // ignore "appendAssign: append result not assigned to the same slice"
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loadedImages, err := runtime.Load(ctx, tmp, loadOptions)
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require.NoError(t, err)
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require.Len(t, loadedImages, len(namesAndTags))
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// Now make sure that all specified names (and tags) resolve to
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// an image the local containers storage. Note that names are
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// only preserved in archives.
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if strings.HasSuffix(test.format, "-dir") {
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continue
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}
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_, err = runtime.ListImages(ctx, namesAndTags, nil)
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require.NoError(t, err, "%v", test)
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}
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}
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