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remote_test.go
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package remote_test
import (
"fmt"
"io"
"log"
"os"
"runtime"
"strings"
"testing"
"time"
"github.com/google/go-containerregistry/pkg/authn"
"github.com/google/go-containerregistry/pkg/name"
"github.com/google/go-containerregistry/pkg/registry"
v1 "github.com/google/go-containerregistry/pkg/v1"
"github.com/sclevine/spec"
"github.com/sclevine/spec/report"
"github.com/buildpacks/imgutil"
"github.com/buildpacks/imgutil/remote"
h "github.com/buildpacks/imgutil/testhelpers"
)
var dockerRegistry, readonlyDockerRegistry, customRegistry *h.DockerRegistry
const (
readWriteImage = "image-readable-writable"
readOnlyImage = "image-readable"
writeOnlyImage = "image-writable"
inaccessibleImage = "image-inaccessible"
someSHA = "sha256:aec070645fe53ee3b3763059376134f058cc337247c978add178b6ccdfb0019f"
)
func newTestImageName(providedPrefix ...string) string {
prefix := "pack-image-test"
if len(providedPrefix) > 0 {
prefix = providedPrefix[0]
}
return dockerRegistry.RepoName(prefix + "-" + h.RandString(10))
}
// FIXME: relevant tests in this file should be moved into new_test.go and save_test.go to mirror the implementation
func TestRemote(t *testing.T) {
dockerConfigDir, err := os.MkdirTemp("", "test.docker.config.dir")
h.AssertNil(t, err)
defer os.RemoveAll(dockerConfigDir)
sharedRegistryHandler := registry.New(registry.Logger(log.New(io.Discard, "", log.Lshortfile)))
dockerRegistry = h.NewDockerRegistry(h.WithAuth(dockerConfigDir), h.WithSharedHandler(sharedRegistryHandler))
dockerRegistry.Start(t)
defer dockerRegistry.Stop(t)
readonlyDockerRegistry = h.NewDockerRegistry(h.WithSharedHandler(sharedRegistryHandler))
readonlyDockerRegistry.Start(t)
defer readonlyDockerRegistry.Stop(t)
customDockerConfigDir, err := os.MkdirTemp("", "test.docker.config.custom.dir")
h.AssertNil(t, err)
defer os.RemoveAll(customDockerConfigDir)
customRegistry = h.NewDockerRegistry(h.WithAuth(customDockerConfigDir), h.WithSharedHandler(sharedRegistryHandler),
h.WithImagePrivileges())
customRegistry.SetReadWrite(readWriteImage)
customRegistry.SetReadOnly(readOnlyImage)
customRegistry.SetWriteOnly(writeOnlyImage)
customRegistry.SetInaccessible(inaccessibleImage)
customRegistry.Start(t)
os.Setenv("DOCKER_CONFIG", dockerRegistry.DockerDirectory)
defer os.Unsetenv("DOCKER_CONFIG")
spec.Run(t, "Image", testImage, spec.Sequential(), spec.Report(report.Terminal{}))
}
func testImage(t *testing.T, when spec.G, it spec.S) {
var repoName string
it.Before(func() {
repoName = newTestImageName()
})
when("#NewImage", func() {
when("no base image or platform is given", func() {
it("returns an empty image", func() {
_, err := remote.NewImage(newTestImageName(), authn.DefaultKeychain)
h.AssertNil(t, err)
})
it("sets sensible defaults for all required fields", func() {
// os, architecture, and rootfs are required per https://github.com/opencontainers/image-spec/blob/master/config.md
img, err := remote.NewImage(newTestImageName(), authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, img.Save())
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "linux")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "")
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, runtime.GOARCH)
})
it("fails to save to read-only registry", func() {
readOnlyRepoName := readonlyDockerRegistry.RepoName("pack-image-test" + h.RandString(10))
img, err := remote.NewImage(readOnlyRepoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertError(t, img.Save(), "Method Not Allowed")
})
})
when("#WithDefaultPlatform", func() {
it("sets all platform required fields for windows", func() {
img, err := remote.NewImage(
newTestImageName(),
authn.DefaultKeychain,
remote.WithDefaultPlatform(imgutil.Platform{
Architecture: "arm",
OS: "windows",
Variant: "v1",
OSVersion: "10.0.17763.316",
}),
)
