feat: add SSE support to request-client

packages/effects/request/src/request-client/modules/sse.test.ts

@@ -0,0 +1,131 @@
+import type { RequestClient } from '../request-client';
+
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { SSE } from './sse';
+
+// 模拟 TextDecoder
+const OriginalTextDecoder = globalThis.TextDecoder;
+
+beforeEach(() => {
+  vi.stubGlobal(
+    'TextDecoder',
+    class {
+      private decoder = new OriginalTextDecoder();
+      decode(value: Uint8Array, opts?: any) {
+        return this.decoder.decode(value, opts);
+      }
+    },
+  );
+});
+
+// 创建 fetch mock
+const createFetchMock = (chunks: string[], ok = true) => {
+  const encoder = new TextEncoder();
+  let index = 0;
+  return vi.fn().mockResolvedValue({
+    ok,
+    status: ok ? 200 : 500,
+    body: {
+      getReader: () => ({
+        read: async () => {
+          if (index < chunks.length) {
+            return { done: false, value: encoder.encode(chunks[index++]) };
+          }
+          return { done: true, value: undefined };
+        },
+      }),
+    },
+  });
+};
+
+describe('sSE', () => {
+  let client: RequestClient;
+  let sse: SSE;
+
+  beforeEach(() => {
+    vi.restoreAllMocks();
+    client = {
+      getBaseUrl: () => 'http://localhost',
+      instance: {
+        interceptors: {
+          request: {
+            handlers: [],
+          },
+        },
+      },
+    } as unknown as RequestClient;
+    sse = new SSE(client);
+  });
+
+  it('should call requestSSE when postSSE is used', async () => {
+    const spy = vi.spyOn(sse, 'requestSSE').mockResolvedValue(undefined);
+    await sse.postSSE('/test', { foo: 'bar' }, { headers: { a: '1' } });
+    expect(spy).toHaveBeenCalledWith(
+      '/test',
+      { foo: 'bar' },
+      {
+        headers: { a: '1' },
+        method: 'POST',
+      },
+    );
+  });
+
+  it('should throw error if fetch response not ok', async () => {
+    vi.stubGlobal('fetch', createFetchMock([], false));
+    await expect(sse.requestSSE('/bad')).rejects.toThrow(
+      'HTTP error! status: 500',
+    );
+  });
+
+  it('should trigger onMessage and onEnd callbacks', async () => {
+    const messages: string[] = [];
+    const onMessage = vi.fn((msg: string) => messages.push(msg));
+    const onEnd = vi.fn();
+
+    vi.stubGlobal('fetch', createFetchMock(['hello', ' world']));
+
+    await sse.requestSSE('/sse', undefined, { onMessage, onEnd });
+
+    expect(onMessage).toHaveBeenCalledTimes(2);
+    expect(messages.join('')).toBe('hello world');
+    expect(onEnd).toHaveBeenCalledWith('hello world');
+  });
+
+  it('should apply request interceptors', async () => {
+    const interceptor = vi.fn(async (config) => {
+      config.headers['x-test'] = 'intercepted';
+      return config;
+    });
+    (client.instance.interceptors.request as any).handlers.push({
+      fulfilled: interceptor,
+    });
+
+    vi.stubGlobal('fetch', createFetchMock(['data']));
+
+    // 创建 fetch mock，并挂到全局
+    const fetchMock = createFetchMock(['data']);
+    vi.stubGlobal('fetch', fetchMock);
+    await sse.requestSSE('/sse', undefined, {});
+
+    expect(interceptor).toHaveBeenCalled();
+    expect(fetchMock).toHaveBeenCalledWith(
+      'http://localhost//sse',
+      expect.objectContaining({
+        headers: expect.objectContaining({ 'x-test': 'intercepted' }),
+      }),
+    );
+  });
+
+  it('should throw error when no reader', async () => {
+    vi.stubGlobal(
+      'fetch',
+      vi.fn().mockResolvedValue({
+        ok: true,
+        status: 200,
+        body: null,
+      }),
+    );
+    await expect(sse.requestSSE('/sse')).rejects.toThrow('No reader');
+  });
+});