parser_test.go

Documentation: sigs.k8s.io/structured-merge-diff/v4/typed

     1  /*
     2  Copyright 2019 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 typed_test
    18  
    19  import (
    20  	"io/ioutil"
    21  	"path/filepath"
    22  	"strings"
    23  	"testing"
    24  
    25  	yaml "gopkg.in/yaml.v2"
    26  	"sigs.k8s.io/structured-merge-diff/v4/typed"
    27  )
    28  
    29  func testdata(file string) string {
    30  	return filepath.Join("..", "internal", "testdata", file)
    31  }
    32  
    33  func read(file string) []byte {
    34  	obj, err := ioutil.ReadFile(file)
    35  	if err != nil {
    36  		panic(err)
    37  	}
    38  	return obj
    39  }
    40  
    41  func lastPart(s string) string {
    42  	return s[strings.LastIndex(s, ".")+1:]
    43  }
    44  
    45  func BenchmarkConvertUnstructured(b *testing.B) {
    46  	tests := []struct {
    47  		typename string
    48  		obj      []byte
    49  	}{
    50  		{
    51  			typename: "io.k8s.api.core.v1.Pod",
    52  			obj:      read(testdata("pod.yaml")),
    53  		},
    54  		{
    55  			typename: "io.k8s.api.core.v1.Node",
    56  			obj:      read(testdata("node.yaml")),
    57  		},
    58  		{
    59  			typename: "io.k8s.api.core.v1.Endpoints",
    60  			obj:      read(testdata("endpoints.yaml")),
    61  		},
    62  		{
    63  			typename: "io.k8s.apiextensions-apiserver.pkg.apis.apiextensions.v1beta1.CustomResourceDefinition",
    64  			obj:      read(testdata("prometheus-crd.yaml")),
    65  		},
    66  	}
    67  
    68  	s, err := ioutil.ReadFile(testdata("k8s-schema.yaml"))
    69  	if err != nil {
    70  		b.Fatal(err)
    71  	}
    72  	parser, err := typed.NewParser(typed.YAMLObject(s))
    73  	if err != nil {
    74  		b.Fatal(err)
    75  	}
    76  
    77  	for _, test := range tests {
    78  		pt := parser.Type(test.typename)
    79  
    80  		obj := map[string]interface{}{}
    81  		if err := yaml.Unmarshal(test.obj, &obj); err != nil {
    82  			b.Fatal(err)
    83  		}
    84  
    85  		b.Run(lastPart(test.typename), func(b *testing.B) {
    86  			b.Run("From", func(b *testing.B) {
    87  				b.ReportAllocs()
    88  				b.ResetTimer()
    89  				for n := 0; n < b.N; n++ {
    90  					if _, err := pt.FromUnstructured(obj); err != nil {
    91  						b.Fatal(err)
    92  					}
    93  				}
    94  			})
    95  			b.Run("To", func(b *testing.B) {
    96  				b.ReportAllocs()
    97  				b.ResetTimer()
    98  
    99  				// This test only exists to show that
   100  				// this operation is now instantaneous
   101  				// since it's not needed anymore.
   102  			})
   103  		})
   104  	}
   105  }
   106
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