h.AssertNil(t, err)
h.AssertNil(t, img.Save())
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "arm")
os, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, os, "windows")
variant, err := img.Variant()
h.AssertNil(t, err)
h.AssertEq(t, variant, "v1")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "10.0.17763.316")
// base layer is added for windows
topLayerDiffID, err := img.TopLayer()
h.AssertNil(t, err)
h.AssertNotEq(t, topLayerDiffID, "")
})
it("sets all platform required fields for linux", func() {
img, err := remote.NewImage(
newTestImageName(),
authn.DefaultKeychain,
remote.WithDefaultPlatform(imgutil.Platform{
Architecture: "arm",
OS: "linux",
Variant: "v6",
OSVersion: "21.01",
}),
)
h.AssertNil(t, err)
h.AssertNil(t, img.Save())
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "arm")
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "linux")
variant, err := img.Variant()
h.AssertNil(t, err)
h.AssertEq(t, variant, "v6")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "21.01")
_, err = img.TopLayer()
h.AssertError(t, err, "has no layers")
})
})
when("#FromBaseImage", func() {
when("no platform is specified", func() {
when("base image is an individual image manifest", func() {
it("sets the initial state from a linux/arm base image", func() {
baseImageName := "arm64v8/busybox@sha256:50edf1d080946c6a76989d1c3b0e753b62f7d9b5f5e66e88bef23ebbd1e9709c"
existingLayerSha := "sha256:5a0b973aa300cd2650869fd76d8546b361fcd6dfc77bd37b9d4f082cca9874e4"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage(baseImageName),
)
h.AssertNil(t, err)
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "linux")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "")
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "arm64")
readCloser, err := img.GetLayer(existingLayerSha)
h.AssertNil(t, err)
defer readCloser.Close()
})
it("tries to pull the image from an insecure registry if WithRegistrySettings insecure has been set", func() {
_, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage("host.docker.internal/bar"),
remote.WithRegistrySetting("host.docker.internal", true))
h.AssertError(t, err, "http://")
})
it("tries to pull the image from an insecure registry if WithRegistrySettings insecure has been set, it works with multiple registries", func() {
_, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage("myother-insecure-registry.com/repo/superbase"),
remote.WithRegistrySetting("myregistry.domain.com", true),
remote.WithRegistrySetting("myother-insecure-registry.com", true),
)
h.AssertError(t, err, "http://myother-insecure-registry.com")
})
it("sets the initial state from a windows/amd64 base image", func() {
baseImageName := "mcr.microsoft.com/windows/nanoserver@sha256:06281772b6a561411d4b338820d94ab1028fdeb076c85350bbc01e80c4bfa2b4"
existingLayerSha := "sha256:26fd2d9d4c64a4f965bbc77939a454a31b607470f430b5d69fc21ded301fa55e"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage(baseImageName),
)
h.AssertNil(t, err)
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "windows")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "10.0.17763.1040")
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "amd64")
readCloser, err := img.GetLayer(existingLayerSha)
h.AssertNil(t, err)
defer readCloser.Close()
})
})
when("base image is a multi-OS/Arch manifest list", func() {
it("returns a base image matching linux/amd64", func() {
manifestListName := "golang:1.13.8"
existingLayerSha := "sha256:427da4a135b0869c1a274ba38e23d45bdbda93134c4ad99c8900cb0cfe9f0c9e"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage(manifestListName),
)
h.AssertNil(t, err)
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "linux")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "")
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, runtime.GOARCH)
readCloser, err := img.GetLayer(existingLayerSha)
h.AssertNil(t, err)
defer readCloser.Close()
