add test case for partially set options

packages/proto-loader/test/descriptor_type_test.ts

@@ -139,7 +139,7 @@ describe('Descriptor types', () => {
     const service = packageDefinition.Hello as proto_loader.ServiceDefinition
     assert.deepStrictEqual(service.Hello.options, {
       deprecated: true,
-      idempotency_level: 'IDEMPOTENCY_UNKNOWN',
+      idempotency_level: 'NO_SIDE_EFFECTS',
       uninterpreted_option: {
         name: {
           name_part: 'foo',
@@ -165,5 +165,17 @@ describe('Descriptor types', () => {
       idempotency_level: 'IDEMPOTENCY_UNKNOWN',
       uninterpreted_option: []
     })
+    assert.deepStrictEqual(service.HelloWithSomeOptions.options, {
+      deprecated: true,
+      idempotency_level: 'IDEMPOTENCY_UNKNOWN',
+      uninterpreted_option: [],
+      '(google.api.http)': {
+        get: "/hello",
+        additional_bindings: {
+          body: '*',
+          get: '/hello-world'
+        }
+      },
+    })
   })
 });

packages/proto-loader/test_protos/method_options.proto

@@ -13,7 +13,7 @@ message MethodSignature {
 service Hello {
   rpc Hello (Empty) returns (Empty) {
     option deprecated = true;
-    option idempotency_level = IDEMPOTENCY_UNKNOWN;
+    option idempotency_level = NO_SIDE_EFFECTS;
     option uninterpreted_option = {
       name: {
         name_part: 'foo'
@@ -35,4 +35,14 @@ service Hello {
     option (google.api.method_signature) = 'bar';
   }
   rpc HelloWithoutOptions (Empty) returns (Empty) {}
+  rpc HelloWithSomeOptions (Empty) returns (Empty) {
+    option deprecated = true;
+    option (google.api.http) = {
+      get: "/hello"
+      additional_bindings: {
+        get: "/hello-world"
+        body: "*"
+      }
+    };
+  }
 }