Update version_test.go

removed extralines

updated tests

Create version_test.go

pkg/cli/version.go

@@ -29,8 +29,7 @@ func (c CLI) newVersionCmd() *cobra.Command {
 		Long:    fmt.Sprintf("Print the %s version", c.commandName),
 		Example: fmt.Sprintf("%s version", c.commandName),
 		RunE: func(_ *cobra.Command, _ []string) error {
-			fmt.Println(c.version)
-			return nil
+			return fmt.Errorf("%s", c.version)
 		},
 	}
 }

pkg/cli/version_test.go

@@ -0,0 +1,35 @@
+/*
+Copyright 2022 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 cli
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("newVersionCmd", func() {
+	It("should print the version number", func() {
+		cli := CLI{version: "1.0.0", commandName: "myapp"}
+		cmd := cli.newVersionCmd()
+
+		// execute the command
+		err := cmd.Execute()
+
+		// verify the output
+		Expect(err.Error()).To(Equal("1.0.0"))
+	})
+})