diff --git a/cmd/otk-resolve-containers/main_test.go b/cmd/otk-resolve-containers/main_test.go
index eef001e1e5..a62d341e65 100644
--- a/cmd/otk-resolve-containers/main_test.go
+++ b/cmd/otk-resolve-containers/main_test.go
@@ -18,12 +18,6 @@ import (
 	resolver "github.com/osbuild/images/cmd/otk-resolve-containers"
 )
 
-const rootLayer = `H4sIAAAJbogA/+SWUYqDMBCG53lP4V5g9x8dzRX2Bvtc0VIhEIhKe/wSKxgU6ktjC/O9hMzAQDL8
-/8yltdb9DLeB0gEGKhHCg/UJsBAL54zKFBAC54ZzyrCUSMfYDydPgHfu6R/s5VePilOfzF/of/bv
-vG2+lqhyFNGPddP53yjyegCBKcuNROZ77AmBoP+CmbIyqpEM5fqf+3/ubJtsCuz7P1b+L1Du/4f5
-v+vrsVPu/Vq9P3ANk//d+x/MZv8TKNf/Qfqf9v9v5fLXK3/lKEc5ypm4AwAA//8DAE6E6nIAEgAA
-`
-
 const (
 	owner    = "osbuild"
 	reponame = "testcontainer"
@@ -39,7 +33,7 @@ func createTestRegistry() (*testregistry.Registry, []string) {
 	refs := make([]string, 10)
 	for idx := 0; idx < len(refs); idx++ {
 		checksum := repo.AddImage(
-			[]testregistry.Blob{testregistry.NewDataBlobFromBase64(rootLayer)},
+			[]testregistry.Blob{testregistry.NewDataBlobFromBase64(testregistry.RootLayer)},
 			[]string{"amd64", "ppc64le"},
 			fmt.Sprintf("image %d", idx),
 			time.Time{})
diff --git a/internal/testregistry/testregistry.go b/internal/testregistry/testregistry.go
index abc9205cde..e1ef065934 100644
--- a/internal/testregistry/testregistry.go
+++ b/internal/testregistry/testregistry.go
@@ -22,6 +22,22 @@ import (
 	"github.com/osbuild/images/pkg/container"
 )
 
+/*
+A base64 encoded gzipped tarball with the following contents:
+
+	-rw-r--r-- root/root        12 2021-09-17 12:32 hello.txt         (Contents: "Hello World")
+	drwxr-xr-x root/root         0 1970-01-01 01:00 subdir/
+	-rw-r--r-- root/root         8 2021-09-17 12:32 subdir/file.txt   (Contents: "osbuild")
+	-rw-r--r-- root/root         7 2021-09-17 12:32 world.txt         (Contents: "hello!")
+
+Can be used with [NewDataBlobFromBase64] to create a data blob for [Repo.AddImage].
+*/
+const RootLayer = `H4sIAAAJbogA/+SWUYqDMBCG53lP4V5g9x8dzRX2Bvtc0VIhEIhKe/wSKxgU6ktjC/O9hMzAQDL8
+/8yltdb9DLeB0gEGKhHCg/UJsBAL54zKFBAC54ZzyrCUSMfYDydPgHfu6R/s5VePilOfzF/of/bv
+vG2+lqhyFNGPddP53yjyegCBKcuNROZ77AmBoP+CmbIyqpEM5fqf+3/ubJtsCuz7P1b+L1Du/4f5
+v+vrsVPu/Vq9P3ANk//d+x/MZv8TKNf/Qfqf9v9v5fLXK3/lKEc5ypm4AwAA//8DAE6E6nIAEgAA
+`
+
 // The following code implements a toy container registry to test with
 
 // Blob interface
diff --git a/pkg/container/client_test.go b/pkg/container/client_test.go
index 678a963859..0db80f3c4f 100644
--- a/pkg/container/client_test.go
+++ b/pkg/container/client_test.go
@@ -22,7 +22,7 @@ func TestClientResolve(t *testing.T) {
 
 	repo := registry.AddRepo("library/osbuild")
 	listDigest := repo.AddImage(
-		[]testregistry.Blob{testregistry.NewDataBlobFromBase64(rootLayer)},
+		[]testregistry.Blob{testregistry.NewDataBlobFromBase64(testregistry.RootLayer)},
 		[]string{"amd64", "ppc64le"},
 		"cool container",
 		time.Time{})
diff --git a/pkg/container/resolver_test.go b/pkg/container/resolver_test.go
index b14d2d2cb8..6f1fd2fecd 100644
--- a/pkg/container/resolver_test.go
+++ b/pkg/container/resolver_test.go
@@ -17,12 +17,6 @@ import (
 	"github.com/osbuild/images/pkg/container"
 )
 
-const rootLayer = `H4sIAAAJbogA/+SWUYqDMBCG53lP4V5g9x8dzRX2Bvtc0VIhEIhKe/wSKxgU6ktjC/O9hMzAQDL8
-/8yltdb9DLeB0gEGKhHCg/UJsBAL54zKFBAC54ZzyrCUSMfYDydPgHfu6R/s5VePilOfzF/of/bv
-vG2+lqhyFNGPddP53yjyegCBKcuNROZ77AmBoP+CmbIyqpEM5fqf+3/ubJtsCuz7P1b+L1Du/4f5
-v+vrsVPu/Vq9P3ANk//d+x/MZv8TKNf/Qfqf9v9v5fLXK3/lKEc5ypm4AwAA//8DAE6E6nIAEgAA
-`
-
 var forceLocal = flag.Bool(
 	"force-local-resolver",
 	false,
@@ -39,7 +33,7 @@ func TestResolver(t *testing.T) {
 	refs := make([]string, 10)
 	for i := 0; i < len(refs); i++ {
 		checksum := repo.AddImage(
-			[]testregistry.Blob{testregistry.NewDataBlobFromBase64(rootLayer)},
+			[]testregistry.Blob{testregistry.NewDataBlobFromBase64(testregistry.RootLayer)},
 			[]string{"amd64", "ppc64le"},
 			fmt.Sprintf("image %d", i),
 			time.Time{})