run command test

Author: baileympearson

src/operations/run_command.ts

@@ -14,7 +14,6 @@ import { type TimeoutContext } from '../timeout';
 import { MongoDBNamespace } from '../utils';
 import { type WriteConcern } from '../write_concern';
 import { ModernizedCommandOperation } from './command';
-import { ModernizedOperation } from './operation';
 
 /** @public */
 export type RunCommandOptions = {
@@ -58,38 +57,23 @@ export class RunCommandOperation<T = Document> extends ModernizedCommandOperatio
   }
 
   override buildOptions(timeoutContext: TimeoutContext): ServerCommandOptions {
-    return { session: this.session, timeoutContext, signal: this.options.signal };
+    return {
+      session: this.session,
+      timeoutContext,
+      signal: this.options.signal,
+      readPreference: this.options.readPreference
+    };
   }
 }
 
-/** @internal */
-export class RunCursorCommandOperation extends ModernizedOperation<CursorResponse> {
+/**
+ * @internal
+ *
+ * A specialized subclass of RunCommandOperation for cursor-creating commands.
+ */
+export class RunCursorCommandOperation extends RunCommandOperation {
   override SERVER_COMMAND_RESPONSE_TYPE = CursorResponse;
-  command: Document;
-  override options: RunCommandOptions & { responseType?: MongoDBResponseConstructor };
-
-  constructor(
-    parent: Db,
-    command: Document,
-    options: RunCommandOptions & { responseType?: MongoDBResponseConstructor }
-  ) {
-    super(options);
-    this.command = command;
-    this.options = options;
-    this.ns = parent.s.namespace.withCollection('$cmd');
-  }
-
-  override get commandName() {
-    return 'runCommand' as const;
-  }
 
-  override buildCommand(_connection: Connection, _session?: ClientSession): Document {
-    return this.command;
-  }
-
-  override buildOptions(timeoutContext: TimeoutContext): ServerCommandOptions {
-    return { session: this.session, timeoutContext };
-  }
   override handleOk(
     response: InstanceType<typeof this.SERVER_COMMAND_RESPONSE_TYPE>
   ): CursorResponse {