kubernetes version_test 源码
kubernetes version_test 代码
文件路径：/cmd/kubeadm/app/cmd/version_test.go
/*
Copyright 2018 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 cmd
import (
"bytes"
"encoding/json"
"testing"
"github.com/pkg/errors"
"sigs.k8s.io/yaml"
)
func TestNewCmdVersion(t *testing.T) {
var buf bytes.Buffer
cmd := newCmdVersion(&buf)
if err := cmd.Execute(); err != nil {
t.Errorf("Cannot execute version command: %v", err)
}
}
func TestRunVersion(t *testing.T) {
var buf bytes.Buffer
iface := make(map[string]interface{})
flagNameOutput := "output"
cmd := newCmdVersion(&buf)
testCases := []struct {
name string
flag string
expectedError bool
shouldBeValidYAML bool
shouldBeValidJSON bool
}{
{
name: "valid: run without flags",
},
{
name: "valid: run with flag 'short'",
flag: "short",
},
{
name: "valid: run with flag 'yaml'",
flag: "yaml",
shouldBeValidYAML: true,
},
{
name: "valid: run with flag 'json'",
flag: "json",
shouldBeValidJSON: true,
},
{
name: "invalid: run with unsupported flag",
flag: "unsupported-flag",
expectedError: true,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
var err error
if len(tc.flag) > 0 {
if err = cmd.Flags().Set(flagNameOutput, tc.flag); err != nil {
goto error
}
}
buf.Reset()
if err = RunVersion(&buf, cmd); err != nil {
goto error
}
if buf.String() == "" {
err = errors.New("empty output")
goto error
}
if tc.shouldBeValidYAML {
err = yaml.Unmarshal(buf.Bytes(), &iface)
} else if tc.shouldBeValidJSON {
err = json.Unmarshal(buf.Bytes(), &iface)
}
error:
if (err != nil) != tc.expectedError {
t.Errorf("Test case %q: RunVersion expected error: %v, saw: %v; %v", tc.name, tc.expectedError, err != nil, err)
}
})
}
}
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