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package docker
import (
"context"
"testing"
"github.com/containers/image/v5/docker/reference"
"github.com/containers/image/v5/types"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const (
sha256digestHex = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
sha256digest = "@sha256:" + sha256digestHex
)
func TestTransportName(t *testing.T) {
assert.Equal(t, "docker", Transport.Name())
}
func TestTransportParseReference(t *testing.T) {
testParseReference(t, Transport.ParseReference)
}
func TestTransportValidatePolicyConfigurationScope(t *testing.T) {
for _, scope := range []string{
"docker.io/library/busybox" + sha256digest,
"docker.io/library/busybox:notlatest",
"docker.io/library/busybox",
"docker.io/library",
"docker.io",
"*.io",
} {
err := Transport.ValidatePolicyConfigurationScope(scope)
assert.NoError(t, err, scope)
}
}
func TestParseReference(t *testing.T) {
testParseReference(t, ParseReference)
}
// testParseReference is a test shared for Transport.ParseReference and ParseReference.
func testParseReference(t *testing.T, fn func(string) (types.ImageReference, error)) {
for _, c := range []struct{ input, expected string }{
{"busybox", ""}, // Missing // prefix
{"//busybox:notlatest", "docker.io/library/busybox:notlatest"}, // Explicit tag
{"//busybox" + sha256digest, "docker.io/library/busybox" + sha256digest}, // Explicit digest
{"//busybox", "docker.io/library/busybox:latest"}, // Default tag
// A github.com/distribution/reference value can have a tag and a digest at the same time!
// The docker/distribution API does not really support that (we can’t ask for an image with a specific
// tag and digest), so fail. This MAY be accepted in the future.
{"//busybox:latest" + sha256digest, ""}, // Both tag and digest
{"//docker.io/library/busybox:latest", "docker.io/library/busybox:latest"}, // All implied values explicitly specified
{"//UPPERCASEISINVALID", ""}, // Invalid input
} {
ref, err := fn(c.input)
if c.expected == "" {
assert.Error(t, err, c.input)
} else {
require.NoError(t, err, c.input)
dockerRef, ok := ref.(dockerReference)
require.True(t, ok, c.input)
assert.Equal(t, c.expected, dockerRef.ref.String(), c.input)
}
}
}
// A common list of reference formats to test for the various ImageReference methods.
var validReferenceTestCases = []struct{ input, dockerRef, stringWithinTransport string }{
{"busybox:notlatest", "docker.io/library/busybox:notlatest", "//busybox:notlatest"}, // Explicit tag
{"busybox" + sha256digest, "docker.io/library/busybox" + sha256digest, "//busybox" + sha256digest}, // Explicit digest
{"docker.io/library/busybox:latest", "docker.io/library/busybox:latest", "//busybox:latest"}, // All implied values explicitly specified
{"example.com/ns/foo:bar", "example.com/ns/foo:bar", "//example.com/ns/foo:bar"}, // All values explicitly specified
}
func TestNewReference(t *testing.T) {
for _, c := range validReferenceTestCases {
parsed, err := reference.ParseNormalizedNamed(c.input)
require.NoError(t, err)
ref, err := NewReference(parsed)
require.NoError(t, err, c.input)
dockerRef, ok := ref.(dockerReference)
require.True(t, ok, c.input)
assert.Equal(t, c.dockerRef, dockerRef.ref.String(), c.input)
}
// Neither a tag nor digest
parsed, err := reference.ParseNormalizedNamed("busybox")
require.NoError(t, err)
_, err = NewReference(parsed)
assert.Error(t, err)
// A github.com/distribution/reference value can have a tag and a digest at the same time!
