github.com/nmstate/kubernetes-nmstate@v0.82.0/pkg/node/nodes_test.go (about)

     1  /*
     2  Copyright The Kubernetes NMState Authors.
     3  
     4  
     5  Licensed under the Apache License, Version 2.0 (the "License");
     6  you may not use this file except in compliance with the License.
     7  You may obtain a copy of the License at
     8  
     9      http://www.apache.org/licenses/LICENSE-2.0
    10  
    11  Unless required by applicable law or agreed to in writing, software
    12  distributed under the License is distributed on an "AS IS" BASIS,
    13  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14  See the License for the specific language governing permissions and
    15  limitations under the License.
    16  */
    17  
    18  package node
    19  
    20  import (
    21  	. "github.com/onsi/ginkgo/v2"
    22  	. "github.com/onsi/gomega"
    23  
    24  	"github.com/onsi/gomega/types"
    25  	"k8s.io/apimachinery/pkg/util/intstr"
    26  )
    27  
    28  var _ = Describe("MaxUnavailable nodes", func() {
    29  	type maxUnavailableCase struct {
    30  		nmstateEnabledNodes          int
    31  		maxUnavailable               intstr.IntOrString
    32  		expectedScaledMaxUnavailable int
    33  		expectedError                types.GomegaMatcher
    34  	}
    35  	DescribeTable("testing ScaledMaxUnavailableNodeCount",
    36  		func(c maxUnavailableCase) {
    37  			maxUnavailable, err := ScaledMaxUnavailableNodeCount(c.nmstateEnabledNodes, c.maxUnavailable)
    38  			Expect(err).To(c.expectedError)
    39  			Expect(maxUnavailable).To(Equal(c.expectedScaledMaxUnavailable))
    40  		},
    41  		Entry("Default maxUnavailable with odd number of nodes",
    42  			maxUnavailableCase{
    43  				nmstateEnabledNodes:          5,
    44  				maxUnavailable:               intstr.FromString(DefaultMaxunavailable),
    45  				expectedScaledMaxUnavailable: 3,
    46  				expectedError:                Not(HaveOccurred()),
    47  			}),
    48  		Entry("Default maxUnavailable with even number of nodes",
    49  			maxUnavailableCase{
    50  				nmstateEnabledNodes:          6,
    51  				maxUnavailable:               intstr.FromString(DefaultMaxunavailable),
    52  				expectedScaledMaxUnavailable: 3,
    53  				expectedError:                Not(HaveOccurred()),
    54  			}),
    55  		Entry("Absolute maxUnavailable with odd number of nodes",
    56  			maxUnavailableCase{
    57  				nmstateEnabledNodes:          5,
    58  				maxUnavailable:               intstr.FromInt(3),
    59  				expectedScaledMaxUnavailable: 3,
    60  				expectedError:                Not(HaveOccurred()),
    61  			}),
    62  		Entry("Absolute maxUnavailable with even number of nodes",
    63  			maxUnavailableCase{
    64  				nmstateEnabledNodes:          6,
    65  				maxUnavailable:               intstr.FromInt(3),
    66  				expectedScaledMaxUnavailable: 3,
    67  				expectedError:                Not(HaveOccurred()),
    68  			}),
    69  		Entry("Wrong string value",
    70  			maxUnavailableCase{
    71  				nmstateEnabledNodes:          5,
    72  				maxUnavailable:               intstr.FromString("asdf"),
    73  				expectedScaledMaxUnavailable: 3,
    74  				expectedError:                HaveOccurred(),
    75  			}),
    76  		Entry("Absolute value in string",
    77  			maxUnavailableCase{
    78  				nmstateEnabledNodes:          5,
    79  				maxUnavailable:               intstr.FromString("42"),
    80  				expectedScaledMaxUnavailable: 3,
    81  				expectedError:                HaveOccurred(),
    82  			}),
    83  		Entry("Zero percent",
    84  			maxUnavailableCase{
    85  				nmstateEnabledNodes:          5,
    86  				maxUnavailable:               intstr.FromString("0%"),
    87  				expectedScaledMaxUnavailable: 1,
    88  				expectedError:                Not(HaveOccurred()),
    89  			}),
    90  		Entry("Zero value",
    91  			maxUnavailableCase{
    92  				nmstateEnabledNodes:          5,
    93  				maxUnavailable:               intstr.FromInt(0),
    94  				expectedScaledMaxUnavailable: 1,
    95  				expectedError:                Not(HaveOccurred()),
    96  			}))
    97  })