added tests covering the debug package

Signed-off-by: Shubham Singh <shubhammahar1306@gmail.com>

8 files changed, 793 insertions, 31 deletions

diff --git a/keadm/cmd/keadm/app/cmd/debug/collect.go b/keadm/cmd/keadm/app/cmd/debug/collect.go
index 65a56801c..d8b4485ba 100644
--- a/keadm/cmd/keadm/app/cmd/debug/collect.go
+++ b/keadm/cmd/keadm/app/cmd/debug/collect.go
@@ -1,3 +1,16 @@
+/*
+Copyright 2024 The KubeEdge 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 debug
 
 import (
@@ -46,14 +59,12 @@ func NewCollect() *cobra.Command {
 	return cmd
 }
 
-// dd flags
+// add flags
 func addCollectOtherFlags(cmd *cobra.Command, collectOptions *common.CollectOptions) {
 	cmd.Flags().StringVarP(&collectOptions.Config, common.EdgecoreConfig, "c", collectOptions.Config,
 		fmt.Sprintf("Specify configuration file, default is %s", common.EdgecoreConfigPath))
 	cmd.Flags().BoolVarP(&collectOptions.Detail, "detail", "d", false,
 		"Whether to print internal log output")
-	//cmd.Flags().StringVar(&collectOptions.OutputPath, "output-path", collectOptions.OutputPath,
-	//	"Cache data and store data compression packages in a directory that default to the current directory")
 	cmd.Flags().StringVarP(&collectOptions.OutputPath, "output-path", "o", collectOptions.OutputPath,
 		"Cache data and store data compression packages in a directory that default to the current directory")
 	cmd.Flags().StringVarP(&collectOptions.LogPath, "log-path", "l", util.KubeEdgeLogPath,
diff --git a/keadm/cmd/keadm/app/cmd/debug/collect_test.go b/keadm/cmd/keadm/app/cmd/debug/collect_test.go
new file mode 100644
index 000000000..38060f9cb
--- /dev/null
+++ b/keadm/cmd/keadm/app/cmd/debug/collect_test.go
@@ -0,0 +1,142 @@
+/*
+Copyright 2024 The KubeEdge 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 debug
+
+import (
+	"testing"
+
+	"github.com/spf13/cobra"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/kubeedge/kubeedge/keadm/cmd/keadm/app/cmd/common"
+	"github.com/kubeedge/kubeedge/keadm/cmd/keadm/app/cmd/util"
+)
+
+func TestCollect_NewCollect(t *testing.T) {
+	assert := assert.New(t)
+	cmd := NewCollect()
+
+	assert.NotNil(cmd)
+	assert.Equal("collect", cmd.Use)
+	assert.Equal("Obtain all the data of the current node", cmd.Short)
+	assert.Equal(edgecollectLongDescription, cmd.Long)
+	assert.Equal(edgecollectExample, cmd.Example)
+	assert.NotNil(cmd.Run)
+
+	subcommands := cmd.Commands()
+	assert.Empty(subcommands)
+
+	expectedFlags := []struct {
+		flagName    string
+		shorthand   string
+		defaultVal  string
+		expectedVal string
+	}{
+		{
+			flagName:    "config",
+			shorthand:   "c",
+			defaultVal:  common.EdgecoreConfigPath,
+			expectedVal: common.EdgecoreConfigPath,
+		},
+		{
+			flagName:    "detail",
+			shorthand:   "d",
+			defaultVal:  "false",
+			expectedVal: "false",
+		},
+		{
+			flagName:    "output-path",
+			shorthand:   "o",
+			defaultVal:  ".",
+			expectedVal: ".",
+		},
+		{
+			flagName:    "log-path",
+			shorthand:   "l",
+			defaultVal:  util.KubeEdgeLogPath,
+			expectedVal: util.KubeEdgeLogPath,
+		},
+	}
+
+	for _, tt := range expectedFlags {
+		t.Run(tt.flagName, func(t *testing.T) {
+			flag := cmd.Flag(tt.flagName)
+			assert.Equal(tt.flagName, flag.Name)
+			assert.Equal(tt.defaultVal, flag.DefValue)
