Add new test that uses an actual production-like pod

Author: Antoine Pelisse

merge/pod_test.go

@@ -0,0 +1,69 @@
+/*
+Copyright 2019 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 merge_test
+
+import (
+	"io/ioutil"
+	"path/filepath"
+	"testing"
+
+	. "sigs.k8s.io/structured-merge-diff/internal/fixture"
+	"sigs.k8s.io/structured-merge-diff/typed"
+)
+
+func testdata(file string) string {
+	return filepath.Join("..", "internal", "testdata", file)
+}
+
+func read(file string) []byte {
+	s, err := ioutil.ReadFile(file)
+	if err != nil {
+		panic(err)
+	}
+	return s
+}
+
+var podParser = func() typed.ParseableType {
+	s := read(testdata("k8s-schema.yaml"))
+	parser, err := typed.NewParser(typed.YAMLObject(s))
+	if err != nil {
+		panic(err)
+	}
+	return parser.Type("io.k8s.api.core.v1.Pod")
+}()
+
+func BenchmarkPodUpdates(b *testing.B) {
+	test := TestCase{
+		Ops: []Operation{
+			Update{
+				Manager:    "controller",
+				APIVersion: "v1",
+				Object:     typed.YAMLObject(read(testdata("pod.yaml"))),
+			},
+		},
+	}
+
+	test.PreprocessOperations(podParser)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+	for n := 0; n < b.N; n++ {
+		if err := test.Bench(podParser); err != nil {
+			b.Fatal(err)
+		}
+	}
+}