fix: use single quote in tests

packages/vue-language-service/tests/complete.ts

@@ -75,7 +75,6 @@ for (const dirName of testDirs) {
 					expect(result.replace(/\r\n/g, '\n')).toBe(expectedFileText.replace(/\r\n/g, '\n'));
 				});
 			}
-
 		}
 	});
 }

packages/vue-language-service/tests/utils/createTester.ts

@@ -40,7 +40,36 @@ function createTester(root: string) {
 		getScriptSnapshot,
 		getVueCompilationSettings: () => ({}),
 	};
-	const languageService = createLanguageService({ typescript: ts }, host, undefined, undefined, undefined, []);
+	const vscodeSettings: any = {
+		typescript: {
+			preferences: {
+				quoteStyle: 'single',
+			},
+		},
+		javascript: {
+			preferences: {
+				quoteStyle: 'single',
+			},
+		},
+	};
+	const languageService = createLanguageService({ typescript: ts }, host, undefined, undefined, {
+		async getConfiguration<T>(section: string) {
+			const keys = section.split('.');
+			let settings = vscodeSettings;
+			for (const key of keys) {
+				if (key in settings) {
+					settings = settings[key];
+				}
+				else {
+					settings = undefined;
+					break;
+				}
+			}
+			return settings;
+		},
+		onDidChangeConfiguration() { },
+		rootUris: [],
+	}, []);
 
 	return {
 		host,