+			assert.Equal(tt.expectedVal, flag.Value.String())
+			assert.Equal(tt.shorthand, flag.Shorthand)
+		})
+	}
+}
+
+func TestCollect_AddCollectOtherFlags(t *testing.T) {
+	assert := assert.New(t)
+	cmd := &cobra.Command{}
+
+	co := newCollectOptions()
+	addCollectOtherFlags(cmd, co)
+
+	expectedFlags := []struct {
+		flagName    string
+		shorthand   string
+		defaultVal  string
+		expectedVal string
+	}{
+		{
+			flagName:    "config",
+			shorthand:   "c",
+			defaultVal:  common.EdgecoreConfigPath,
+			expectedVal: common.EdgecoreConfigPath,
+		},
+		{
+			flagName:    "detail",
+			shorthand:   "d",
+			defaultVal:  "false",
+			expectedVal: "false",
+		},
+		{
+			flagName:    "output-path",
+			shorthand:   "o",
+			defaultVal:  ".",
+			expectedVal: ".",
+		},
+		{
+			flagName:    "log-path",
+			shorthand:   "l",
+			defaultVal:  util.KubeEdgeLogPath,
+			expectedVal: util.KubeEdgeLogPath,
+		},
+	}
+
+	for _, tt := range expectedFlags {
+		t.Run(tt.flagName, func(t *testing.T) {
+			flag := cmd.Flag(tt.flagName)
+			assert.Equal(tt.flagName, flag.Name)
+			assert.Equal(tt.defaultVal, flag.DefValue)
+			assert.Equal(tt.expectedVal, flag.Value.String())
+			assert.Equal(tt.shorthand, flag.Shorthand)
+		})
+	}
+}
+
+func TestCollect_NewCollectOptions(t *testing.T) {
+	assert := assert.New(t)
+	
+	co := newCollectOptions()
+	assert.NotNil(co)
+
+	assert.Equal(common.EdgecoreConfigPath, co.Config)
+	assert.Equal(".", co.OutputPath)
+	assert.Equal(false, co.Detail)
+}
diff --git a/keadm/cmd/keadm/app/cmd/debug/debug_test.go b/keadm/cmd/keadm/app/cmd/debug/debug_test.go
new file mode 100644
index 000000000..81f54f1ad
--- /dev/null
+++ b/keadm/cmd/keadm/app/cmd/debug/debug_test.go
@@ -0,0 +1,43 @@
+/*
+Copyright 2024 The KubeEdge 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 debug
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewEdgeDebug(t *testing.T) {
+	assert := assert.New(t)
+
+	cmd := NewEdgeDebug()
+
+	assert.NotNil(cmd)
+	assert.Equal("debug", cmd.Use)
+	assert.Equal(edgeDebugShortDescription, cmd.Short)
+	assert.Equal(edgeDebugLongDescription, cmd.Long)
+
+	expectedSubCommands := []string{"get", "diagnose", "check", "collect"}
+	for _, subCmd := range expectedSubCommands {
+		found := false
+		for _, cmd := range cmd.Commands() {
+			if cmd.Use == subCmd {
+				found = true
+				break
+			}
+		}
+		assert.True(found)
+	}
+}
diff --git a/keadm/cmd/keadm/app/cmd/debug/diagnose.go b/keadm/cmd/keadm/app/cmd/debug/diagnose.go
index ce5cf2e56..982bbe1d9 100644
--- a/keadm/cmd/keadm/app/cmd/debug/diagnose.go
+++ b/keadm/cmd/keadm/app/cmd/debug/diagnose.go
@@ -1,3 +1,16 @@
+/*
+Copyright 2024 The KubeEdge 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 debug
 
 import (
diff --git a/keadm/cmd/keadm/app/cmd/debug/diagnose_test.go b/keadm/cmd/keadm/app/cmd/debug/diagnose_test.go
new file mode 100644
index 000000000..e6b7b8845
--- /dev/null
+++ b/keadm/cmd/keadm/app/cmd/debug/diagnose_test.go
@@ -0,0 +1,134 @@
+/*
+Copyright 2024 The KubeEdge 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 debug
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/kubeedge/kubeedge/keadm/cmd/keadm/app/cmd/common"
+)
+
+func TestNewDiagnose(t *testing.T) {
+	assert := assert.New(t)
+	cmd := NewDiagnose()
+
+	assert.NotNil(cmd)
