Move SQL 2019 extension's notebook code into Azure Data Studio (#4090)

extensions/notebook/src/test/common/stubs.ts

@@ -0,0 +1,46 @@
+
+'use strict';
+
+import * as vscode from 'vscode';
+
+export class MockExtensionContext implements vscode.ExtensionContext {
+	logger: undefined;
+	logDirectory: './';
+	subscriptions: { dispose(): any; }[];
+	workspaceState: vscode.Memento;
+	globalState: vscode.Memento;
+	extensionPath: string;
+	asAbsolutePath(relativePath: string): string {
+		return relativePath;
+	}
+	storagePath: string;
+
+	constructor() {
+		this.subscriptions = [];
+	}
+}
+
+export class MockOutputChannel implements vscode.OutputChannel {
+	name: string;
+
+	append(value: string): void {
+		throw new Error('Method not implemented.');
+	}
+	appendLine(value: string): void {
+		throw new Error('Method not implemented.');
+	}
+	clear(): void {
+		throw new Error('Method not implemented.');
+	}
+	show(preserveFocus?: boolean): void;
+	show(column?: vscode.ViewColumn, preserveFocus?: boolean): void;
+	show(column?: any, preserveFocus?: any): void {
+		throw new Error('Method not implemented.');
+	}
+	hide(): void {
+		throw new Error('Method not implemented.');
+	}
+	dispose(): void {
+		throw new Error('Method not implemented.');
+	}
+}