Add Utility for testing appservice commands in integration tests.

test/appservice/utils/AppserviceBotCommandClient.ts

@@ -0,0 +1,20 @@
+import { MjolnirAppService } from "../../../src/appservice/AppService";
+import { ReadItem } from "../../../src/commands/interface-manager/CommandReader";
+import { findCommandTable } from "../../../src/commands/interface-manager/InterfaceCommand";
+import { ArgumentStream } from "../../../src/commands/interface-manager/ParamaterParsing";
+import { CommandResult } from "../../../src/commands/interface-manager/Validation";
+
+export class AppservideBotCommandClient {
+    constructor(private readonly appservice: MjolnirAppService) {
+
+    }
+
+    public async sendCommand<CommandReturnType extends CommandResult<any>>(...items: ReadItem[]): Promise<CommandReturnType> {
+        const stream = new ArgumentStream(items);
+        const matchingCommand = findCommandTable("appservice bot").findAMatchingCommand(stream);
+        if (!matchingCommand) {
+            throw new TypeError(`Couldn't finnd a command from these items ${JSON.stringify(items)}`);
+        }
+        return await matchingCommand.parseThenInvoke({ appservice: this.appservice }, ...stream.rest()) as CommandReturnType;
+    }
+}