fix(css-helper): add test for getStyle with missing wildcard and fix formatting

Author: harshentau-spec

packages/tests/__fixtures__/curriculum-helper-css.ts

@@ -37,6 +37,13 @@ a {
   }
 }`;
 
+export const cssWithoutWildcard: string = `
+.box {
+  width: 100px;
+  height: 100px;
+}
+`;
+
 export const cssString = `:root {
   --building-color1: #aa80ff;
   --building-color2: #66cc99;
@@ -47,7 +54,7 @@ export const cssString = `:root {
   --window-color3: #d98cb3;
   --window-color4: #8cb3d9;
 }
-  
+
 * {
   box-sizing: border-box;
 }

packages/tests/css-helper.test.ts

@@ -1,7 +1,22 @@
 // @vitest-environment jsdom
-import { cssString } from "./__fixtures__/curriculum-helper-css";
+import {
+  cssString,
+  cssWithoutWildcard,
+} from "./__fixtures__/curriculum-helper-css";
 import { CSSHelp } from "./../helpers/lib/index";
 
+describe("getStyle with no wildcard in css", () => {
+  it("should return null when wildcard selector is not present in css", () => {
+    const style = document.createElement("style");
+    style.textContent = String(cssWithoutWildcard);
+    document.head.appendChild(style);
+
+    const helper = new CSSHelp(document);
+
+    expect(helper.getStyle("*")).toBeNull();
+  });
+});
+
 describe("css-help", () => {
   const doc = document;
   let t: CSSHelp;