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

resolver/manual/manual_test.go

@@ -0,0 +1,63 @@
+/*
+ *
+ * Copyright 2023 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 manual_test
+
+import (
+	"errors"
+	"testing"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/resolver"
+	"google.golang.org/grpc/resolver/manual"
+)
+
+func TestResolver(t *testing.T) {
+	r := manual.NewBuilderWithScheme("whatever")
+	r.InitialState(resolver.State{
+		Addresses: []resolver.Address{
+			{Addr: "address"},
+		},
+	})
+
+	t.Run("cc_panics", func(t *testing.T) {
+		defer func() {
+			want := "Manual resolver instance has not yet been built."
+			if r := recover(); r != want {
+				t.Errorf("expected panic %q, got %q", want, r)
+			}
+		}()
+		r.CC()
+	})
+
+	t.Run("happy_path", func(t *testing.T) {
+		cc, err := grpc.NewClient("whatever://localhost",
+			grpc.WithTransportCredentials(insecure.NewCredentials()),
+			grpc.WithResolvers(r))
+		if err != nil {
+			t.Errorf("grpc.NewClient() failed: %v", err)
+		}
+		defer cc.Close()
+		cc.Connect()
+		r.UpdateState(resolver.State{Addresses: []resolver.Address{
+			{Addr: "ok"},
+		}})
+		r.CC().ReportError(errors.New("example"))
+	})
+}