})
})
when("base image does not exist", func() {
it("returns an empty image", func() {
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage("some-bad-repo-name"),
)
h.AssertNil(t, err)
_, err = img.TopLayer()
h.AssertError(t, err, "has no layers")
})
})
})
when("#WithDefaultPlatform", func() {
when("base image is an individual image manifest", func() {
when("platform matches image values", func() {
it("returns the base image", func() {
// "golang:1.15.0-nanoserver-1809" image manifest (windows/amd64/10.0.17763.1397)
windowsImageManifestName := "golang@sha256:6c09e9b9ca3aa2e939c8d0e695d6378f31d42c2473fd57293ba03c254257d9e3"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage(windowsImageManifestName),
remote.WithDefaultPlatform(imgutil.Platform{
Architecture: "amd64",
OS: "windows",
OSVersion: "10.0.17763.1397",
}),
)
h.AssertNil(t, err)
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "amd64")
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "windows")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "10.0.17763.1397")
})
})
when("platform conflicts with image values", func() {
it("returns the base image, regardless of platform values", func() {
// "golang:1.15.0-nanoserver-1809" image manifest (windows/amd64/10.0.17763.1397)
windowsImageManifestName := "golang@sha256:6c09e9b9ca3aa2e939c8d0e695d6378f31d42c2473fd57293ba03c254257d9e3"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage(windowsImageManifestName),
remote.WithDefaultPlatform(imgutil.Platform{
OS: "linux",
Architecture: "arm",
}),
)
h.AssertNil(t, err)
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "amd64")
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "windows")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "10.0.17763.1397")
})
})
})
when("base image is a multi-OS/Arch manifest list", func() {
when("image with matching platform fields exists", func() {
it("returns the image whose index matches the platform", func() {
manifestListName := "golang:1.13.8"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage(manifestListName),
remote.WithDefaultPlatform(imgutil.Platform{
OS: "linux",
Architecture: "amd64",
}),
)
h.AssertNil(t, err)
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "amd64")
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "linux")
})
})
when("no image with matching platform exists", func() {
it("returns an empty image with platform fields set", func() {
manifestListName := "golang:1.13.8"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage(manifestListName),
remote.WithDefaultPlatform(imgutil.Platform{
OS: "windows",
Architecture: "arm",
}),
)
h.AssertNil(t, err)
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "arm")
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "windows")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "")
// base layer is added for Windows
topLayerDiffID, err := img.TopLayer()
h.AssertNil(t, err)
h.AssertNotEq(t, topLayerDiffID, "")
})
})
})
when("base image does not exist", func() {
it("returns an empty linux image based on platform fields", func() {
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage("some-bad-repo-name"),
remote.WithDefaultPlatform(imgutil.Platform{
Architecture: "arm",
OS: "linux",
}),
)
h.AssertNil(t, err)
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "arm")
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "linux")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "")
_, err = img.TopLayer()
h.AssertError(t, err, "has no layers")
})
it("returns an empty windows image based on platform fields", func() {
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.FromBaseImage("some-bad-repo-name"),
remote.WithDefaultPlatform(imgutil.Platform{
Architecture: "arm",
OS: "windows",
OSVersion: "10.0.99999.9999",
}),
)
h.AssertNil(t, err)
arch, err := img.Architecture()
h.AssertNil(t, err)
h.AssertEq(t, arch, "arm")
osName, err := img.OS()