+	assert.Equal("diagnose", cmd.Use)
+	assert.Equal(edgeDiagnoseShortDescription, cmd.Short)
+	assert.Equal(edgeDiagnoseLongDescription, cmd.Long)
+	assert.Equal(edgeDiagnoseExample, cmd.Example)
+
+	subcommands := cmd.Commands()
+	assert.NotNil(subcommands)
+}
+
+func TestNewSubDiagnose(t *testing.T) {
+	assert := assert.New(t)
+
+	cases := []struct {
+		use               string
+		expectedDefValue  map[string]string
+		expectedShorthand map[string]string
+		expectedUsage     map[string]string
+	}{
+		{
+			use: common.ArgDiagnoseNode,
+			expectedDefValue: map[string]string{
+				common.EdgecoreConfig: common.EdgecoreConfigPath,
+			},
+			expectedShorthand: map[string]string{
+				common.EdgecoreConfig: "c",
+			},
+			expectedUsage: map[string]string{
+				common.EdgecoreConfig: fmt.Sprintf("Specify configuration file, default is %s", common.EdgecoreConfigPath),
+			},
+		},
+		{
+			use: common.ArgDiagnosePod,
+			expectedDefValue: map[string]string{
+				"namespace": "default",
+			},
+			expectedShorthand: map[string]string{
+				"namespace": "n",
+			},
+			expectedUsage: map[string]string{
+				"namespace": "specify namespace",
+			},
+		},
+		{
+			use: common.ArgDiagnoseInstall,
+			expectedDefValue: map[string]string{
+				"dns-ip":           "",
+				"domain":           "",
+				"ip":               "",
+				"cloud-hub-server": "",
+			},
+			expectedShorthand: map[string]string{
+				"dns-ip":           "D",
+				"domain":           "d",
+				"ip":               "i",
+				"cloud-hub-server": "s",
+			},
+			expectedUsage: map[string]string{
+				"dns-ip":           "specify test dns server ip",
+				"domain":           "specify test domain",
+				"ip":               "specify test ip",
+				"cloud-hub-server": "specify cloudhub server",
+			},
+		},
+	}
+
+	for _, test := range cases {
+		t.Run(test.use, func(t *testing.T) {
+			diagnoseObj := Diagnose{
+				Use:  test.use,
+				Desc: fmt.Sprintf("Diagnose %s", test.use),
+			}
+			cmd := NewSubDiagnose(diagnoseObj)
+
+			assert.NotNil(cmd)
+			assert.Equal(diagnoseObj.Use, cmd.Use)
+			assert.Equal(diagnoseObj.Desc, cmd.Short)
+
+			flags := cmd.Flags()
+			assert.NotNil(flags)
+
+			for flagName, expectedDefValue := range test.expectedDefValue {
+				t.Run(flagName, func(t *testing.T) {
+					flag := flags.Lookup(flagName)
+					assert.NotNil(flag)
+
+					assert.Equal(expectedDefValue, flag.DefValue)
+					assert.Equal(test.expectedShorthand[flagName], flag.Shorthand)
+					assert.Equal(test.expectedUsage[flagName], flag.Usage)
+				})
+			}
+		})
+	}
+}
+
+func TestNewDiagnoseOptions(t *testing.T) {
+	assert := assert.New(t)
+	
+	do := NewDiagnoseOptions()
+	assert.NotNil(do)
+
+	assert.Equal("default", do.Namespace)
+	assert.Equal(common.EdgecoreConfigPath, do.Config)
+	assert.Equal("", do.CheckOptions.IP)
+	assert.Equal(3, do.CheckOptions.Timeout)
+}
diff --git a/keadm/cmd/keadm/app/cmd/debug/get_flags.go b/keadm/cmd/keadm/app/cmd/debug/get_flags.go
index 0ed31e2a9..fbfa5fbc9 100644
--- a/keadm/cmd/keadm/app/cmd/debug/get_flags.go
+++ b/keadm/cmd/keadm/app/cmd/debug/get_flags.go
@@ -104,6 +104,26 @@ func (f *HumanPrintFlags) AllowedFormats() []string {
 	return []string{"wide"}
 }
 
+// NewHumanPrintFlags returns flags associated with
+// human-readable printing, with default values set.
