Add file path test for watcher

lib/watcher.ts

@@ -14,5 +14,6 @@ export function startFileWatcher(watchPaths: string[], callback: Function): FSWa
 		const absolutePath = path.resolve(relativePath)
 		callback(event, absolutePath);
 	});
+
   return watcher;
 }

tests/unit/devNoMock.ts

@@ -0,0 +1,40 @@
+import { startFileWatcher } from "@/lib/watcher";
+import path from "path";
+import fs from "fs";
+
+describe("File Watcher Tests", () => {
+	let watcher;
+	const tempDirPath = path.join(__dirname, "temp-test");
+
+  it("should call the file watcher callback with the correct attributes", async () => {
+    const mockCallback = jest.fn();
+
+    fs.mkdirSync(tempDirPath, { recursive: true });
+
+    const tempFilePath = path.join(tempDirPath, "temp-file.txt");
+
+		const relativeTempFilePath = path.relative("./", tempFilePath)
+
+    fs.writeFileSync(tempFilePath, "initial content");
+
+    watcher = startFileWatcher([relativeTempFilePath], mockCallback);
+
+    await new Promise((resolve) => setTimeout(resolve, 1000));
+
+    fs.appendFileSync(tempFilePath, "\nadded content");
+
+    await new Promise((resolve) => setTimeout(resolve, 1000));
+
+    expect(mockCallback).toHaveBeenCalled();
+    expect(mockCallback.mock.calls[0][0]).toBe("change");
+    expect(mockCallback.mock.calls[0][1]).toBe(path.resolve(tempFilePath));
+  });
+
+	afterAll(async () => {
+		if (watcher) await watcher.close();
+
+    if (fs.existsSync(tempDirPath)) {
+      fs.rmSync(tempDirPath, { recursive: true, force: true });
+    }
+  });
+});