k8s.io/client-go@v0.31.1/features/features_test.go (about)

     1  /*
     2  Copyright 2024 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package features
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/stretchr/testify/require"
    23  )
    24  
    25  // TestAddFeaturesToExistingFeatureGates ensures that
    26  // the defaultKubernetesFeatureGates are added to a test feature gates registry.
    27  func TestAddFeaturesToExistingFeatureGates(t *testing.T) {
    28  	fakeFeatureGates := &fakeRegistry{}
    29  	require.NoError(t, AddFeaturesToExistingFeatureGates(fakeFeatureGates))
    30  	require.Equal(t, defaultKubernetesFeatureGates, fakeFeatureGates.specs)
    31  }
    32  
    33  func TestReplaceFeatureGatesWithWarningIndicator(t *testing.T) {
    34  	defaultFeatureGates := FeatureGates()
    35  	require.Panics(t, func() { defaultFeatureGates.Enabled("Foo") }, "reading an unregistered feature gate Foo should panic")
    36  
    37  	if !replaceFeatureGatesWithWarningIndicator(defaultFeatureGates) {
    38  		t.Error("replacing the default feature gates after reading a value hasn't produced a warning")
    39  	}
    40  }
    41  
    42  type fakeRegistry struct {
    43  	specs map[Feature]FeatureSpec
    44  }
    45  
    46  func (f *fakeRegistry) Add(specs map[Feature]FeatureSpec) error {
    47  	f.specs = specs
    48  	return nil
    49  }