+func NewHumanPrintFlags() *HumanPrintFlags {
+	showLabels := false
+	sortBy := ""
+	showKind := false
+	columnLabels := []string{}
+
+	return &HumanPrintFlags{
+		NoHeaders:     false,
+		WithNamespace: false,
+		ColumnLabels:  &columnLabels,
+
+		Kind:       schema.GroupKind{},
+		ShowLabels: &showLabels,
+		SortBy:     &sortBy,
+		ShowKind:   &showKind,
+	}
+}
+
 // ToPrinter receives an outputFormat and returns a printer capable of
 // handling human-readable output.
 func (f *HumanPrintFlags) ToPrinter(outputFormat string) (printers.ResourcePrinter, error) {
@@ -139,26 +159,6 @@ func (f *HumanPrintFlags) ToPrinter(outputFormat string) (printers.ResourcePrint
 	return p, nil
 }
 
-// NewHumanPrintFlags returns flags associated with
-// human-readable printing, with default values set.
-func NewHumanPrintFlags() *HumanPrintFlags {
-	showLabels := false
-	sortBy := ""
-	showKind := false
-	columnLabels := []string{}
-
-	return &HumanPrintFlags{
-		NoHeaders:     false,
-		WithNamespace: false,
-		ColumnLabels:  &columnLabels,
-
-		Kind:       schema.GroupKind{},
-		ShowLabels: &showLabels,
-		SortBy:     &sortBy,
-		ShowKind:   &showKind,
-	}
-}
-
 // EnsureWithNamespace ensures that humanreadable flags return
 // a printer capable of printing with a "namespace" column.
 func (f *PrintFlags) EnsureWithNamespace() error {
diff --git a/keadm/cmd/keadm/app/cmd/debug/get_flags_test.go b/keadm/cmd/keadm/app/cmd/debug/get_flags_test.go
new file mode 100644
index 000000000..065eceec6
--- /dev/null
+++ b/keadm/cmd/keadm/app/cmd/debug/get_flags_test.go
@@ -0,0 +1,187 @@
+/*
+Copyright 2024 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.
+@CHANGELOG
+KubeEdge Authors: To create keadm debug get function like kubectl get,
+This file is derived from K8S Kubectl code with reduced set of methods
+Changes done are
+1. Package edged got some functions from "k8s.io/kubectl/pkg/cmd/get/get_flags.go"
+and made some variant
+*/
+
+package debug
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+)
+
+func AllowedFormats(t *testing.T) {
+	assert := assert.New(t)
+	printFlags := &PrintFlags{
+		JSONYamlPrintFlags: genericclioptions.NewJSONYamlPrintFlags(),
+		NamePrintFlags:     genericclioptions.NewNamePrintFlags(""),
+		TemplateFlags:      genericclioptions.NewKubeTemplatePrintFlags(),
+		HumanReadableFlags: NewHumanPrintFlags(),
+	}
+
+	formats := printFlags.AllowedFormats()
+	expectedFormats := append(printFlags.JSONYamlPrintFlags.AllowedFormats(), printFlags.HumanReadableFlags.AllowedFormats()...)
+
+	assert.Equal(expectedFormats, formats)
+}
+
+func TestToPrinter(t *testing.T) {
+	assert := assert.New(t)
+
+	printFlags := &PrintFlags{
+		JSONYamlPrintFlags: genericclioptions.NewJSONYamlPrintFlags(),
+		NamePrintFlags:     genericclioptions.NewNamePrintFlags(""),
+		TemplateFlags:      genericclioptions.NewKubeTemplatePrintFlags(),
+		HumanReadableFlags: NewHumanPrintFlags(),
+		NoHeaders:          new(bool),
+		OutputFormat:       new(string),
+	}
+
+	*printFlags.OutputFormat = "json"
+	printer, err := printFlags.ToPrinter()
+	assert.NoError(err)
+	assert.NotNil(printer)
+
+	*printFlags.OutputFormat = "yaml"
+	printer, err = printFlags.ToPrinter()
+	assert.NoError(err)
+	assert.NotNil(printer)
+
+	*printFlags.OutputFormat = "wide"
+	printer, err = printFlags.ToPrinter()
+	assert.NoError(err)
+	assert.NotNil(printer)
+
+	*printFlags.OutputFormat = "unsupported"
+	printer, err = printFlags.ToPrinter()
+	assert.Error(err)
+	assert.Nil(printer)
+
+	*printFlags.OutputFormat = "wide"
