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integration: add OCI <-> Docker roundtrip tests

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This test is just a general smoke test to make sure there are no errors
with skopeo, but also verifying that after passing through several
translation steps an OCI image will remain in fully working order.

Signed-off-by: Aleksa Sarai <asarai@suse.de>
This commit is contained in:
Aleksa Sarai 2017-02-16 01:28:16 +11:00
parent 79ef111398
commit 76f5c6d4c5
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1 changed files with 40 additions and 0 deletions
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integration/copy_test.go
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@ -186,6 +186,46 @@ func (s *CopySuite) TestCopyStreaming(c *check.C) {
// FIXME: Also check pushing to docker://
}
// OCI round-trip testing. It's very important to make sure that OCI <-> Docker
// conversion works (while skopeo handles many things, one of the most obvious
// benefits of a tool like skopeo is that you can use OCI tooling to create an
// image and then as the final step convert the image to a non-standard format
// like Docker). But this only works if we _test_ it.
func (s *CopySuite) TestCopyOCIRoundTrip(c *check.C) {
const ourRegistry = "docker://" + v2DockerRegistryURL + "/"
oci1, err := ioutil.TempDir("", "oci-1")
c.Assert(err, check.IsNil)
defer os.RemoveAll(oci1)
oci2, err := ioutil.TempDir("", "oci-2")
c.Assert(err, check.IsNil)
defer os.RemoveAll(oci2)
// Docker -> OCI
assertSkopeoSucceeds(c, "", "--tls-verify=false", "--debug", "copy", "docker://busybox", "oci:"+oci1+":latest")
// OCI -> Docker
assertSkopeoSucceeds(c, "", "--tls-verify=false", "--debug", "copy", "oci:"+oci1+":latest", ourRegistry+"original/busybox:oci_copy")
// Docker -> OCI
assertSkopeoSucceeds(c, "", "--tls-verify=false", "--debug", "copy", ourRegistry+"original/busybox:oci_copy", "oci:"+oci2+":latest")
// OCI -> Docker
assertSkopeoSucceeds(c, "", "--tls-verify=false", "--debug", "copy", "oci:"+oci2+":latest", ourRegistry+"original/busybox:oci_copy2")
// TODO: Add some more tags to output to and check those work properly.
// First, make sure the OCI blobs are the same. This should _always_ be true.
out := combinedOutputOfCommand(c, "diff", "-urN", oci1+"/blobs", oci2+"/blobs")
c.Assert(out, check.Equals, "")
// TODO: Verify using the upstream OCI image validator.
// Now verify that everything is identical. Currently this is true, but
// because we recompute the manifests on-the-fly this doesn't necessarily
// always have to be true (but if this breaks in the future __PLEASE__ make
// sure that the breakage actually makes sense before removing this check).
out = combinedOutputOfCommand(c, "diff", "-urN", oci1, oci2)
c.Assert(out, check.Equals, "")
}
// --sign-by and --policy copy, primarily using atomic:
func (s *CopySuite) TestCopySignatures(c *check.C) {
dir, err := ioutil.TempDir("", "signatures-dest")