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

internal/xds/balancer/clusterimpl/config_test.go

@@ -0,0 +1,132 @@
+/*
+ *
+ * Copyright 2020 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 clusterimpl
+
+import (
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"google.golang.org/grpc/balancer"
+	_ "google.golang.org/grpc/balancer/roundrobin"
+	_ "google.golang.org/grpc/balancer/weightedtarget"
+	internalserviceconfig "google.golang.org/grpc/internal/serviceconfig"
+)
+
+const (
+	testJSONConfig = `{
+  "cluster": "test_cluster",
+  "edsServiceName": "test-eds",
+  "lrsLoadReportingServer": {
+    "server_uri": "trafficdirector.googleapis.com:443",
+    "channel_creds": [ { "type": "google_default" } ]
+  },
+  "maxConcurrentRequests": 123,
+  "dropCategories": [
+    {
+      "category": "drop-1",
+      "requestsPerMillion": 314
+    },
+    {
+      "category": "drop-2",
+      "requestsPerMillion": 159
+    }
+  ],
+  "childPolicy": [
+    {
+      "weighted_target_experimental": {
+        "targets": {
+          "wt-child-1": {
+            "weight": 75,
+            "childPolicy":[{"round_robin":{}}]
+          },
+          "wt-child-2": {
+            "weight": 25,
+            "childPolicy":[{"round_robin":{}}]
+          }
+        }
+      }
+    }
+  ]
+}`
+
+	wtName = "weighted_target_experimental"
+)
+
+var (
+	wtConfigParser = balancer.Get(wtName).(balancer.ConfigParser)
+	wtConfigJSON   = `{
+  "targets": {
+    "wt-child-1": {
+      "weight": 75,
+      "childPolicy":[{"round_robin":{}}]
+    },
+    "wt-child-2": {
+      "weight": 25,
+      "childPolicy":[{"round_robin":{}}]
+    }
+  }
+}`
+
+	wtConfig, _ = wtConfigParser.ParseConfig([]byte(wtConfigJSON))
+)
+
+func (s) TestParseConfig(t *testing.T) {
+	tests := []struct {
+		name    string
+		js      string
+		want    *LBConfig
+		wantErr bool
+	}{
+		{
+			name:    "empty json",
+			js:      "",
+			want:    nil,
+			wantErr: true,
+		},
+		{
+			name:    "bad json",
+			js:      "{",
+			want:    nil,
+			wantErr: true,
+		},
+		{
+			name: "OK",
+			js:   testJSONConfig,
+			want: &LBConfig{
+				Cluster: "test_cluster",
+				ChildPolicy: &internalserviceconfig.BalancerConfig{
+					Name:   wtName,
+					Config: wtConfig,
+				},
+			},
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := parseConfig([]byte(tt.js))
+			if (err != nil) != tt.wantErr {
+				t.Fatalf("parseConfig() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			if diff := cmp.Diff(tt.want, got); diff != "" {
+				t.Errorf("parseConfig() got unexpected diff (-want, +got): %v", diff)
+			}
+		})
+	}
+}