istio.io/istio@v0.0.0-20240520182934-d79c90f27776/tests/fuzz/status_fuzzer.go (about)

     1  // Copyright Istio Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package fuzz
    16  
    17  import (
    18  	fuzz "github.com/AdaLogics/go-fuzz-headers"
    19  
    20  	"istio.io/api/meta/v1alpha1"
    21  	"istio.io/istio/pilot/pkg/status/distribution"
    22  )
    23  
    24  // FuzzReconcileStatuses implements a fuzzer that targets
    25  // status.ReconcileStatuses. It does so by inserting
    26  // pseudo-random vlues in the config and the progress
    27  // as well as pass a pseudo-random generation parameter.
    28  func FuzzReconcileStatuses(data []byte) int {
    29  	f := fuzz.NewConsumer(data)
    30  	current := &v1alpha1.IstioStatus{}
    31  	err := f.GenerateStruct(current)
    32  	if err != nil {
    33  		return 0
    34  	}
    35  	desired := distribution.Progress{}
    36  	err = f.GenerateStruct(&desired)
    37  	if err != nil {
    38  		return 0
    39  	}
    40  	_, _ = distribution.ReconcileStatuses(current, desired)
    41  	return 1
    42  }