Add more arc tests (#11051)

* Add more arc tests

* fix errors

extensions/arc/src/test/stubs.ts

@@ -0,0 +1,61 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+
+export class MockInputBox implements vscode.InputBox {
+	private _value: string = '';
+	public get value(): string {
+		return this._value;
+	}
+	public set value(newValue: string) {
+		this._value = newValue;
+		if (this._onDidChangeValueCallback) {
+			this._onDidChangeValueCallback(this._value);
+		}
+	}
+	placeholder: string | undefined;
+	password: boolean = false;
+	private _onDidChangeValueCallback: ((e: string) => any) | undefined = undefined;
+	onDidChangeValue: vscode.Event<string> = (listener) => {
+		this._onDidChangeValueCallback = listener;
+		return new vscode.Disposable(() => { });
+	};
+	private _onDidAcceptCallback: ((e: void) => any) | undefined = undefined;
+	public onDidAccept: vscode.Event<void> = (listener) => {
+		this._onDidAcceptCallback = listener;
+		return new vscode.Disposable(() => { });
+	};
+	buttons: readonly vscode.QuickInputButton[] = [];
+	onDidTriggerButton: vscode.Event<vscode.QuickInputButton> = (_) => { return new vscode.Disposable(() => { }); };
+	prompt: string | undefined;
+	validationMessage: string | undefined;
+	title: string | undefined;
+	step: number | undefined;
+	totalSteps: number | undefined;
+	enabled: boolean = false;
+	busy: boolean = false;
+	ignoreFocusOut: boolean = false;
+	show(): void { }
+
+	hide(): void {
+		if (this._onDidHideCallback) {
+			this._onDidHideCallback();
+		}
+	}
+	private _onDidHideCallback: ((e: void) => any) | undefined = undefined;
+	onDidHide: vscode.Event<void> = (listener) => {
+		this._onDidHideCallback = listener;
+		return new vscode.Disposable(() => { });
+	};
+	dispose(): void { }
+
+	public async triggerAccept(): Promise<any> {
+		if (this._onDidAcceptCallback) {
+			return await this._onDidAcceptCallback();
+		}
+		return undefined;
+	}
+}