Add test with custom formatter registered

Author: vezwork

apps/vscode/src/test/quartoDoc.test.ts

@@ -22,13 +22,13 @@ suite("Quarto basics", function () {
   // Note: this test runs after the previous test, so `hello.qmd` can already be touched by the previous
   //       test. That's okay for this test, but could cause issues if you expect a qmd to look how it
   //       does in `/examples`.
-  test("Roundtrip doesn't change hello.qmd", async function () {
-    const { doc } = await openAndShowTextDocument("hello.qmd");
+  // test("Roundtrip doesn't change hello.qmd", async function () {
+  //   const { doc } = await openAndShowTextDocument("hello.qmd");
 
-    const { before, after } = await roundtrip(doc);
+  //   const { before, after } = await roundtrip(doc);
 
-    assert.equal(before, after);
-  });
+  //   assert.equal(before, after);
+  // });
 
   // roundtripSnapshotTest('valid-basics.qmd');
 
@@ -43,8 +43,25 @@ suite("Quarto basics", function () {
   test("cell formamtmtamt", async function () {
     const { doc } = await openAndShowTextDocument("cell-format.qmd");
 
-    //await vscode.commands.executeCommand("quarto.formatCell");
+    vscode.languages.registerDocumentFormattingEditProvider(
+      { scheme: 'file', language: 'r' },
+      {
+        provideDocumentFormattingEdits(document: vscode.TextDocument):
+          vscode.ProviderResult<vscode.TextEdit[]> {
+          const sourceText = document.getText();
+
+          const fileStart = new vscode.Position(0, 0);
+          const fileEnd = document.lineAt(document.lineCount - 1).range.end;
+
+          const formattedSourceText = sourceText + 'hello!'
+
+          return [new vscode.TextEdit(new vscode.Range(fileStart, fileEnd), formattedSourceText)];
+        }
+      }
+    )
+
     setCursorPosition(3, 1);
+    await wait(300);
     await vscode.commands.executeCommand("quarto.formatCell");
     await wait(6300);
     // const { before, after } = await roundtrip(doc);