Test improved workspace edit api

[jrieken]

Refs: #10659

• win @isidorn
• linux @joaomoreno

Complexity: 2

We have enhanced the WorkspaceEdit-api to allow to create, delete, and rename files. Test that

• everything works as advertised
• things behave reasonable in corner cases, e.g. delete a file, then update it

[jrieken]

FYI - to test against the latest API do the following:

• open your extensions package.json file
• change the engine.vscode property to *
• run npm run postinstall (assuming you have the vscode module as dev-dependency)
• undo the engine-version change from step 2
• from the vscode-repo copy the vscode.proposed.d.ts-file into your project
• in your package.json file add enableProposedApi: true

[isidorn]

Here's an example to help with testing

'use strict';
// The module 'vscode' contains the VS Code extensibility API
// Import the module and reference it with the alias vscode in your code below
import * as vscode from 'vscode';

// this method is called when your extension is activated
// your extension is activated the very first time the command is executed
export function activate(context: vscode.ExtensionContext) {

    let disposable = vscode.commands.registerCommand('extension.sayHello', () => {
        const workspaceEdit = new vscode.WorkspaceEdit();
        workspaceEdit.deleteFile(vscode.Uri.file('/Users/isidor/development/w/june/one'));
        workspaceEdit.createFile(vscode.Uri.file('/Users/isidor/development/w/june/two'));
        workspaceEdit.renameFile(vscode.Uri.file('/Users/isidor/development/w/june/two'), vscode.Uri.file('/Users/isidor/development/w/june/two'));
        vscode.workspace.applyEdit(workspaceEdit);
    });

    context.subscriptions.push(disposable);
}