kubeadm: increase ut coverage of util/config

Signed-off-by: xin.li <xin.li@daocloud.io>

cmd/kubeadm/app/util/config/resetconfiguration_test.go

@@ -22,6 +22,9 @@ import (
 	"testing"
 
 	"github.com/lithammer/dedent"
+	"github.com/stretchr/testify/assert"
+
+	kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 )
 
 func TestLoadResetConfigurationFromFile(t *testing.T) {
@@ -98,3 +101,53 @@ func TestLoadResetConfigurationFromFile(t *testing.T) {
 		})
 	}
 }
+
+func TestSetResetDynamicDefaults(t *testing.T) {
+	type args struct {
+		cfg           *kubeadmapi.ResetConfiguration
+		skipCRIDetect bool
+	}
+	tests := []struct {
+		name string
+		args args
+	}{
+		{
+			name: "CRISocket is empty and skipCRIDetect is true",
+			args: args{
+				cfg:           &kubeadmapi.ResetConfiguration{},
+				skipCRIDetect: true,
+			},
+		},
+		{
+			name: "CRISocket is empty and skipCRIDetect is false",
+			args: args{
+				cfg:           &kubeadmapi.ResetConfiguration{},
+				skipCRIDetect: false,
+			},
+		},
+		{
+			name: "CRISocket is valid",
+			args: args{
+				cfg: &kubeadmapi.ResetConfiguration{
+					CRISocket: "unix:///var/run/containerd/containerd.sock",
+				},
+				skipCRIDetect: false,
+			},
+		},
+		{
+			name: "CRISocket is invalid",
+			args: args{
+				cfg: &kubeadmapi.ResetConfiguration{
+					CRISocket: "var/run/containerd/containerd.sock",
+				},
+				skipCRIDetect: false,
+			},
+		},
+	}
+	for _, rt := range tests {
+		t.Run(rt.name, func(t *testing.T) {
+			err := SetResetDynamicDefaults(rt.args.cfg, rt.args.skipCRIDetect)
+			assert.NoError(t, err)
+		})
+	}
+}