diff --git a/packages/language-services/src/features/__tests__/code-actions-extract.test.ts b/packages/language-services/src/features/__tests__/code-actions-extract.test.ts
index 2393adf0..6734d17d 100644
--- a/packages/language-services/src/features/__tests__/code-actions-extract.test.ts
+++ b/packages/language-services/src/features/__tests__/code-actions-extract.test.ts
@@ -32,7 +32,10 @@ const getEdit = (result: CodeAction): TextEdit[] => {
 };
 
 test("extraction for variable", async () => {
-	const document = fileSystemProvider.createDocument("--var: black;");
+	const document = fileSystemProvider.createDocument([
+		"--var: black;",
+		".a { color: var(--var); }",
+	]);
 
 	const result = await ls.getCodeActions(
 		document,
diff --git a/packages/language-services/src/utils/test-helpers.ts b/packages/language-services/src/utils/test-helpers.ts
index 7c765234..aa9d7c3d 100644
--- a/packages/language-services/src/utils/test-helpers.ts
+++ b/packages/language-services/src/utils/test-helpers.ts
@@ -1,3 +1,4 @@
+import { EOL } from "node:os";
 import { join } from "path";
 import {
 	LanguageServiceOptions,
@@ -19,7 +20,7 @@ class MemoryFileSystem implements FileSystemProvider {
 		lines: string[] | string,
 		options: { uri?: string; languageId?: string; version?: number } = {},
 	): TextDocument {
-		const text = Array.isArray(lines) ? lines.join("\n") : lines;
+		const text = Array.isArray(lines) ? lines.join(EOL) : lines;
 		const uri = URI.file(join(process.cwd(), options.uri || "index.scss"));
 		const document = TextDocument.create(
 			uri.toString(),