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/*
Copyright 2024 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 mutating
import (
"github.com/stretchr/testify/assert"
"testing"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
)
func TestFullReinvocation(t *testing.T) {
key1 := key{PolicyUID: types.NamespacedName{Name: "p1"}, BindingUID: types.NamespacedName{Name: "b1"}}
key2 := key{PolicyUID: types.NamespacedName{Name: "p2"}, BindingUID: types.NamespacedName{Name: "b2"}}
key3 := key{PolicyUID: types.NamespacedName{Name: "p3"}, BindingUID: types.NamespacedName{Name: "b3"}}
cm1v1 := &v1.ConfigMap{Data: map[string]string{"v": "1"}}
cm1v2 := &v1.ConfigMap{Data: map[string]string{"v": "2"}}
rc := policyReinvokeContext{}
// key1 is invoked and it updates the configmap
rc.SetLastPolicyInvocationOutput(cm1v1)
rc.RequireReinvokingPreviouslyInvokedPlugins()
rc.AddReinvocablePolicyToPreviouslyInvoked(key1)
assert.True(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v2))
// key2 is invoked and it updates the configmap
rc.SetLastPolicyInvocationOutput(cm1v2)
rc.RequireReinvokingPreviouslyInvokedPlugins()
rc.AddReinvocablePolicyToPreviouslyInvoked(key2)
assert.True(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v1))
// key3 is invoked but it does not change anything
rc.AddReinvocablePolicyToPreviouslyInvoked(key3)
assert.False(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v2))
// key1 is reinvoked
assert.True(t, rc.ShouldReinvoke(key1))
rc.AddReinvocablePolicyToPreviouslyInvoked(key1)
rc.SetLastPolicyInvocationOutput(cm1v1)
assert.True(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v2))
rc.RequireReinvokingPreviouslyInvokedPlugins()
// key2 is reinvoked
assert.True(t, rc.ShouldReinvoke(key2))
rc.AddReinvocablePolicyToPreviouslyInvoked(key2)
rc.SetLastPolicyInvocationOutput(cm1v2)
assert.True(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v1))
rc.RequireReinvokingPreviouslyInvokedPlugins()
// key3 is reinvoked, because the reinvocations have changed the resource
assert.True(t, rc.ShouldReinvoke(key3))
}
func TestPartialReinvocation(t *testing.T) {
key1 := key{PolicyUID: types.NamespacedName{Name: "p1"}, BindingUID: types.NamespacedName{Name: "b1"}}
key2 := key{PolicyUID: types.NamespacedName{Name: "p2"}, BindingUID: types.NamespacedName{Name: "b2"}}
key3 := key{PolicyUID: types.NamespacedName{Name: "p3"}, BindingUID: types.NamespacedName{Name: "b3"}}
cm1v1 := &v1.ConfigMap{Data: map[string]string{"v": "1"}}
cm1v2 := &v1.ConfigMap{Data: map[string]string{"v": "2"}}
rc := policyReinvokeContext{}
// key1 is invoked and it updates the configmap
rc.SetLastPolicyInvocationOutput(cm1v1)
rc.RequireReinvokingPreviouslyInvokedPlugins()
rc.AddReinvocablePolicyToPreviouslyInvoked(key1)
assert.True(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v2))
// key2 is invoked and it updates the configmap
rc.SetLastPolicyInvocationOutput(cm1v2)
rc.RequireReinvokingPreviouslyInvokedPlugins()
rc.AddReinvocablePolicyToPreviouslyInvoked(key2)
assert.True(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v1))
// key3 is invoked but it does not change anything
rc.AddReinvocablePolicyToPreviouslyInvoked(key3)
assert.False(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v2))
// key1 is reinvoked but does not change anything
assert.True(t, rc.ShouldReinvoke(key1))
// key2 is not reinvoked because nothing changed since last invocation
assert.False(t, rc.ShouldReinvoke(key2))
// key3 is not reinvoked because nothing changed since last invocation
assert.False(t, rc.ShouldReinvoke(key3))
}
func TestNoReinvocation(t *testing.T) {
key1 := key{PolicyUID: types.NamespacedName{Name: "p1"}, BindingUID: types.NamespacedName{Name: "b1"}}
key2 := key{PolicyUID: types.NamespacedName{Name: "p2"}, BindingUID: types.NamespacedName{Name: "b2"}}
key3 := key{PolicyUID: types.NamespacedName{Name: "p3"}, BindingUID: types.NamespacedName{Name: "b3"}}
cm1v1 := &v1.ConfigMap{Data: map[string]string{"v": "1"}}
rc := policyReinvokeContext{}
// key1 is invoked and it updates the configmap
rc.AddReinvocablePolicyToPreviouslyInvoked(key1)
rc.SetLastPolicyInvocationOutput(cm1v1)
assert.False(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v1))
// key2 is invoked but does not change anything
rc.AddReinvocablePolicyToPreviouslyInvoked(key2)
rc.SetLastPolicyInvocationOutput(cm1v1)
assert.False(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v1))
// key3 is invoked but it does not change anything
rc.AddReinvocablePolicyToPreviouslyInvoked(key3)
rc.SetLastPolicyInvocationOutput(cm1v1)
assert.False(t, rc.IsOutputChangedSinceLastPolicyInvocation(cm1v1))
// no keys are reinvoked
assert.False(t, rc.ShouldReinvoke(key1))
assert.False(t, rc.ShouldReinvoke(key2))
assert.False(t, rc.ShouldReinvoke(key3))
}
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