kubernetes json_yaml_flags_test 源码
kubernetes json_yaml_flags_test 代码
文件路径：/staging/src/k8s.io/cli-runtime/pkg/genericclioptions/json_yaml_flags_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 genericclioptions
import (
"bytes"
"strings"
"testing"
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
func TestPrinterSupportsExpectedJSONYamlFormats(t *testing.T) {
testObject := &v1.Pod{
TypeMeta: metav1.TypeMeta{APIVersion: "v1", Kind: "Pod"},
ObjectMeta: metav1.ObjectMeta{Name: "foo"},
}
testCases := []struct {
name string
outputFormat string
expectedOutput string
expectNoMatch bool
}{
{
name: "json output format matches a json printer",
outputFormat: "json",
expectedOutput: "\"name\": \"foo\"",
},
{
name: "yaml output format matches a yaml printer",
outputFormat: "yaml",
expectedOutput: "name: foo",
},
{
name: "output format for another printer does not match a json/yaml printer",
outputFormat: "jsonpath",
expectNoMatch: true,
},
{
name: "invalid output format results in no match",
outputFormat: "invalid",
expectNoMatch: true,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
printFlags := JSONYamlPrintFlags{}
p, err := printFlags.ToPrinter(tc.outputFormat)
if tc.expectNoMatch {
if !IsNoCompatiblePrinterError(err) {
t.Fatalf("expected no printer matches for output format %q", tc.outputFormat)
}
return
}
if IsNoCompatiblePrinterError(err) {
t.Fatalf("expected to match template printer for output format %q", tc.outputFormat)
}
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
out := bytes.NewBuffer([]byte{})
err = p.PrintObj(testObject, out)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !strings.Contains(out.String(), tc.expectedOutput) {
t.Errorf("unexpected output: expecting %q, got %q", tc.expectedOutput, out.String())
}
})
}
}
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