h.AssertNil(t, err)
h.AssertEq(t, osName, "windows")
osVersion, err := img.OSVersion()
h.AssertNil(t, err)
h.AssertEq(t, osVersion, "10.0.99999.9999")
// base layer is added for windows
topLayerDiffID, err := img.TopLayer()
h.AssertNil(t, err)
h.AssertNotEq(t, topLayerDiffID, "")
})
})
})
})
when("#WithPreviousImage", func() {
when("previous image is exists", func() {
it("provides reusable layers", func() {
baseImageName := "arm64v8/busybox@sha256:50edf1d080946c6a76989d1c3b0e753b62f7d9b5f5e66e88bef23ebbd1e9709c"
existingLayerSha := "sha256:5a0b973aa300cd2650869fd76d8546b361fcd6dfc77bd37b9d4f082cca9874e4"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.WithPreviousImage(baseImageName),
)
h.AssertNil(t, err)
h.AssertNil(t, img.ReuseLayer(existingLayerSha))
})
when("#WithDefaultPlatform", func() {
it("provides reusable layers from image in a manifest list with specific platform", func() {
manifestListName := "golang:1.13.8"
existingLayerSha := "sha256:cba908afa240240fceb312eb682bd7660fd5a404ddfd22843852dfdef141314b"
img, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.WithPreviousImage(manifestListName),
remote.WithDefaultPlatform(imgutil.Platform{
OS: "windows",
Architecture: "amd64",
}),
)
h.AssertNil(t, err)
h.AssertNil(t, img.ReuseLayer(existingLayerSha))
})
})
})
when("previous image does not exist", func() {
it("does not error", func() {
_, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.WithPreviousImage("some-bad-repo-name"),
)
h.AssertNil(t, err)
})
})
})
when("#AddEmptyLayerOnSave", func() {
it("an empty layer was added on save", func() {
image, err := remote.NewImage(
repoName,
authn.DefaultKeychain,
remote.AddEmptyLayerOnSave(),
)
h.AssertNil(t, err)
h.AssertNil(t, image.Save())
h.AssertEq(t, len(h.FetchManifestLayers(t, repoName)), 1)
})
})
when("#WithMediaTypes", func() {
it("sets the requested media types", func() {
img, err := remote.NewImage(
newTestImageName(),
authn.DefaultKeychain,
remote.WithMediaTypes(imgutil.OCITypes),
)
h.AssertNil(t, err)
h.AssertOCIMediaTypes(t, img.UnderlyingImage()) // before saving
// add a random layer
newLayerPath, err := h.CreateSingleFileLayerTar("/new-layer.txt", "new-layer", "linux")
h.AssertNil(t, err)
defer os.Remove(newLayerPath)
err = img.AddLayer(newLayerPath)
h.AssertNil(t, err)
h.AssertOCIMediaTypes(t, img.UnderlyingImage()) // after adding a layer
h.AssertNil(t, img.Save())
h.AssertOCIMediaTypes(t, img.UnderlyingImage()) // after saving
})
when("using a base image", func() {
it("sets the requested media types", func() {
baseImageName := newTestImageName()
baseImage, err := remote.NewImage(
baseImageName,
authn.DefaultKeychain,
remote.WithMediaTypes(imgutil.DockerTypes),
)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.Save())
img, err := remote.NewImage(
newTestImageName(),
authn.DefaultKeychain,
remote.WithMediaTypes(imgutil.OCITypes),
remote.FromBaseImage(baseImageName),
)
h.AssertNil(t, err)
h.AssertOCIMediaTypes(t, img.UnderlyingImage()) // before saving
// add a random layer
newLayerPath, err := h.CreateSingleFileLayerTar("/new-layer.txt", "new-layer", "linux")
h.AssertNil(t, err)
defer os.Remove(newLayerPath)
err = img.AddLayer(newLayerPath)
h.AssertNil(t, err)
h.AssertOCIMediaTypes(t, img.UnderlyingImage()) // after adding a layer
h.AssertNil(t, img.Save())
h.AssertOCIMediaTypes(t, img.UnderlyingImage()) // after saving
})
})
})
when("#WithConfig", func() {
var config = &v1.Config{Entrypoint: []string{"some-entrypoint"}}
it("sets the image config", func() {
remoteImage, err := remote.NewImage(newTestImageName(), authn.DefaultKeychain, remote.WithConfig(config))
h.AssertNil(t, err)
entrypoint, err := remoteImage.Entrypoint()
h.AssertNil(t, err)
h.AssertEq(t, entrypoint, []string{"some-entrypoint"})
})
when("#FromBaseImage", func() {
var baseImageName = newTestImageName()
it("overrides the base image config", func() {