+	*printFlags.NoHeaders = true
+	printer, err = printFlags.ToPrinter()
+	assert.NoError(err)
+	assert.NotNil(printer)
+
+	*printFlags.NoHeaders = false
+
+	*printFlags.OutputFormat = ""
+	printer, err = printFlags.ToPrinter()
+	assert.NoError(err)
+	assert.NotNil(printer)
+}
+
+func TestNewGetPrintFlags(t *testing.T) {
+	assert := assert.New(t)
+
+	printFlags := NewGetPrintFlags()
+	assert.NotNil(printFlags)
+
+	assert.IsType(&genericclioptions.JSONYamlPrintFlags{}, printFlags.JSONYamlPrintFlags)
+	assert.IsType(&genericclioptions.NamePrintFlags{}, printFlags.NamePrintFlags)
+	assert.IsType(&genericclioptions.KubeTemplatePrintFlags{}, printFlags.TemplateFlags)
+	assert.IsType(&HumanPrintFlags{}, printFlags.HumanReadableFlags)
+
+	assert.NotNil(printFlags.OutputFormat)
+	assert.Equal("", *printFlags.OutputFormat)
+
+	assert.NotNil(printFlags.NoHeaders)
+	assert.Equal(false, *printFlags.NoHeaders)
+
+	assert.Equal(printFlags.HumanReadableFlags.NoHeaders, false)
+	assert.Equal(printFlags.HumanReadableFlags.WithNamespace, false)
+	assert.Equal(*printFlags.HumanReadableFlags.ShowLabels, false)
+	assert.Equal(*printFlags.HumanReadableFlags.SortBy, "")
+	assert.Equal(*printFlags.HumanReadableFlags.ShowKind, false)
+	assert.Empty(*printFlags.HumanReadableFlags.ColumnLabels)
+}
+
+func TestHumanPrintFlags_AllowedFormats(t *testing.T) {
+	assert := assert.New(t)
+
+	humanPrintFlags := &HumanPrintFlags{}
+	formats := humanPrintFlags.AllowedFormats()
+
+	expectedFormats := []string{"wide"}
+	assert.Equal(expectedFormats, formats)
+}
+
+func TestNewHumanPrintFlags(t *testing.T) {
+	assert := assert.New(t)
+
+	humanPrintFlags := NewHumanPrintFlags()
+	assert.NotNil(humanPrintFlags)
+
+	assert.Equal(humanPrintFlags.NoHeaders, false)
+	assert.Equal(humanPrintFlags.WithNamespace, false)
+	assert.Equal(humanPrintFlags.ColumnLabels, &[]string{})
+	assert.Equal(humanPrintFlags.Kind, schema.GroupKind{})
+	assert.Equal(*humanPrintFlags.ShowLabels, false)
+	assert.Equal(*humanPrintFlags.SortBy, "")
+	assert.Equal(*humanPrintFlags.ShowKind, false)
+}
+
+func TestHumanPrintFlags_ToPrinter(t *testing.T) {
+	assert := assert.New(t)
+
+	humanPrintFlags := &HumanPrintFlags{
+		ShowKind:      new(bool),
+		ShowLabels:    new(bool),
+		SortBy:        new(string),
+		ColumnLabels:  new([]string),
+		NoHeaders:     false,
+		Kind:          schema.GroupKind{},
+		WithNamespace: false,
+	}
+
+	outputFormat := "wide"
+	printer, err := humanPrintFlags.ToPrinter(outputFormat)
+	assert.NoError(err)
+	assert.NotNil(printer)
+
+	outputFormat = ""
+	printer, err = humanPrintFlags.ToPrinter(outputFormat)
+	assert.NoError(err)
+	assert.NotNil(printer)
+
+	outputFormat = "unsupported"
+	printer, err = humanPrintFlags.ToPrinter(outputFormat)
+	assert.Error(err)
+	assert.Nil(printer)
+}
+
+func TestHumanPrintFlags_EnsureWithNamespace(t *testing.T) {
+	assert := assert.New(t)
+	humanPrintFlags := &HumanPrintFlags{}
+
+	err := humanPrintFlags.EnsureWithNamespace()
+
+	assert.NoError(err)
+	assert.Equal(humanPrintFlags.WithNamespace, true)
+}
+
+func Test_EnsureWithNamespace(t *testing.T) {
+	assert := assert.New(t)
+
+	printFlags := NewGetPrintFlags()
+	err := printFlags.EnsureWithNamespace()
+
+	assert.NoError(err)
+}
diff --git a/keadm/cmd/keadm/app/cmd/debug/get_test.go b/keadm/cmd/keadm/app/cmd/debug/get_test.go
index 31e01d264..9fa92e98d 100644
--- a/keadm/cmd/keadm/app/cmd/debug/get_test.go
+++ b/keadm/cmd/keadm/app/cmd/debug/get_test.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 The KubeEdge Authors.
