111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
/*
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package yaml_test
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import (
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"bytes"
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"io"
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"regexp"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"sigs.k8s.io/yaml"
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utilyaml "opendev.org/airship/airshipctl/pkg/util/yaml"
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)
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// FakeYaml Used to emulate yaml
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type FakeYaml struct {
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Key string
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}
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// FakeErrorDashWriter fake object to simulate errors of writer
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type FakeErrorDashWriter struct {
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Err error
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Match string
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}
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func (f *FakeErrorDashWriter) Write(b []byte) (int, error) {
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if string(b) == f.Match {
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// arbitrary error from io package
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return 0, f.Err
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}
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return len(b), nil
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}
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func TestWriteOut(t *testing.T) {
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// Create some object, that can be marshaled into yaml
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ob := &metav1.ObjectMeta{
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Name: "RandomName",
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Namespace: "uniqueNamespace",
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CreationTimestamp: metav1.NewTime(time.Unix(10, 0)),
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Labels: map[string]string{
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"airshiplabel": "airshipit.org",
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"app": "foo",
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},
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}
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var b bytes.Buffer
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// WriteOut to buffer
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err := utilyaml.WriteOut(&b, ob)
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if err != nil {
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t.Fatalf("Failed to write out yaml: %v", err)
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}
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// Verify result contents
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// TODO (kkalynovskyi) make more reliable tests
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assert.Contains(t, b.String(), ob.Name)
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assert.Contains(t, b.String(), "airshiplabel: airshipit.org")
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assert.Regexp(t, regexp.MustCompile(`^---.*`), b.String())
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assert.Regexp(t, regexp.MustCompile(`.*\.\.\.\n$`), b.String())
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// Create new ObjectMeta for reverse marshaling test.
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var rob metav1.ObjectMeta
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// Check if you can marshal the results of writeout back to the Object
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err = yaml.Unmarshal(b.Bytes(), &rob)
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if err != nil {
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t.Fatalf("Result of write out can not be transformed back into original object: %v", err)
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}
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// Compare original object with reverse marshaled
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assert.Equal(t, ob, &rob)
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}
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func TestWriteOutErrorsWrongYaml(t *testing.T) {
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src := make(chan int)
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var b bytes.Buffer
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assert.Error(t, utilyaml.WriteOut(&b, src))
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}
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func TestWriteOutErrorsErrorWriter(t *testing.T) {
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// Some easy to match yaml
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fakeYaml := FakeYaml{Key: "value"}
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fakeWriter := &FakeErrorDashWriter{Err: io.ErrUnexpectedEOF}
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strings := []string{
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utilyaml.DotYamlSeparator,
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utilyaml.DashYamlSeparator,
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"Key: value\n",
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}
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for _, str := range strings {
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fakeWriter.Match = str
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assert.Error(t, utilyaml.WriteOut(fakeWriter, fakeYaml))
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}
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}
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