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chain_test.go
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chain_test.go
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/*
Copyright 2015 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 admission
import (
"fmt"
"testing"
"k8s.io/kubernetes/pkg/api/unversioned"
)
type FakeHandler struct {
*Handler
name string
admit bool
admitCalled bool
}
func (h *FakeHandler) Admit(a Attributes) (err error) {
h.admitCalled = true
if h.admit {
return nil
}
return fmt.Errorf("Don't admit")
}
func makeHandler(name string, admit bool, ops ...Operation) Interface {
return &FakeHandler{
name: name,
admit: admit,
Handler: NewHandler(ops...),
}
}
func TestAdmit(t *testing.T) {
tests := []struct {
name string
operation Operation
chain chainAdmissionHandler
accept bool
calls map[string]bool
}{
{
name: "all accept",
operation: Create,
chain: []Interface{
makeHandler("a", true, Update, Delete, Create),
makeHandler("b", true, Delete, Create),
makeHandler("c", true, Create),
},
calls: map[string]bool{"a": true, "b": true, "c": true},
accept: true,
},
{
name: "ignore handler",
operation: Create,
chain: []Interface{
makeHandler("a", true, Update, Delete, Create),
makeHandler("b", false, Delete),
makeHandler("c", true, Create),
},
calls: map[string]bool{"a": true, "c": true},
accept: true,
},
{
name: "ignore all",
operation: Connect,
chain: []Interface{
makeHandler("a", true, Update, Delete, Create),
makeHandler("b", false, Delete),
makeHandler("c", true, Create),
},
calls: map[string]bool{},
accept: true,
},
{
name: "reject one",
operation: Delete,
chain: []Interface{
makeHandler("a", true, Update, Delete, Create),
makeHandler("b", false, Delete),
makeHandler("c", true, Create),
},
calls: map[string]bool{"a": true, "b": true},
accept: false,
},
}
for _, test := range tests {
err := test.chain.Admit(NewAttributesRecord(nil, nil, unversioned.GroupVersionKind{}, "", "", unversioned.GroupVersionResource{}, "", test.operation, nil))
accepted := (err == nil)
if accepted != test.accept {
t.Errorf("%s: unexpected result of admit call: %v\n", test.name, accepted)
}
for _, h := range test.chain {
fake := h.(*FakeHandler)
_, shouldBeCalled := test.calls[fake.name]
if shouldBeCalled != fake.admitCalled {
t.Errorf("%s: handler %s not called as expected: %v", test.name, fake.name, fake.admitCalled)
continue
}
}
}
}
func TestHandles(t *testing.T) {
chain := chainAdmissionHandler{
makeHandler("a", true, Update, Delete, Create),
makeHandler("b", true, Delete, Create),
makeHandler("c", true, Create),
}
tests := []struct {
name string
operation Operation
chain chainAdmissionHandler
expected bool
}{
{
name: "all handle",
operation: Create,
expected: true,
},
{
name: "none handle",
operation: Connect,
expected: false,
},
{
name: "some handle",
operation: Delete,
expected: true,
},
}
for _, test := range tests {
handles := chain.Handles(test.operation)
if handles != test.expected {
t.Errorf("Unexpected handles result. Expected: %v. Actual: %v", test.expected, handles)
}
}
}