Add coverage to dom utilities

bunfig.toml

@@ -1,3 +1,4 @@
 [test]
 coverage = true
-coverageThreshold = 1.0
+coverageThreshold = 1.0
+preload = "./happydom.ts"

happydom.ts

@@ -0,0 +1,3 @@
+import { GlobalRegistrator } from "@happy-dom/global-registrator";
+
+GlobalRegistrator.register();

package.json

@@ -48,10 +48,11 @@
   },
   "devDependencies": {
     "@biomejs/biome": "^1.4.1",
+    "@happy-dom/global-registrator": "^12.10.3",
     "bun-types": "^1.0.17",
     "tsup": "^8.0.1",
     "type-fest": "^4.8.3",
     "typescript": "^5.3.3"
   },
-  "packageManager": "[email protected].14"
+  "packageManager": "[email protected].17"
 }

src/dom/popup.test.ts

@@ -0,0 +1,54 @@
+import { beforeEach, describe, expect, it, jest } from "bun:test";
+import { openPopup } from "./popup.js";
+
+const window = globalThis.window as Window | undefined;
+if (!window) {
+	throw new Error("window is not defined");
+}
+
+describe("openPopup", () => {
+	beforeEach(() => {
+		jest.restoreAllMocks();
+	});
+	it("should return a new window object with the correct properties", () => {
+		const url = "https://example.com";
+		const name = "popup";
+		const updatedWindow = {
+			...window,
+			location: {
+				...window.location,
+				href: url,
+			},
+			name,
+		};
+		window.open = jest.fn().mockReturnValue(updatedWindow);
+
+		const windowFeatures = "width=500,height=500";
+		const newWindow = openPopup(url, name, windowFeatures);
+
+		expect(window.open).toHaveBeenCalledWith(
+			url,
+			name,
+			`noopener,noreferrer,${windowFeatures}`,
+		);
+		expect(newWindow).not.toBeNull();
+		expect(newWindow?.location.href).toBe(url);
+		expect(newWindow?.name).toBe(name);
+		expect(newWindow?.opener).toBeNull();
+	});
+	it("should not return a new window object if the browser fails to open the new browsing context", () => {
+		window.open = jest.fn().mockReturnValue(null);
+
+		const url = "https://example.com";
+		const name = "popup";
+		const windowFeatures = "width=500,height=500";
+		const newWindow = openPopup(url, name, windowFeatures);
+
+		expect(window.open).toHaveBeenCalledWith(
+			url,
+			name,
+			`noopener,noreferrer,${windowFeatures}`,
+		);
+		expect(newWindow).toBeNull();
+	});
+});