refactor: preview&apply cmd implementation follow the command cmd pattern

pkg/cmd/apply/apply_test.go

@@ -1,15 +1,337 @@
+// Copyright 2024 KusionStack 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 apply
 
 import (
+	"context"
+	"errors"
+	"os"
+	"path/filepath"
+	"reflect"
 	"testing"
 
+	"github.com/AlecAivazis/survey/v2"
+	"github.com/bytedance/mockey"
 	"github.com/stretchr/testify/assert"
+
+	apiv1 "kusionstack.io/kusion/pkg/apis/api.kusion.io/v1"
+	internalv1 "kusionstack.io/kusion/pkg/apis/internal.kusion.io/v1"
+	v1 "kusionstack.io/kusion/pkg/apis/status/v1"
+	"kusionstack.io/kusion/pkg/backend/storages"
+	"kusionstack.io/kusion/pkg/cmd/generate"
+	"kusionstack.io/kusion/pkg/cmd/meta"
+	"kusionstack.io/kusion/pkg/cmd/preview"
+	"kusionstack.io/kusion/pkg/engine"
+	"kusionstack.io/kusion/pkg/engine/operation"
+	"kusionstack.io/kusion/pkg/engine/operation/models"
+	"kusionstack.io/kusion/pkg/engine/runtime"
+	"kusionstack.io/kusion/pkg/engine/runtime/kubernetes"
+	statestorages "kusionstack.io/kusion/pkg/engine/state/storages"
+	workspacestorages "kusionstack.io/kusion/pkg/workspace/storages"
+)
+
+var (
+	proj = &apiv1.Project{
+		Name: "testdata",
+	}
+	stack = &apiv1.Stack{
+		Name: "dev",
+	}
+	workspace = &apiv1.Workspace{
+		Name: "default",
+	}
+)
+
+func NewApplyOptions() *ApplyOptions {
+	storageBackend := storages.NewLocalStorage(&internalv1.BackendLocalConfig{
+		Path: filepath.Join("", "state.yaml"),
+	})
+	return &ApplyOptions{
+		PreviewOptions: &preview.PreviewOptions{
+			MetaOptions: &meta.MetaOptions{
+				RefProject:     proj,
+				RefStack:       stack,
+				RefWorkspace:   workspace,
+				StorageBackend: storageBackend,
+			},
+			Operator:     "",
+			Detail:       false,
+			All:          false,
+			NoStyle:      false,
+			Output:       "",
+			IgnoreFields: nil,
+		},
+	}
+}
+
+func TestApplyOptionsRun(t *testing.T) {
+	/*mockey.PatchConvey("Detail is true", t, func() {
+		mockGenerateSpecWithSpinner()
+		mockPatchNewKubernetesRuntime()
+		mockPatchOperationPreview()
+		mockStateStorage()
+
+		o := NewApplyOptions()
+		o.Detail = true
+		o.All = true
+		o.NoStyle = true
+		err := o.Run()
+		assert.Nil(t, err)
+	})*/
+
+	mockey.PatchConvey("DryRun is true", t, func() {
+		mockGenerateSpecWithSpinner()
+		mockPatchNewKubernetesRuntime()
+		mockPatchOperationPreview()
+		mockStateStorage()
+		mockOperationApply(models.Success)
+
+		o := NewApplyOptions()
+		o.DryRun = true
+		mockPromptOutput("yes")
+		err := o.Run()
+		assert.Nil(t, err)
+	})
+}
+
+func mockGenerateSpecWithSpinner() {