parsed, err = reference.ParseNormalizedNamed("busybox:notlatest" + sha256digest)
require.NoError(t, err)
_, ok := parsed.(reference.Canonical)
require.True(t, ok)
_, ok = parsed.(reference.NamedTagged)
require.True(t, ok)
_, err = NewReference(parsed)
assert.Error(t, err)
}
func TestReferenceTransport(t *testing.T) {
ref, err := ParseReference("//busybox")
require.NoError(t, err)
assert.Equal(t, Transport, ref.Transport())
}
func TestReferenceStringWithinTransport(t *testing.T) {
for _, c := range validReferenceTestCases {
ref, err := ParseReference("//" + c.input)
require.NoError(t, err, c.input)
stringRef := ref.StringWithinTransport()
assert.Equal(t, c.stringWithinTransport, stringRef, c.input)
// Do one more round to verify that the output can be parsed, to an equal value.
ref2, err := Transport.ParseReference(stringRef)
require.NoError(t, err, c.input)
stringRef2 := ref2.StringWithinTransport()
assert.Equal(t, stringRef, stringRef2, c.input)
}
}
func TestReferenceDockerReference(t *testing.T) {
for _, c := range validReferenceTestCases {
ref, err := ParseReference("//" + c.input)
require.NoError(t, err, c.input)
dockerRef := ref.DockerReference()
require.NotNil(t, dockerRef, c.input)
assert.Equal(t, c.dockerRef, dockerRef.String(), c.input)
}
}
func TestReferencePolicyConfigurationIdentity(t *testing.T) {
// Just a smoke test, the substance is tested in policyconfiguration.TestDockerReference.
ref, err := ParseReference("//busybox")
require.NoError(t, err)
assert.Equal(t, "docker.io/library/busybox:latest", ref.PolicyConfigurationIdentity())
}
func TestReferencePolicyConfigurationNamespaces(t *testing.T) {
// Just a smoke test, the substance is tested in policyconfiguration.TestDockerReference.
ref, err := ParseReference("//busybox")
require.NoError(t, err)
assert.Equal(t, []string{
"docker.io/library/busybox",
"docker.io/library",
"docker.io",
"*.io",
}, ref.PolicyConfigurationNamespaces())
}
func TestReferenceNewImage(t *testing.T) {
ref, err := ParseReference("//quay.io/libpod/busybox")
require.NoError(t, err)
img, err := ref.NewImage(context.Background(), &types.SystemContext{
RegistriesDirPath: "/this/does/not/exist",
DockerPerHostCertDirPath: "/this/does/not/exist",
ArchitectureChoice: "amd64",
OSChoice: "linux",
})
require.NoError(t, err)
defer img.Close()
}
func TestReferenceNewImageSource(t *testing.T) {
ref, err := ParseReference("//quay.io/libpod/busybox")
require.NoError(t, err)
src, err := ref.NewImageSource(context.Background(),
&types.SystemContext{RegistriesDirPath: "/this/does/not/exist", DockerPerHostCertDirPath: "/this/does/not/exist"})
require.NoError(t, err)
defer src.Close()
}
func TestReferenceNewImageDestination(t *testing.T) {
ref, err := ParseReference("//quay.io/libpod/busybox")
require.NoError(t, err)
dest, err := ref.NewImageDestination(context.Background(),
&types.SystemContext{RegistriesDirPath: "/this/does/not/exist", DockerPerHostCertDirPath: "/this/does/not/exist"})
require.NoError(t, err)
defer dest.Close()
}
func TestReferenceTagOrDigest(t *testing.T) {
for input, expected := range map[string]string{
"//busybox:notlatest": "notlatest",
"//busybox" + sha256digest: "sha256:" + sha256digestHex,
} {
ref, err := ParseReference(input)
require.NoError(t, err, input)
dockerRef, ok := ref.(dockerReference)
require.True(t, ok, input)
tod, err := dockerRef.tagOrDigest()
require.NoError(t, err, input)
assert.Equal(t, expected, tod, input)
}
// Invalid input
ref, err := reference.ParseNormalizedNamed("busybox")
require.NoError(t, err)
dockerRef := dockerReference{ref: ref}
_, err = dockerRef.tagOrDigest()
assert.Error(t, err)
}
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