Update one more test

Tests/SourceKitLSPTests/OnTypeFormattingTests.swift

@@ -54,15 +54,13 @@ final class OnTypeFormattingTests: XCTestCase {
     let testClient = try await TestSourceKitLSPClient()
     let uri = DocumentURI(for: .swift)
 
-    let positions = testClient.openDocument(
-      """
+    let source = """
       func foo() {
       1️⃣if let SomeReallyLongVar = 2️⃣    3️⃣Some.More.Stuff(), let a = 4️⃣    5️⃣myfunc() 6️⃣{
       }
       }
-      """,
-      uri: uri
-    )
+      """
+    let positions = testClient.openDocument(source, uri: uri)
 
     let response = try await testClient.send(
       DocumentOnTypeFormattingRequest(
@@ -74,13 +72,18 @@ final class OnTypeFormattingTests: XCTestCase {
     )
 
     let edits = try XCTUnwrap(response)
+    let (_, unmarkedSource) = extractMarkers(source)
+    let formattedSource = unmarkedSource.applying(edits)
+
     XCTAssertEqual(
-      edits,
-      [
-        TextEdit(range: Range(positions["1️⃣"]), newText: "    "),
-        TextEdit(range: positions["2️⃣"]..<positions["3️⃣"], newText: ""),
-        TextEdit(range: positions["4️⃣"]..<positions["5️⃣"], newText: ""),
-      ]
+      formattedSource,
+      """
+      func foo() {
+          if let SomeReallyLongVar = Some.More.Stuff(), let a = myfunc() {
+      }
+      }
+
+      """
     )
   }