operator/pkg/workflow: test job

In this commit, we unit test the job workflow in the operator
package on initializing the running data runtime interface and
running tasks and subtasks recursively.

Signed-off-by: Mohamed Awnallah <mohamedmohey2352@gmail.com>

operator/pkg/workflow/job_test.go

@@ -0,0 +1,163 @@
+/*
+Copyright 2024 The Karmada 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 workflow
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+	"testing"
+)
+
+type TestRunData struct {
+	name string
+}
+
+func TestInitData(t *testing.T) {
+	tests := []struct {
+		name        string
+		job         *Job
+		wantRunData RunData
+		wantErr     bool
+		errMsg      string
+	}{
+		{
+			name: "InitData_NoRunDataIsInitialized_InitializeRunDataWithError",
+			job: &Job{
+				runDataInitializer: func() (RunData, error) {
+					return nil, fmt.Errorf("failed to initialize run data")
+				},
+				runData: nil,
+			},
+			wantRunData: nil,
+			wantErr:     true,
+			errMsg:      "failed to initialize run data",
+		},
+		{
+			name: "InitData_NoRunDataIsInitialized_InitializeRunData",
+			job: &Job{
+				runDataInitializer: func() (RunData, error) {
+					return &TestRunData{name: "test"}, nil
+				},
+				runData: nil,
+			},
+			wantRunData: &TestRunData{name: "test"},
+			wantErr:     false,
+		},
+		{
+			name: "InitData_RunDataIsAlreadyInitialized_InitializeRunData",
+			job: &Job{
+				runDataInitializer: func() (RunData, error) {
+					return &TestRunData{name: "test"}, nil
+				},
+				runData: &TestRunData{name: "already-exist"},
+			},
+			wantRunData: &TestRunData{name: "already-exist"},
+			wantErr:     false,
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			runData, err := test.job.initData()
+			if err == nil && test.wantErr {
+				t.Errorf("expected an error, but got none")
+			}
+			if err != nil && !test.wantErr {
+				t.Errorf("unexpected error: %v", err)
+			}
+			if err != nil && test.wantErr && !strings.Contains(err.Error(), test.errMsg) {
+				t.Errorf("expected error msg %s to be part of %s", test.errMsg, err.Error())
+			}
+			if !reflect.DeepEqual(runData, test.wantRunData) {
+				t.Errorf("unmatched run data equality, expected %v but got %v", test.wantRunData, runData)
+			}
+		})
+	}
+}
+
+func TestRun(t *testing.T) {
+	tests := []struct {
+		name        string
+		job         *Job
+		wantRunData RunData
+		wantErr     bool
+		errMsg      string
+	}{
+		{
+			name: "Run_NilRunData_RunDataIsInitialized",
+			job: &Job{
+				runDataInitializer: func() (RunData, error) {
+					return nil, fmt.Errorf("failed to initialize run data")
+				},
+				runData: nil,
+			},
+			wantErr: true,
+			errMsg:  "failed to initialize run data",
+		},
+		{
+			name: "Run_Task_TaskRunSuccessfully",
+			job: &Job{
+				runDataInitializer: func() (RunData, error) {
+					return &TestRunData{name: "test"}, nil
+				},
+				runData: nil,
+				Tasks: []Task{
+					{
+						Name: "SkipRunningTask",
+						Skip: func(RunData) (bool, error) {
+							return true, nil
+						},
+					},
+					{
+						Name: "RunSubTask",
+						Run: func(RunData) error {
+							return nil
+						},
+						Tasks: []Task{
+							{
+								Name: "RunSubTask_2",
+								Run: func(RunData) error {
+									return nil
+								},
+							},
+						},
+						RunSubTasks: true,
+					},
+				},
+			},
+			wantRunData: &TestRunData{name: "test"},
+			wantErr:     false,
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			err := test.job.Run()
+			if err == nil && test.wantErr {
+				t.Errorf("expected an error, but got none")
+			}
+			if err != nil && !test.wantErr {
+				t.Errorf("unexpected error: %v", err)
+			}
+			if err != nil && test.wantErr && !strings.Contains(err.Error(), test.errMsg) {
+				t.Errorf("expected error msg %s to be part of %s", test.errMsg, err.Error())
+			}
+			if !reflect.DeepEqual(test.job.runData, test.wantRunData) {
+				t.Errorf("unmatched run data equality, expected %v but got %v", test.wantRunData, test.job.runData)
+			}
+		})
+	}
+}