test: draft for testign document formatting with Python code blocks

Author: mcanouil

apps/vscode/src/test/examples/format-python-expected.qmd

@@ -0,0 +1,9 @@
+---
+title: Formatting Python Code Cells
+format: html
+---
+
+```{python}
+#| label: my-code
+1 + 1
+```

apps/vscode/src/test/examples/format-python.qmd

@@ -0,0 +1,9 @@
+---
+title: Formatting Python Code Cells
+format: html
+---
+
+```{python}
+#| label: my-code
+1+1
+```

apps/vscode/src/test/formatting.test.ts

@@ -0,0 +1,30 @@
+import * as vscode from "vscode";
+import * as assert from "assert";
+import * as path from "path";
+import { openAndShowTextDocument, wait, WORKSPACE_PATH } from "./test-utils";
+
+suite("Code Block Formatting", function () {
+  test("Format Python code block", async function () {
+    // Ensure Black formatter extension is installed
+    await vscode.commands.executeCommand("workbench.extensions.installExtension", "ms-python.black-formatter");
+    await wait(1000);
+
+    const { doc, editor } = await openAndShowTextDocument("format-python.qmd");
+
+    // const position = new vscode.Position(7, 2); // Line with "1+1"
+    // editor.selection = new vscode.Selection(position, position);
+    // await vscode.commands.executeCommand("quarto.formatCell");
+    await vscode.commands.executeCommand("vscode.executeFormatDocumentProvider", doc.uri);
+
+    await wait(500);
+
+    const formattedText = doc.getText();
+
+    const expectedDoc = await vscode.workspace.openTextDocument(
+      vscode.Uri.file(path.join(WORKSPACE_PATH, "format-python-expected.qmd"))
+    );
+    const expected = expectedDoc.getText();
+
+    assert.strictEqual(formattedText, expected, "Python code cell options should not be altered after formatting");
+  });
+});