+	mockey.Mock(generate.GenerateSpecWithSpinner).To(func(
+		project *apiv1.Project,
+		stack *apiv1.Stack,
+		workspace *apiv1.Workspace,
+		parameters map[string]string,
+		noStyle bool,
+	) (*apiv1.Spec, error) {
+		return &apiv1.Spec{Resources: []apiv1.Resource{sa1, sa2, sa3}}, nil
+	}).Build()
+}
+
+func mockPatchNewKubernetesRuntime() *mockey.Mocker {
+	return mockey.Mock(kubernetes.NewKubernetesRuntime).To(func() (runtime.Runtime, error) {
+		return &fakerRuntime{}, nil
+	}).Build()
+}
+
+var _ runtime.Runtime = (*fakerRuntime)(nil)
+
+type fakerRuntime struct{}
+
+func (f *fakerRuntime) Import(_ context.Context, request *runtime.ImportRequest) *runtime.ImportResponse {
+	return &runtime.ImportResponse{Resource: request.PlanResource}
+}
+
+func (f *fakerRuntime) Apply(_ context.Context, request *runtime.ApplyRequest) *runtime.ApplyResponse {
+	return &runtime.ApplyResponse{
+		Resource: request.PlanResource,
+		Status:   nil,
+	}
+}
+
+func (f *fakerRuntime) Read(_ context.Context, request *runtime.ReadRequest) *runtime.ReadResponse {
+	if request.PlanResource.ResourceKey() == "fake-id" {
+		return &runtime.ReadResponse{
+			Resource: nil,
+			Status:   nil,
+		}
+	}
+	return &runtime.ReadResponse{
+		Resource: request.PlanResource,
+		Status:   nil,
+	}
+}
+
+func (f *fakerRuntime) Delete(_ context.Context, _ *runtime.DeleteRequest) *runtime.DeleteResponse {
+	return nil
+}
+
+func (f *fakerRuntime) Watch(_ context.Context, _ *runtime.WatchRequest) *runtime.WatchResponse {
+	return nil
+}
+
+func mockPatchOperationPreview() *mockey.Mocker {
+	return mockey.Mock((*operation.PreviewOperation).Preview).To(func(
+		*operation.PreviewOperation,
+		*operation.PreviewRequest,
+	) (rsp *operation.PreviewResponse, s v1.Status) {
+		return &operation.PreviewResponse{
+			Order: &models.ChangeOrder{
+				StepKeys: []string{sa1.ID, sa2.ID, sa3.ID},
+				ChangeSteps: map[string]*models.ChangeStep{
+					sa1.ID: {
+						ID:     sa1.ID,
+						Action: models.Create,
+						From:   &sa1,
+					},
+					sa2.ID: {
+						ID:     sa2.ID,
+						Action: models.UnChanged,
+						From:   &sa2,
+					},
+					sa3.ID: {
+						ID:     sa3.ID,
+						Action: models.Undefined,
+						From:   &sa1,
+					},
+				},
+			},
+		}, nil
+	}).Build()
+}
+
+func mockStateStorage() {
+	mockey.Mock((*storages.LocalStorage).WorkspaceStorage).Return(&workspacestorages.LocalStorage{}, nil).Build()
+}
+
+const (
+	apiVersion = "v1"
+	kind       = "ServiceAccount"
+	namespace  = "test-ns"
+)
+
+var (
+	sa1 = newSA("sa1")
+	sa2 = newSA("sa2")
+	sa3 = newSA("sa3")
 )
 
