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kustomize/kyaml/kio/byteio_writer_test.go
Mengqi Yu 5caed5b90a kyaml/fn/framework ensures the annotation output format matches the input 
If the input only contains legacy format anntations (path, index, id), the
output will be the same.
2021-11-17 14:09:19 -08:00

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// Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package kio_test
import (
"bytes"
"strings"
"testing"
"github.com/stretchr/testify/assert"
. "sigs.k8s.io/kustomize/kyaml/kio"
"sigs.k8s.io/kustomize/kyaml/yaml"
)
func TestByteWriter(t *testing.T) {
type testCase struct {
name string
err string
items []string
functionConfig string
results string
expectedOutput string
instance ByteWriter
}
testCases := []testCase{
//
// Test Case
//
{
name: "wrap_resource_list",
instance: ByteWriter{
Sort: true,
WrappingKind: ResourceListKind,
WrappingAPIVersion: ResourceListAPIVersion,
},
items: []string{
`a: b #first`,
`c: d # second`,
},
functionConfig: `
e: f
g:
h:
- i # has a list
- j`,
expectedOutput: `apiVersion: config.kubernetes.io/v1
kind: ResourceList
items:
- a: b #first
- c: d # second
functionConfig:
e: f
g:
h:
- i # has a list
- j
`,
},
//
// Test Case
//
{
name: "multiple_items",
items: []string{
`c: d # second`,
`e: f
g:
h:
# has a list
- i : [i1, i2] # line comment
# has a list 2
- j : j1
`,
`a: b #first`,
},
expectedOutput: `
c: d # second
---
e: f
g:
h:
# has a list
- i: [i1, i2] # line comment
# has a list 2
- j: j1
---
a: b #first
`,
},
//
// Test Case
//
{
name: "handle_comments",
items: []string{
`# comment 0
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx
namespace: my-space
labels:
env: dev
foo: bar
spec:
# comment 1
replicas: 3
selector:
# comment 2
matchLabels: # comment 3
# comment 4
app: nginx # comment 5
template:
metadata:
labels:
app: nginx
spec:
# comment 6
containers:
# comment 7
- name: nginx
image: nginx:1.14.2 # comment 8
ports:
# comment 9
- containerPort: 80 # comment 10
`,
`apiVersion: v1
kind: Service
metadata:
name: my-service
spec:
ports:
# comment 1
- name: etcd-server-ssl
port: 2380
# comment 2
- name: etcd-client-ssl
port: 2379
`,
`apiVersion: constraints.gatekeeper.sh/v1beta1
kind: EnforceFoo
metadata:
name: enforce-foo
spec:
parameters:
naming_rules:
- kind: Folder
patterns:
# comment 1
- ^(dev|prod|staging|qa|shared)$
`,
},
expectedOutput: `# comment 0
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx
namespace: my-space
labels:
env: dev
foo: bar
spec:
# comment 1
replicas: 3
selector:
# comment 2
matchLabels: # comment 3
# comment 4
app: nginx # comment 5
template:
metadata:
labels:
app: nginx
spec:
# comment 6
containers:
# comment 7
- name: nginx
image: nginx:1.14.2 # comment 8
ports:
# comment 9
- containerPort: 80 # comment 10
---
apiVersion: v1
kind: Service
metadata:
name: my-service
spec:
ports:
# comment 1
- name: etcd-server-ssl
port: 2380
# comment 2
- name: etcd-client-ssl
port: 2379
---
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: EnforceFoo
metadata:
name: enforce-foo
spec:
parameters:
naming_rules:
- kind: Folder
patterns:
# comment 1
- ^(dev|prod|staging|qa|shared)$
`,
},
//
// Test Case
//
{
name: "sort_keep_annotation",
instance: ByteWriter{Sort: true, KeepReaderAnnotations: true},
items: []string{
`a: b #first
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
`,
`e: f
g:
h:
- i # has a list
- j
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/b_test.yaml"
`,
`c: d # second
metadata:
annotations:
internal.config.kubernetes.io/index: 1
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
`,
},
expectedOutput: `a: b #first
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
config.kubernetes.io/path: 'a/b/a_test.yaml'
config.kubernetes.io/index: '0'
---
c: d # second
metadata:
annotations:
internal.config.kubernetes.io/index: 1
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
config.kubernetes.io/path: 'a/b/a_test.yaml'
config.kubernetes.io/index: '1'
---
e: f
g:
h:
- i # has a list
- j
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/b_test.yaml"
config.kubernetes.io/path: 'a/b/b_test.yaml'
config.kubernetes.io/index: '0'
`,
},
//
// Test Case
//
{
name: "sort_partial_annotations",
instance: ByteWriter{Sort: true},
items: []string{
`a: b #first
metadata:
annotations:
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
`,
`c: d # second
metadata:
annotations:
internal.config.kubernetes.io/index: 1
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
`,
`e: f
