diff --git a/.gitignore b/.gitignore
index 143763ebb..b3638ee02 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,7 @@ yarn.lock
 .claude
 
 CLAUDE.md
+.omc
 
 test-results
 playwright-report
diff --git a/src/app/service/service_worker/resource.test.ts b/src/app/service/service_worker/resource.test.ts
new file mode 100644
index 000000000..eb279f485
--- /dev/null
+++ b/src/app/service/service_worker/resource.test.ts
@@ -0,0 +1,98 @@
+import { initTestEnv } from "@Tests/utils";
+import { ResourceService } from "./resource";
+import { vi, describe, it, expect, beforeEach } from "vitest";
+import type { Group } from "@Packages/message/server";
+import type { IMessageQueue } from "@Packages/message/message_queue";
+
+initTestEnv();
+
+// mock fetch
+const mockFetch = vi.fn();
+vi.stubGlobal("fetch", mockFetch);
+
+// 创建文本 blob 和二进制 blob 的辅助函数
+function textBlob(content: string, contentType = "text/plain") {
+  return new Blob([content], { type: contentType });
+}
+
+function binaryBlob(bytes: number[]) {
+  return new Blob([new Uint8Array(bytes)], { type: "application/octet-stream" });
+}
+
+function mockResponse(blob: Blob, status = 200, contentType?: string) {
+  return {
+    status,
+    blob: () => Promise.resolve(blob),
+    headers: new Headers(contentType ? { "content-type": contentType } : {}),
+  } as unknown as Response;
+}
+
+describe("ResourceService - loadByUrl", () => {
+  let service: ResourceService;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    const mockGroup = {} as Group;
+    const mockMQ = {} as IMessageQueue;
+    service = new ResourceService(mockGroup, mockMQ);
+    // calculateHash 不影响核心逻辑，直接 mock
+    vi.spyOn(service, "calculateHash").mockResolvedValue({
+      md5: "mock-md5",
+      sha1: "",
+      sha256: "",
+      sha384: "",
+      sha512: "",
+    });
+  });
+
+  it("加载文本资源(require)时应设置 content", async () => {
+    const jsCode = "console.log('hello');";
+    mockFetch.mockResolvedValue(mockResponse(textBlob(jsCode), 200, "application/javascript; charset=utf-8"));
+
+    const res = await service.loadByUrl("https://example.com/lib.js", "require");
+
+    expect(res.url).toBe("https://example.com/lib.js");
+    expect(res.content).toBeTruthy();
+    expect(res.contentType).toBe("application/javascript");
+    expect(res.base64).toBeTruthy();
+    expect(res.type).toBe("require");
+  });
+
+  it("加载文本资源(resource)时应通过 blob.text() 设置 content", async () => {
+    const text = "plain text content";
+    mockFetch.mockResolvedValue(mockResponse(textBlob(text), 200, "text/plain"));
+
+    const res = await service.loadByUrl("https://example.com/data.txt", "resource");
+
+    expect(res.content).toBe(text);
+    expect(res.type).toBe("resource");
+  });
+
+  it("加载二进制资源时 content 应为空", async () => {
+    // 包含 null 字节的二进制数据，isText 会返回 false
+    const bytes = [0x89, 0x50, 0x4e, 0x47, 0x00, 0x00, 0x00, 0x00];
+    mockFetch.mockResolvedValue(mockResponse(binaryBlob(bytes), 200, "image/png"));
+
+    const res = await service.loadByUrl("https://example.com/img.png", "resource");
+
+    expect(res.content).toBe("");
+    expect(res.base64).toBeTruthy();
+    expect(res.contentType).toBe("image/png");
+  });
+
+  it("响应非200时应抛出异常", async () => {
+    mockFetch.mockResolvedValue(mockResponse(textBlob(""), 404));
+
+    await expect(service.loadByUrl("https://example.com/404", "require")).rejects.toThrow(
+      "resource response status not 200: 404"
+    );
+  });
+
+  it("没有 content-type 时应默认为 application/octet-stream", async () => {
+    mockFetch.mockResolvedValue(mockResponse(textBlob("data"), 200));
+
+    const res = await service.loadByUrl("https://example.com/noct", "resource");
+
+    expect(res.contentType).toBe("application/octet-stream");
+  });
+});
diff --git a/src/app/service/service_worker/resource.ts b/src/app/service/service_worker/resource.ts
index ce94a773d..218c1f5c2 100644
--- a/src/app/service/service_worker/resource.ts
+++ b/src/app/service/service_worker/resource.ts
@@ -264,7 +264,7 @@ export class ResourceService {
       throw new Error(`resource response status not 200: ${resp.status}`);
     }
     const data = await resp.blob();
-    const [hash, arrayBuffer, base64] = await Promise.all([
+    const [hash, uint8Array, base64] = await Promise.all([
       this.calculateHash(data),
       blobToUint8Array(data),
       blobToBase64(data),
@@ -280,7 +280,6 @@ export class ResourceService {
       type,
       createtime: Date.now(),
     };
-    const uint8Array = new Uint8Array(arrayBuffer);
     if (isText(uint8Array)) {
       if (type === "require" || type === "require-css") {
         resource.content = await readBlobContent(data, contentType); // @require和@require-css 是会转换成代码运行的，可以进行解码