vscode.executeCodeActionProvider result not eqal to WorkspaceEdit.renameFile

[AlexCannonball]

Type: Bug

Hello,

I've made unit/integration tests for vscode extension via @vscode/test-electron.

When I compare an actual renameFile code action obtained via

async function getCodeActions(
  uri: Uri,
  expectedRange: Range,
): Promise<CodeAction[]> {
  return commands.executeCommand<CodeAction[]>(
    'vscode.executeCodeActionProvider',
    uri,
    expectedRange,
  );
}

and the expected code action created via

const renameFileAction: TExpectedActions = function (uri, { parsedMessage }) {
  const fixedUri = Uri.joinPath(uri, '..', parsedMessage[FIX_KEY]);

  const action = new CodeAction('', CodeActionKind.QuickFix);

  action.isPreferred = true;
  action.edit = new WorkspaceEdit();

  action.edit.renameFile(uri, fixedUri, {
    overwrite: false,
  });

  return [action];
};

I see that there is difference in edit.c[0].to._formatted property. The value in actual object is not null, unlike the expected value (red color for the actual value):

The extension code building this code action is similar to the snippet for expected object in tests:

    const action = new CodeAction(
      `Rename the file to '${parsedMessage[FIX_KEY]}'`,
      CodeActionKind.QuickFix,
    );

    action.isPreferred = true;
    action.edit = new WorkspaceEdit();

    const fixedUri: Uri = Uri.joinPath(uri, '..', parsedMessage[FIX_KEY]);

    action.edit.renameFile(uri, fixedUri, { overwrite: false });

The issue is reproduced when I run tests normally and isn't reproduced when I debug the extension tests with breakpoints.

VS Code version: Code 1.91.1 (f1e16e1, 2024-07-09T22:06:49.809Z)
OS version: Windows_NT x64 10.0.19045
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 7 5700U with Radeon Graphics (16 x 1797)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	14.82GB (6.24GB free)
Process Argv	--log info --log plex.vscode-protolint=trace --crash-reporter-id 1760485e-64d5-4472-924c-6ff6ba32397c
Screen Reader	no
VM	0%

Extensions (10)

Extension	Author (truncated)	Version
vscode-eslint	dba	3.0.10
gitlens	eam	15.2.2
EditorConfig	Edi	0.16.4
prettier-vscode	esb	10.4.0
remote-wsl	ms-	0.88.2
vscode-twoslash-queries	Ort	1.2.2
vscode-yaml	red	1.15.0
code-spell-checker	str	3.0.1
pretty-ts-errors	Yoa	0.5.4
vscode-proto3	zxh	0.5.5

(1 theme extensions excluded)

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