g:
h:
- i # has a list
- j
`,
},
expectedOutput: `e: f
g:
h:
- i # has a list
- j
---
a: b #first
metadata:
annotations:
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
config.kubernetes.io/path: 'a/b/a_test.yaml'
---
c: d # second
metadata:
annotations:
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
config.kubernetes.io/path: 'a/b/a_test.yaml'
`,
},
//
// Test Case
//
{
name: "keep_annotation_seqindent",
instance: ByteWriter{KeepReaderAnnotations: true},
items: []string{
`a: b #first
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
internal.config.kubernetes.io/index: "compact"
`,
`e: f
g:
h:
- i # has a list
- j
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/b_test.yaml"
internal.config.kubernetes.io/seqindent: "wide"
`,
`c: d # second
metadata:
annotations:
internal.config.kubernetes.io/index: 1
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
internal.config.kubernetes.io/seqindent: "compact"
`,
},
expectedOutput: `a: b #first
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
internal.config.kubernetes.io/index: "compact"
---
e: f
g:
h:
- i # has a list
- j
metadata:
annotations:
internal.config.kubernetes.io/index: 0
internal.config.kubernetes.io/path: "a/b/b_test.yaml"
internal.config.kubernetes.io/seqindent: "wide"
---
c: d # second
metadata:
annotations:
internal.config.kubernetes.io/index: 1
internal.config.kubernetes.io/path: "a/b/a_test.yaml"
internal.config.kubernetes.io/seqindent: "compact"
`,
},
//
// Test Case
//
{
name: "encode_valid_json",
items: []string{
`{
"a": "a long string that would certainly see a newline introduced by the YAML marshaller abcd123",
metadata: {
annotations: {
internal.config.kubernetes.io/path: test.json
}
}
}`,
},
expectedOutput: `{
"a": "a long string that would certainly see a newline introduced by the YAML marshaller abcd123",
"metadata": {
"annotations": {
"internal.config.kubernetes.io/path": "test.json"
}
}
}`,
},
//
// Test Case
//
{
name: "encode_valid_json_remove_seqindent_annotation",
items: []string{
`{
"a": "a long string that would certainly see a newline introduced by the YAML marshaller abcd123",
metadata: {
annotations: {
"internal.config.kubernetes.io/seqindent": "compact",
"internal.config.kubernetes.io/index": "0",
"internal.config.kubernetes.io/path": "test.json"
}
}
}`,
},
expectedOutput: `{
"a": "a long string that would certainly see a newline introduced by the YAML marshaller abcd123",
"metadata": {
"annotations": {
"internal.config.kubernetes.io/path": "test.json"
}
}
}`,
},
//
// Test Case
//
{
name: "encode_unformatted_valid_json",
items: []string{
`{ "a": "b", metadata: { annotations: { internal.config.kubernetes.io/path: test.json } } }`,
},
expectedOutput: `{
"a": "b",
"metadata": {
"annotations": {
"internal.config.kubernetes.io/path": "test.json"
}
}
}`,
},
//
// Test Case
//
{
name: "encode_wrapped_json_as_yaml",
instance: ByteWriter{
Sort: true,
WrappingKind: ResourceListKind,
WrappingAPIVersion: ResourceListAPIVersion,
},
items: []string{
`{
"a": "b",
"metadata": {
"annotations": {
"internal.config.kubernetes.io/path": "test.json"
}
}
}`,
},
expectedOutput: `apiVersion: config.kubernetes.io/v1
kind: ResourceList
items:
- {"a": "b", "metadata": {"annotations": {"internal.config.kubernetes.io/path": "test.json"}}}
`,
},
//
// Test Case
//
{
name: "encode_multi_doc_json_as_yaml",
items: []string{
`{
"a": "b",
"metadata": {
"annotations": {
"internal.config.kubernetes.io/path": "test-1.json"
}
}
}`,
`{
"c": "d",
"metadata": {
"annotations": {
"internal.config.kubernetes.io/path": "test-2.json"
}
}
}`,
},
expectedOutput: `
{"a": "b", "metadata": {"annotations": {"internal.config.kubernetes.io/path": "test-1.json"}}}
---
{"c": "d", "metadata": {"annotations": {"internal.config.kubernetes.io/path": "test-2.json"}}}
`,
},
}
for i := range testCases {
tc := testCases[i]
t.Run(tc.name, func(t *testing.T) {
actual := &bytes.Buffer{}
w := tc.instance
w.Writer = actual
if tc.functionConfig != "" {
w.FunctionConfig = yaml.MustParse(tc.functionConfig)
}
if tc.results != "" {
w.Results = yaml.MustParse(tc.results)
}
var items []*yaml.RNode
for i := range tc.items {
items = append(items, yaml.MustParse(tc.items[i]))
}
err := w.Write(items)
if tc.err != "" {
if !assert.EqualError(t, err, tc.err) {
t.FailNow()
}
return
}
if !assert.NoError(t, err) {
t.FailNow()
}
if !assert.Equal(t,
strings.TrimSpace(tc.expectedOutput), strings.TrimSpace(actual.String())) {
t.FailNow()
}
})
}
}
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