snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

orca/orca_test.go

@@ -0,0 +1,102 @@
+/*
+ *
+ * Copyright 2022 gRPC 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 orca_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+	"google.golang.org/grpc/internal/grpctest"
+	"google.golang.org/grpc/internal/pretty"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/orca/internal"
+	"google.golang.org/protobuf/proto"
+
+	v3orcapb "github.com/cncf/xds/go/xds/data/orca/v3"
+)
+
+type s struct {
+	grpctest.Tester
+}
+
+func Test(t *testing.T) {
+	grpctest.RunSubTests(t, s{})
+}
+
+const defaultTestTimeout = 5 * time.Second
+
+func (s) TestToLoadReport(t *testing.T) {
+	goodReport := &v3orcapb.OrcaLoadReport{
+		CpuUtilization: 1.0,
+		MemUtilization: 50.0,
+		RequestCost:    map[string]float64{"queryCost": 25.0},
+		Utilization:    map[string]float64{"queueSize": 75.0},
+	}
+	tests := []struct {
+		name    string
+		md      metadata.MD
+		want    *v3orcapb.OrcaLoadReport
+		wantErr bool
+	}{
+		{
+			name:    "no load report in metadata",
+			md:      metadata.MD{},
+			wantErr: false,
+		},
+		{
+			name: "badly marshaled load report",
+			md: func() metadata.MD {
+				return metadata.Pairs("endpoint-load-metrics-bin", string("foo-bar"))
+			}(),
+			wantErr: true,
+		},
+		{
+			name: "multiple load reports",
+			md: func() metadata.MD {
+				b, _ := proto.Marshal(goodReport)
+				return metadata.Pairs("endpoint-load-metrics-bin", string(b), "endpoint-load-metrics-bin", string(b))
+			}(),
+			wantErr: true,
+		},
+		{
+			name: "good load report",
+			md: func() metadata.MD {
+				b, _ := proto.Marshal(goodReport)
+				return metadata.Pairs("endpoint-load-metrics-bin", string(b))
+			}(),
+			want: goodReport,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			got, err := internal.ToLoadReport(test.md)
+			if (err != nil) != test.wantErr {
+				t.Fatalf("orca.ToLoadReport(%v) = %v, wantErr: %v", test.md, err, test.wantErr)
+			}
+			if test.wantErr {
+				return
+			}
+			if !cmp.Equal(got, test.want, cmp.Comparer(proto.Equal)) {
+				t.Fatalf("Extracted load report from metadata: %s, want: %s", pretty.ToJSON(got), pretty.ToJSON(test.want))
+			}
+		})
+	}
+}