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/*
Copyright 2021 Intel Corporation
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 kubernetes
import (
"testing"
)
// TestContainerClassFromAnnotations: unit test for ContainerClassFromAnnotations.
func TestContainerClassFromAnnotations(t *testing.T) {
aContainerAnnotation := "io.kubernetes.cri.a-class"
aPodAnnotation := "a.resources.beta.kubernetes.io/pod"
aPodAnnotationContainerPrefix := "a.resources.beta.kubernetes.io/container."
bContainerAnnotation := "io.kubernetes.cri.b-class"
bPodAnnotation := "b.resources.beta.kubernetes.io/pod"
bPodAnnotationContainerPrefix := "b.resources.beta.kubernetes.io/container."
allContainerAnnotations := map[string]string{
aContainerAnnotation: "a-container-class",
bContainerAnnotation: "b-container-class",
}
allPodAnnotations := map[string]string{
aPodAnnotation: "a-pod-class",
aPodAnnotationContainerPrefix + "special-container": "a-pod-container-class",
bPodAnnotation: "b-pod-class",
bPodAnnotationContainerPrefix + "special-container": "b-pod-container-class",
}
tcases := []struct {
name string // the name of the test case
// inputs
lookForCA string // container annotation to look for
lookForPA string // pod annotation to look for
lookForPAC string // pod annotation container prefix to look for
cName string // container name
cAnns map[string]string // container annotations
pAnns map[string]string // pod annotations
// outputs
expectedClass string
expectedOrigin ClassOrigin
}{
{
name: "all empty",
expectedOrigin: ClassOriginNotFound,
},
{
name: "container annotation overrides all pod annotations",
lookForCA: aContainerAnnotation,
lookForPA: aPodAnnotation,
lookForPAC: aPodAnnotationContainerPrefix,
cName: "special-container",
cAnns: allContainerAnnotations,
pAnns: allPodAnnotations,
expectedClass: "a-container-class",
expectedOrigin: ClassOriginContainerAnnotation,
},
{
name: "container prefix overrides default pod annotation",
lookForCA: "not.existing.container.annotation",
lookForPA: bPodAnnotation,
lookForPAC: bPodAnnotationContainerPrefix,
cName: "special-container",
cAnns: allContainerAnnotations,
pAnns: allPodAnnotations,
expectedClass: "b-pod-container-class",
expectedOrigin: ClassOriginPodAnnotation,
},
{
name: "default pod annotation",
lookForCA: "not.existing.container.annotation",
lookForPA: bPodAnnotation,
lookForPAC: bPodAnnotationContainerPrefix,
cName: "ordinary-container",
cAnns: allContainerAnnotations,
pAnns: allPodAnnotations,
expectedClass: "b-pod-class",
expectedOrigin: ClassOriginPodAnnotation,
},
}
for _, tc := range tcases {
t.Run(tc.name, func(t *testing.T) {
observedClass, observedOrigin := ContainerClassFromAnnotations(
tc.lookForCA, tc.lookForPA, tc.lookForPAC,
tc.cName, tc.cAnns, tc.pAnns)
if observedClass != tc.expectedClass {
t.Errorf("expected class %q, observed %q", tc.expectedClass, observedClass)
}
if observedOrigin != tc.expectedOrigin {
t.Errorf("expected origin %q, observed %q", tc.expectedOrigin, observedOrigin)
}
})
}
}
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