baseImage, err := remote.NewImage(baseImageName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.Save())
remoteImage, err := remote.NewImage(
newTestImageName(),
authn.DefaultKeychain,
remote.WithConfig(config),
remote.FromBaseImage(baseImageName),
)
h.AssertNil(t, err)
entrypoint, err := remoteImage.Entrypoint()
h.AssertNil(t, err)
h.AssertEq(t, entrypoint, []string{"some-entrypoint"})
})
})
})
})
when("#WorkingDir", func() {
when("image exists", func() {
var repoName = newTestImageName()
it.Before(func() {
baseImage, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.SetWorkingDir("/testWorkingDir"))
h.AssertNil(t, baseImage.Save())
})
it("returns the WorkingDir value", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
val, err := img.WorkingDir()
h.AssertNil(t, err)
h.AssertEq(t, val, "/testWorkingDir")
})
it("returns empty string for a missing WorkingDir", func() {
baseImage, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.Save())
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
val, err := img.WorkingDir()
h.AssertNil(t, err)
var expected string
h.AssertEq(t, val, expected)
})
})
when("image NOT exists", func() {
it("returns empty string", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
val, err := img.WorkingDir()
h.AssertNil(t, err)
var expected string
h.AssertEq(t, val, expected)
})
})
})
when("#Entrypoint", func() {
when("image exists with entrypoint", func() {
var repoName = newTestImageName()
it.Before(func() {
baseImage, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.SetEntrypoint("entrypoint1", "entrypoint2"))
h.AssertNil(t, baseImage.Save())
})
it("returns the entrypoint value", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
val, err := img.Entrypoint()
h.AssertNil(t, err)
h.AssertEq(t, val, []string{"entrypoint1", "entrypoint2"})
})
it("returns nil slice for a missing entrypoint", func() {
baseImage, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.Save())
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
val, err := img.Entrypoint()
h.AssertNil(t, err)
var expected []string
h.AssertEq(t, val, expected)
})
})
when("image NOT exists", func() {
it("returns nil slice", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
val, err := img.Entrypoint()
h.AssertNil(t, err)
var expected []string
h.AssertEq(t, val, expected)
})
})
})
when("#Labels", func() {
when("image exists with labels", func() {
var repoName = newTestImageName()
it.Before(func() {
baseImage, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.SetLabel("mykey", "myvalue"))
h.AssertNil(t, baseImage.SetLabel("other", "data"))
h.AssertNil(t, baseImage.Save())
})
it("returns all the labels", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
labels, err := img.Labels()
h.AssertNil(t, err)
h.AssertEq(t, labels["mykey"], "myvalue")
h.AssertEq(t, labels["other"], "data")
})
})
when("image exists with no labels", func() {
var repoName = newTestImageName()
it.Before(func() {
baseImage, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.Save())
})
it("returns nil", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
labels, err := img.Labels()
h.AssertNil(t, err)
h.AssertEq(t, 0, len(labels))
})
})
when("image NOT exists", func() {
it("returns nil", func() {
img, err := remote.NewImage(newTestImageName(), authn.DefaultKeychain)
h.AssertNil(t, err)
labels, err := img.Labels()
h.AssertNil(t, err)
h.AssertEq(t, 0, len(labels))
})
})
})
when("#Label", func() {
when("image exists", func() {
it.Before(func() {
baseImage, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.SetLabel("mykey", "myvalue"))
h.AssertNil(t, baseImage.SetLabel("other", "data"))
h.AssertNil(t, baseImage.Save())
})
it("returns the label value", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
label, err := img.Label("mykey")
h.AssertNil(t, err)
h.AssertEq(t, label, "myvalue")
})
it("returns an empty string for a missing label", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(repoName))
