kustomize/pkg/transformers/image_test.go

/*
Copyright 2019 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package transformers

import (
	"reflect"
	"testing"

	"sigs.k8s.io/kustomize/k8sdeps/kunstruct"
	"sigs.k8s.io/kustomize/pkg/gvk"
	"sigs.k8s.io/kustomize/pkg/image"
	"sigs.k8s.io/kustomize/pkg/resid"
	"sigs.k8s.io/kustomize/pkg/resmap"
	"sigs.k8s.io/kustomize/pkg/resource"
)

func TestImageTransformer(t *testing.T) {
	var rf = resource.NewFactory(
		kunstruct.NewKunstructuredFactoryImpl())

	m := resmap.ResMap{
		resid.NewResId(deploy, "deploy1"): rf.FromMap(
			map[string]interface{}{
				"group":      "apps",
				"apiVersion": "v1",
				"kind":       "Deployment",
				"metadata": map[string]interface{}{
					"name": "deploy1",
				},
				"spec": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"initContainers": []interface{}{
								map[string]interface{}{
									"name":  "nginx2",
									"image": "my-nginx:1.8.0",
								},
								map[string]interface{}{
									"name":  "init-alpine",
									"image": "alpine:1.8.0",
								},
							},
							"containers": []interface{}{
								map[string]interface{}{
									"name":  "nginx",
									"image": "nginx:1.7.9",
								},
								map[string]interface{}{
									"name":  "replaced-with-digest",
									"image": "foobar:1",
								},
								map[string]interface{}{
									"name":  "postgresdb",
									"image": "postgres:1.8.0",
								},
							},
						},
					},
				},
			}),
		resid.NewResId(gvk.Gvk{Kind: "randomKind"}, "random"): rf.FromMap(
			map[string]interface{}{
				"spec": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"containers": []interface{}{
								map[string]interface{}{
									"name":  "nginx1",
									"image": "nginx",
								},
							},
						},
					},
				},
				"spec2": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"containers": []interface{}{
								map[string]interface{}{
									"name":  "nginx3",
									"image": "nginx:v1",
								},
								map[string]interface{}{
									"name":  "nginx4",
									"image": "my-nginx:latest",
								},
							},
						},
					},
				},
				"spec3": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"initContainers": []interface{}{
								map[string]interface{}{
									"name":  "postgresdb",
									"image": "postgres:alpine-9",
								},
								map[string]interface{}{
									"name":  "init-docker",
									"image": "docker:17-git",
								},
								map[string]interface{}{
									"name":  "myimage",
									"image": "myprivaterepohostname:1234/my/image:latest",
								},
								map[string]interface{}{
									"name":  "my-app",
									"image": "my-app-image:v1",
								},
								map[string]interface{}{
									"name":  "my-cool-app",
									"image": "gcr.io:8080/my-project/my-cool-app:latest",
								},
							},
						},
					},
				},
			}),
	}
	expected := resmap.ResMap{
		resid.NewResId(deploy, "deploy1"): rf.FromMap(
			map[string]interface{}{
				"group":      "apps",
				"apiVersion": "v1",
				"kind":       "Deployment",
				"metadata": map[string]interface{}{
					"name": "deploy1",
				},
				"spec": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"initContainers": []interface{}{
								map[string]interface{}{
									"name":  "nginx2",
									"image": "my-nginx:previous",
								},
								map[string]interface{}{
									"name":  "init-alpine",
									"image": "myprivaterepohostname:1234/my/cool-alpine:1.8.0",
								},
							},
							"containers": []interface{}{
								map[string]interface{}{
									"name":  "nginx",
									"image": "nginx:v2",
								},
								map[string]interface{}{
									"name":  "replaced-with-digest",
									"image": "foobar@sha256:24a0c4b4a4c0eb97a1aabb8e29f18e917d05abfe1b7a7c07857230879ce7d3d3",
								},
								map[string]interface{}{
									"name":  "postgresdb",
									"image": "my-postgres:v3",
								},
							},
						},
					},
				},
			}),
		resid.NewResId(gvk.Gvk{Kind: "randomKind"}, "random"): rf.FromMap(
			map[string]interface{}{
				"spec": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"containers": []interface{}{
								map[string]interface{}{
									"name":  "nginx1",
									"image": "nginx:v2",
								},
							},
						},
					},
				},
				"spec2": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"containers": []interface{}{
								map[string]interface{}{
									"name":  "nginx3",
									"image": "nginx:v2",
								},
								map[string]interface{}{
									"name":  "nginx4",
									"image": "my-nginx:previous",
								},
							},
						},
					},
				},
				"spec3": map[string]interface{}{
					"template": map[string]interface{}{
						"spec": map[string]interface{}{
							"initContainers": []interface{}{
								map[string]interface{}{
									"name":  "postgresdb",
									"image": "my-postgres:v3",
								},
								map[string]interface{}{
									"name":  "init-docker",
									"image": "my-docker@sha256:25a0d4b4a4c0eb97a1aabb8e29f18e917d05abfe1b7a7c07857230879ce7d3d3",
								},
								map[string]interface{}{
									"name":  "myimage",
									"image": "myprivaterepohostname:1234/my/image:v1.0.1",
								},
								map[string]interface{}{
									"name":  "my-app",
									"image": "gcr.io/my-project/my-app-image:v1",
								},
								map[string]interface{}{
									"name":  "my-cool-app",
									"image": "my-cool-app:latest",
								},
							},
						},
					},
				},
			}),
	}

	it, err := NewImageTransformer([]image.Image{
		{Name: "nginx", NewTag: "v2"},
		{Name: "my-nginx", NewTag: "previous"},
		{Name: "myprivaterepohostname:1234/my/image", NewTag: "v1.0.1"},
		{Name: "foobar", Digest: "sha256:24a0c4b4a4c0eb97a1aabb8e29f18e917d05abfe1b7a7c07857230879ce7d3d3"},
		{Name: "alpine", NewName: "myprivaterepohostname:1234/my/cool-alpine"},
		{Name: "my-app-image", NewName: "gcr.io/my-project/my-app-image"},
		{Name: "gcr.io:8080/my-project/my-cool-app", NewName: "my-cool-app"},
		{Name: "postgres", NewName: "my-postgres", NewTag: "v3"},
		{Name: "docker", NewName: "my-docker", Digest: "sha256:25a0d4b4a4c0eb97a1aabb8e29f18e917d05abfe1b7a7c07857230879ce7d3d3"},
	})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	err = it.Transform(m)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if !reflect.DeepEqual(m, expected) {
		err = expected.ErrorIfNotEqual(m)
		t.Fatalf("actual doesn't match expected: %v. Actual %+v", err, m)
	}
}