56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
|
package containerd
|
||
|
|
|
||
|
|
import (
|
||
|
|
"testing"
|
||
|
|
|
||
|
|
"github.com/opencontainers/go-digest"
|
||
|
|
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
||
|
|
"gotest.tools/v3/assert"
|
||
|
|
is "gotest.tools/v3/assert/cmp"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestIsRootfsChildOf(t *testing.T) {
|
||
|
|
// Each unique letter is one distinct DiffID
|
||
|
|
ab := toRootfs("AB")
|
||
|
|
abc := toRootfs("ABC")
|
||
|
|
abd := toRootfs("ABD")
|
||
|
|
xyz := toRootfs("XYZ")
|
||
|
|
xyzab := toRootfs("XYZAB")
|
||
|
|
|
||
|
|
for _, tc := range []struct {
|
||
|
|
name string
|
||
|
|
parent ocispec.RootFS
|
||
|
|
child ocispec.RootFS
|
||
|
|
out bool
|
||
|
|
}{
|
||
|
|
{parent: ab, child: abc, out: true, name: "one additional layer"},
|
||
|
|
{parent: xyz, child: xyzab, out: true, name: "two additional layers"},
|
||
|
|
{parent: xyz, child: xyz, out: false, name: "parent is not a child of itself"},
|
||
|
|
{parent: abc, child: abd, out: false, name: "sibling"},
|
||
|
|
{parent: abc, child: xyz, out: false, name: "completely different rootfs, but same length"},
|
||
|
|
{parent: abc, child: ab, out: false, name: "child can't be shorter than parent"},
|
||
|
|
{parent: ab, child: xyzab, out: false, name: "parent layers appended"},
|
||
|
|
} {
|
||
|
|
tc := tc
|
||
|
|
t.Run(tc.name, func(t *testing.T) {
|
||
|
|
out := isRootfsChildOf(tc.child, tc.parent)
|
||
|
|
|
||
|
|
assert.Check(t, is.Equal(out, tc.out))
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func toRootfs(values string) ocispec.RootFS {
|
||
|
|
dgsts := []digest.Digest{}
|
||
|
|
|
||
|
|
for _, v := range values {
|
||
|
|
vd := digest.FromString(string(v))
|
||
|
|
dgsts = append(dgsts, vd)
|
||
|
|
}
|
||
|
|
|
||
|
|
return ocispec.RootFS{
|
||
|
|
Type: "layers",
|
||
|
|
DiffIDs: dgsts,
|
||
|
|
}
|
||
|
|
}
|