h.AssertNil(t, err)
label, err := img.Label("missing-label")
h.AssertNil(t, err)
h.AssertEq(t, label, "")
})
})
when("image is empty", func() {
it("returns an empty label", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
label, err := img.Label("some-label")
h.AssertNil(t, err)
h.AssertEq(t, label, "")
})
})
})
when("#Env", func() {
when("image exists", func() {
var baseImageName = newTestImageName()
it.Before(func() {
baseImage, err := remote.NewImage(baseImageName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, baseImage.SetEnv("MY_VAR", "my_val"))
h.AssertNil(t, baseImage.Save())
})
it("returns the label value", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(baseImageName))
h.AssertNil(t, err)
val, err := img.Env("MY_VAR")
h.AssertNil(t, err)
h.AssertEq(t, val, "my_val")
})
it("returns an empty string for a missing label", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(baseImageName))
h.AssertNil(t, err)
val, err := img.Env("MISSING_VAR")
h.AssertNil(t, err)
h.AssertEq(t, val, "")
})
})
when("image is empty", func() {
it("returns an empty string", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
val, err := img.Env("SOME_VAR")
h.AssertNil(t, err)
h.AssertEq(t, val, "")
})
})
})
when("#Name", func() {
it("always returns the original name", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertEq(t, img.Name(), repoName)
})
})
when("#CreatedAt", func() {
const reference = "busybox@sha256:f79f7a10302c402c052973e3fa42be0344ae6453245669783a9e16da3d56d5b4"
it("returns the containers created at time", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain, remote.FromBaseImage(reference))
h.AssertNil(t, err)
expectedTime := time.Date(2019, 4, 2, 23, 32, 10, 727183061, time.UTC)
createdTime, err := img.CreatedAt()
h.AssertNil(t, err)
h.AssertEq(t, createdTime, expectedTime)
})
})
when("#Identifier", func() {
it("returns a digest reference", func() {
img, err := remote.NewImage(
repoName+":some-tag",
authn.DefaultKeychain,
remote.FromBaseImage("busybox@sha256:915f390a8912e16d4beb8689720a17348f3f6d1a7b659697df850ab625ea29d5"),
)
h.AssertNil(t, err)
identifier, err := img.Identifier()
h.AssertNil(t, err)
h.AssertEq(t, identifier.String(), repoName+"@sha256:915f390a8912e16d4beb8689720a17348f3f6d1a7b659697df850ab625ea29d5")
})
it("accurately parses the reference for an image with a sha", func() {
img, err := remote.NewImage(
repoName+"@sha256:915f390a8912e16d4beb8689720a17348f3f6d1a7b659697df850ab625ea29d5",
authn.DefaultKeychain,
remote.FromBaseImage("busybox@sha256:915f390a8912e16d4beb8689720a17348f3f6d1a7b659697df850ab625ea29d5"),
)
h.AssertNil(t, err)
identifier, err := img.Identifier()
h.AssertNil(t, err)
h.AssertEq(t, identifier.String(), repoName+"@sha256:915f390a8912e16d4beb8689720a17348f3f6d1a7b659697df850ab625ea29d5")
})
when("the image has been modified and saved", func() {
it("returns the new digest reference", func() {
img, err := remote.NewImage(
repoName+":some-tag",
authn.DefaultKeychain,
remote.FromBaseImage("busybox@sha256:915f390a8912e16d4beb8689720a17348f3f6d1a7b659697df850ab625ea29d5"),
)
h.AssertNil(t, err)
h.AssertNil(t, img.SetLabel("new", "label"))
h.AssertNil(t, img.Save())
id, err := img.Identifier()
h.AssertNil(t, err)
testImg, err := remote.NewImage(
"test",
authn.DefaultKeychain,
remote.FromBaseImage(id.String()),
)
h.AssertNil(t, err)
remoteLabel, err := testImg.Label("new")
h.AssertNil(t, err)
h.AssertEq(t, remoteLabel, "label")
})
})
})
when("#SetLabel", func() {
when("image exists", func() {
it("sets label on img object", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, img.SetLabel("mykey", "new-val"))
label, err := img.Label("mykey")
h.AssertNil(t, err)
h.AssertEq(t, label, "new-val")
})
it("saves label", func() {
img, err := remote.NewImage(repoName, authn.DefaultKeychain)
h.AssertNil(t, err)
h.AssertNil(t, img.SetLabel("mykey", "new-val"))