-func TestApplyCommandRun(t *testing.T) {
-	t.Run("validate error", func(t *testing.T) {
-		cmd := NewCmdApply()
-		err := cmd.Execute()
+func newSA(name string) apiv1.Resource {
+	return apiv1.Resource{
+		ID:   engine.BuildID(apiVersion, kind, namespace, name),
+		Type: "Kubernetes",
+		Attributes: map[string]interface{}{
+			"apiVersion": apiVersion,
+			"kind":       kind,
+			"metadata": map[string]interface{}{
+				"name":      name,
+				"namespace": namespace,
+			},
+		},
+	}
+}
+
+func TestApply(t *testing.T) {
+	stateStorage := statestorages.NewLocalStorage(filepath.Join("", "state.yaml"))
+	mockey.PatchConvey("dry run", t, func() {
+		planResources := &apiv1.Spec{Resources: []apiv1.Resource{sa1}}
+		order := &models.ChangeOrder{
+			StepKeys: []string{sa1.ID},
+			ChangeSteps: map[string]*models.ChangeStep{
+				sa1.ID: {
+					ID:     sa1.ID,
+					Action: models.Create,
+					From:   sa1,
+				},
+			},
+		}
+		changes := models.NewChanges(proj, stack, order)
+		o := NewApplyOptions()
+		o.DryRun = true
+		err := Apply(o, stateStorage, planResources, changes, os.Stdout)
+		assert.Nil(t, err)
+	})
+	mockey.PatchConvey("apply success", t, func() {
+		mockOperationApply(models.Success)
+		o := NewApplyOptions()
+		planResources := &apiv1.Spec{Resources: []apiv1.Resource{sa1, sa2}}
+		order := &models.ChangeOrder{
+			StepKeys: []string{sa1.ID, sa2.ID},
+			ChangeSteps: map[string]*models.ChangeStep{
+				sa1.ID: {
+					ID:     sa1.ID,
+					Action: models.Create,
+					From:   &sa1,
+				},
+				sa2.ID: {
+					ID:     sa2.ID,
+					Action: models.UnChanged,
+					From:   &sa2,
+				},
+			},
+		}
+		changes := models.NewChanges(proj, stack, order)
+
+		err := Apply(o, stateStorage, planResources, changes, os.Stdout)
+		assert.Nil(t, err)
+	})
+	mockey.PatchConvey("apply failed", t, func() {
+		mockOperationApply(models.Failed)
+
+		o := NewApplyOptions()
+		planResources := &apiv1.Spec{Resources: []apiv1.Resource{sa1}}
+		order := &models.ChangeOrder{
+			StepKeys: []string{sa1.ID},
+			ChangeSteps: map[string]*models.ChangeStep{
+				sa1.ID: {
+					ID:     sa1.ID,
+					Action: models.Create,
+					From:   &sa1,
+				},
+			},
+		}
+		changes := models.NewChanges(proj, stack, order)
+
+		err := Apply(o, stateStorage, planResources, changes, os.Stdout)
 		assert.NotNil(t, err)
 	})
 }
+
+func mockOperationApply(res models.OpResult) {
+	mockey.Mock((*operation.ApplyOperation).Apply).To(
+		func(o *operation.ApplyOperation, request *operation.ApplyRequest) (*operation.ApplyResponse, v1.Status) {
+			var err error
+			if res == models.Failed {
+				err = errors.New("mock error")
+			}
+			for _, r := range request.Intent.Resources {
+				// ing -> $res
+				o.MsgCh <- models.Message{
+					ResourceID: r.ResourceKey(),
+					OpResult:   "",
+					OpErr:      nil,
+				}
+				o.MsgCh <- models.Message{
+					ResourceID: r.ResourceKey(),
+					OpResult:   res,
+					OpErr:      err,
+				}
+			}
+			close(o.MsgCh)
+			if res == models.Failed {
+				return nil, v1.NewErrorStatus(err)
+			}
+			return &operation.ApplyResponse{}, nil
+		}).Build()
+}
+
+func TestPrompt(t *testing.T) {
+	mockey.PatchConvey("prompt error", t, func() {
+		mockey.Mock(survey.AskOne).Return(errors.New("mock error")).Build()
+		_, err := prompt()
+		assert.NotNil(t, err)
+	})
+
+	mockey.PatchConvey("prompt yes", t, func() {
+		mockPromptOutput("yes")
+		_, err := prompt()
+		assert.Nil(t, err)
+	})
+}
+
+func mockPromptOutput(res string) {
+	mockey.Mock(survey.AskOne).To(func(p survey.Prompt, response interface{}, opts ...survey.AskOpt) error {
+		reflect.ValueOf(response).Elem().Set(reflect.ValueOf(res))
+		return nil
+	}).Build()
+}