+Copyright 2024 The KubeEdge 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
@@ -14,11 +14,177 @@ limitations under the License.
 package debug
 
 import (
-	"reflect"
+	"errors"
 	"testing"
+
+	"github.com/spf13/cobra"
+	"github.com/stretchr/testify/assert"
+
+	edgecoreCfg "github.com/kubeedge/kubeedge/pkg/apis/componentconfig/edgecore/v1alpha2"
 )
 
+func TestNewCmdDebugGet(t *testing.T) {
+	assert := assert.New(t)
+	cmd := NewCmdDebugGet()
+
+	assert.NotNil(cmd)
+	assert.Equal("get", cmd.Use)
+	assert.Equal("Display one or many resources", cmd.Short)
+	assert.Equal(debugGetLong, cmd.Long)
+	assert.Equal(debugGetExample, cmd.Example)
+
+	assert.NotNil(cmd.Run)
+
+	getOption := NewGetOptions()
+
+	flag := cmd.Flag("namespace")
+	assert.NotNil(flag)
+	assert.Equal(getOption.Namespace, flag.DefValue)
+	assert.Equal("namespace", flag.Name)
+	assert.Equal("n", flag.Shorthand)
+
+	flag = cmd.Flag("output")
+	assert.NotNil(flag)
+	assert.Equal(*getOption.PrintFlags.OutputFormat, flag.DefValue)
+	assert.Equal("output", flag.Name)
+	assert.Equal("o", flag.Shorthand)
+
+	flag = cmd.Flag("selector")
+	assert.NotNil(flag)
+	assert.Equal(getOption.LabelSelector, flag.DefValue)
+	assert.Equal("selector", flag.Name)
+	assert.Equal("l", flag.Shorthand)
+
+	flag = cmd.Flag("edgedb-path")
+	assert.NotNil(flag)
+	assert.Equal(getOption.DataPath, flag.DefValue)
+	assert.Equal("edgedb-path", flag.Name)
+	assert.Equal("p", flag.Shorthand)
+
+	flag = cmd.Flag("all-namespaces")
+	assert.NotNil(flag)
+	assert.Equal(getOption.AllNamespace, flag.DefValue == "true")
+	assert.Equal("all-namespaces", flag.Name)
+	assert.Equal("A", flag.Shorthand)
+}
+
+func TestCheckErr(t *testing.T) {
+	assert := assert.New(t)
+
+	mockHandler := func(msg string, exitCode int) {
+		t.Errorf("handleErr should not be called for nil error")
+	}
+	CheckErr(nil, mockHandler)
+
+	expectedMsg := "Test error"
+	expectedExitCode := DefaultErrorExitCode
+	expectedErr := errors.New(expectedMsg)
+
+	var handledMsg string
+	var handledExitCode int
+
+	mockHandler = func(msg string, exitCode int) {
+		handledMsg = msg
+		handledExitCode = exitCode
+	}
+
+	CheckErr(expectedErr, mockHandler)
+
+	assert.Equal(expectedMsg, handledMsg)
+	assert.Equal(expectedExitCode, handledExitCode)
+}
+
+func TestAddGetOtherFlags(t *testing.T) {
+	getOption := NewGetOptions()
+	cmd := &cobra.Command{}
+
+	addGetOtherFlags(cmd, getOption)
+
+	assert := assert.New(t)
+
+	flag := cmd.Flag("namespace")
+	assert.NotNil(flag)
+	assert.Equal(getOption.Namespace, flag.DefValue)
+	assert.Equal("namespace", flag.Name)
+	assert.Equal("n", flag.Shorthand)
+
+	flag = cmd.Flag("output")
+	assert.NotNil(flag)
+	assert.Equal(*getOption.PrintFlags.OutputFormat, flag.DefValue)
+	assert.Equal("output", flag.Name)
+	assert.Equal("o", flag.Shorthand)
+
+	flag = cmd.Flag("selector")
+	assert.NotNil(flag)
+	assert.Equal(getOption.LabelSelector, flag.DefValue)
+	assert.Equal("selector", flag.Name)
+	assert.Equal("l", flag.Shorthand)
+
+	flag = cmd.Flag("edgedb-path")
+	assert.NotNil(flag)
+	assert.Equal(getOption.DataPath, flag.DefValue)
+	assert.Equal("edgedb-path", flag.Name)
+	assert.Equal("p", flag.Shorthand)
+
+	flag = cmd.Flag("all-namespaces")
+	assert.NotNil(flag)
+	assert.Equal(getOption.AllNamespace, flag.DefValue == "true")
+	assert.Equal("all-namespaces", flag.Name)
