Add test for buildQuickSyncPipeline

pkg/app/pipedv1/plugin/kubernetes/deployment/pipeline.go

@@ -47,6 +47,8 @@ const (
 	// StageK8sTrafficRouting represents the state where the traffic to application
 	// should be splitted as the specified percentage to PRIMARY, CANARY, BASELINE variants.
 	StageK8sTrafficRouting Stage = "K8S_TRAFFIC_ROUTING"
+	// StageK8sRollback represents the state where all deployed resources should be rollbacked.
+	StageK8sRollback Stage = "K8S_ROLLBACK"
 )
 
 var AllStages = []Stage{
@@ -57,19 +59,32 @@ var AllStages = []Stage{
 	StageK8sBaselineRollout,
 	StageK8sBaselineClean,
 	StageK8sTrafficRouting,
+	StageK8sRollback,
+}
+
+func (s Stage) String() string {
+	return string(s)
 }
 
 const (
 	PredefinedStageK8sSync  = "K8sSync"
-	PredefinedStageRollback = "Rollback"
+	PredefinedStageRollback = "K8sRollback"
 )
 
 var predefinedStages = map[string]config.PipelineStage{
 	PredefinedStageK8sSync: {
-		ID:   PredefinedStageK8sSync,
-		Name: model.StageK8sSync,
+		ID: PredefinedStageK8sSync,
+		// TODO: we have to change config.PipelineStage.Name to string before releasing pipedv1?
+		// because we don't want to define stages at piped side. We want to define them at the plugin side.
+		// Or plugins should use the model.Stage type instead of string or some defined type.
+		Name: model.Stage(StageK8sSync),
 		Desc: "Sync by applying all manifests",
 	},
+	PredefinedStageRollback: {
+		ID:   PredefinedStageRollback,
+		Name: model.Stage(StageK8sRollback),
+		Desc: "Rollback the deployment",
+	},
 }
 
 // GetPredefinedStage finds and returns the predefined stage for the given id.

pkg/app/pipedv1/plugin/kubernetes/deployment/pipeline_test.go

@@ -0,0 +1,89 @@
+// Copyright 2024 The PipeCD 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 deployment
+
+import (
+	"testing"
+	"time"
+
+	"github.com/pipe-cd/pipecd/pkg/model"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBuildQuickSyncPipeline(t *testing.T) {
+	t.Parallel()
+
+	now := time.Now()
+
+	tests := []struct {
+		name         string
+		autoRollback bool
+		expected     []*model.PipelineStage
+	}{
+		{
+			name:         "without auto rollback",
+			autoRollback: false,
+			expected: []*model.PipelineStage{
+				{
+					Id:         PredefinedStageK8sSync,
+					Name:       StageK8sSync.String(),
+					Desc:       "Sync by applying all manifests",
+					Index:      0,
+					Predefined: true,
+					Visible:    true,
+					Status:     model.StageStatus_STAGE_NOT_STARTED_YET,
+					Metadata:   nil,
+					CreatedAt:  now.Unix(),
+					UpdatedAt:  now.Unix(),
+				},
+			},
+		},
+		{
+			name:         "with auto rollback",
+			autoRollback: true,
+			expected: []*model.PipelineStage{
+				{
+					Id:         PredefinedStageK8sSync,
+					Name:       StageK8sSync.String(),
+					Desc:       "Sync by applying all manifests",
+					Index:      0,
+					Predefined: true,
+					Visible:    true,
+					Status:     model.StageStatus_STAGE_NOT_STARTED_YET,
+					Metadata:   nil,
+					CreatedAt:  now.Unix(),
+					UpdatedAt:  now.Unix(),
+				},
+				{
+					Id:         PredefinedStageRollback,
+					Name:       StageK8sRollback.String(),
+					Desc:       "Rollback the deployment",
+					Predefined: true,
+					Visible:    false,
+					Status:     model.StageStatus_STAGE_NOT_STARTED_YET,
+					CreatedAt:  now.Unix(),
+					UpdatedAt:  now.Unix(),
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			actual := buildQuickSyncPipeline(tt.autoRollback, now)
+			assert.Equal(t, tt.expected, actual)
+		})
+	}
+}