kubeadm: increase ut coverage for app/util

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

cmd/kubeadm/app/util/copy_test.go

@@ -0,0 +1,89 @@
+/*
+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.
+*/
+
+package util
+
+import (
+	"os"
+	"testing"
+)
+
+func TestCopyFile(t *testing.T) {
+	tmpdir, err := os.MkdirTemp("", "")
+	if err != nil {
+		t.Fatal("Failed to create temporary directory")
+	}
+	defer func() {
+		err = os.RemoveAll(tmpdir)
+		if err != nil {
+			t.Fatal("Failed to remove temporary directory")
+		}
+	}()
+	tmpfile, err := os.CreateTemp(tmpdir, "")
+	if err != nil {
+		t.Fatalf("Failed to create temporary file")
+	}
+	restrictedFile, err := os.CreateTemp(tmpdir, "")
+	if err != nil {
+		t.Fatal("Failed to create temporary restricted file")
+	}
+	err = restrictedFile.Chmod(0000)
+	if err != nil {
+		t.Fatal("Failed to change file mode")
+	}
+
+	type args struct {
+		src  string
+		dest string
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			name: "src file does not exist",
+			args: args{
+				src:  "foo",
+				dest: tmpdir + "bar",
+			},
+			wantErr: true,
+		},
+		{
+			name: "src file exists",
+			args: args{
+				src:  tmpfile.Name(),
+				dest: tmpdir + "bar",
+			},
+			wantErr: false,
+		},
+		{
+			name: "src file cannot be read or written",
+			args: args{
+				src:  restrictedFile.Name(),
+				dest: tmpdir + "bar",
+			},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := CopyFile(tt.args.src, tt.args.dest); (err != nil) != tt.wantErr {
+				t.Errorf("CopyFile() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}

cmd/kubeadm/app/util/marshal_test.go

@@ -431,3 +431,35 @@ func TestGroupVersionKindsHasResetConfiguration(t *testing.T) {
 		})
 	}
 }
+
+func TestGroupVersionKindsHasClusterConfiguration(t *testing.T) {
+	tests := []struct {
+		name     string
+		gvks     []schema.GroupVersionKind
+		expected bool
+	}{
+		{
+			name: "does not have ClusterConfiguraiton",
+			gvks: []schema.GroupVersionKind{
+				{Group: "foo.k8s.io", Version: "v1", Kind: "Foo"},
+			},
+			expected: false,
+		},
+		{
+			name: "has ClusterConfiguraiton",
+			gvks: []schema.GroupVersionKind{
+				{Group: "foo.k8s.io", Version: "v1", Kind: "Foo"},
+				{Group: "foo.k8s.io", Version: "v1", Kind: "ClusterConfiguration"},
+			},
+			expected: true,
+		},
+	}
+	for _, rt := range tests {
+		t.Run(rt.name, func(t *testing.T) {
+			actual := GroupVersionKindsHasClusterConfiguration(rt.gvks...)
+			if rt.expected != actual {
+				t.Errorf("expected gvks to have a ClusterConfiguration: %t\n\tactual: %t\n", rt.expected, actual)
+			}
+		})
+	}
+}