+	assert.Equal("A", flag.Shorthand)
+}
+
+func TestNewGetOptions(t *testing.T) {
+	assert := assert.New(t)
+	opts := NewGetOptions()
+
+	assert.NotNil(opts)
+	assert.Equal(opts.Namespace, "default")
+	assert.Equal(opts.DataPath, edgecoreCfg.DataBaseDataSource)
+	assert.Equal(opts.PrintFlags, NewGetPrintFlags())
+}
+
+func TestIsAllowedFormat(t *testing.T) {
+	assert := assert.New(t)
+	getOptions := NewGetOptions()
+
+	tests := []struct {
+		format   string
+		expected bool
+	}{
+		{
+			"yaml",
+			true,
+		},
+		{
+			"json",
+			true,
+		},
+		{
+			"wide",
+			true,
+		},
+		{
+			"xml",
+			false,
+		},
+		{
+			"",
+			false,
+		},
+		{
+			"plain",
+			false,
+		},
+	}
+
+	for _, test := range tests {
+		stdResult := getOptions.IsAllowedFormat(test.format)
+		assert.Equal(test.expected, stdResult)
+	}
+}
+
 func TestSplitSelectorParameters(t *testing.T) {
+	assert := assert.New(t)
 	type args struct {
 		args string
 	}
@@ -37,22 +203,37 @@ func TestSplitSelectorParameters(t *testing.T) {
 				{Key: "key3", Value: "value3", Exist: true},
 			},
 			wantErr: false,
-		}, {
+		},
+		{
 			name:    "testWithoutLabel",
 			args:    args{args: "key1"},
 			want:    []Selector{},
 			wantErr: false,
-		}, {
+		},
+		{
 			name:    "testWithEmptyValue",
 			args:    args{args: "key1!="},
 			want:    []Selector{{Key: "key1", Value: "", Exist: false}},
 			wantErr: false,
-		}, {
+		},
+		{
 			name:    "testWithMoreThanOneLabel",
 			args:    args{args: "key1=value1=,key2=value2"},
 			want:    nil,
 			wantErr: true,
 		},
+		{
+			name:    "testEmptyString",
+			args:    args{args: ""},
+			want:    []Selector{},
+			wantErr: false,
+		},
+		{
+			name:    "testOnlyCommas",
+			args:    args{args: ",,,"},
+			want:    []Selector{},
+			wantErr: false,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -61,9 +242,60 @@ func TestSplitSelectorParameters(t *testing.T) {
 				t.Errorf("SplitSelectorParameters() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			}
-			if !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("SplitSelectorParameters() = %v, want %v", got, tt.want)
-			}
+			assert.Equal(tt.want, got)
+		})
+	}
+}
+
+func TestIsExistName(t *testing.T) {
+	tests := []struct {
+		name     string
+		resNames []string
+		key      string
+		expected bool
+	}{
+		{
+			name:     "Key exists in resNames",
+			resNames: []string{"pod1", "pod2", "pod3"},
+			key:      "pod1",
+			expected: true,
+		},
+		{
+			name:     "Key does not exist in resNames",
+			resNames: []string{"pod1", "pod2", "pod3"},
+			key:      "pod4",
+			expected: false,
+		},
+		{
+			name:     "Empty resNames",
+			resNames: []string{},
+			key:      "pod1",
+			expected: false,
+		},
+		{
+			name:     "Empty key",
+			resNames: []string{"pod1", "pod2", "pod3"},
+			key:      "",
+			expected: false,
+		},
+		{
+			name:     "Key is substring of one element in resNames",
+			resNames: []string{"pod123", "pod2", "pod3"},
+			key:      "pod1",
+			expected: false,
+		},
+		{
+			name:     "ResNames contains special characters",
+			resNames: []string{"pod@123", "pod#2", "pod$3"},
+			key:      "pod@123",
+			expected: true,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			result := isExistName(test.resNames, test.key)
+			assert.Equal(t, test.expected, result)
 		})
 	}
 }