初始化提交：go比特版本精简

tests/bit_api_open_concurrency.test.js

@@ -0,0 +1,64 @@
+const assert = require('assert');
+
+const {
+  setOpenBrowserConcurrency,
+  _private: { Semaphore, openBrowserSemaphore, collectBrowserPages },
+} = require('../src/core/bit_api');
+
+(async () => {
+  const semaphore = new Semaphore(2);
+  await semaphore.acquire();
+  await semaphore.acquire();
+
+  let released = 0;
+  const waiters = Array.from({ length: 3 }, () => semaphore.acquire().then(() => { released++; }));
+  await new Promise(resolve => setImmediate(resolve));
+  assert.strictEqual(semaphore.getStats().queued, 3, '超过并发上限的请求应进入队列');
+
+  semaphore.setMax(5);
+  await Promise.all(waiters);
+  assert.strictEqual(released, 3, '提高并发上限后应立即释放新增名额');
+  assert.strictEqual(semaphore.getStats().max, 5);
+
+  const configured = setOpenBrowserConcurrency(50);
+  assert.strictEqual(configured, 50, '打开请求并发应跟随任务设置');
+  assert.strictEqual(openBrowserSemaphore.getStats().max, 50);
+
+  const pageCalls = [];
+  const pagedApi = {
+    async listBrowsers({ page, pageSize }) {
+      pageCalls.push({ page, pageSize });
+      const all = Array.from({ length: 186 }, (_, index) => ({ id: `browser-${index + 1}`, seq: index + 1 }));
+      const start = page * 100;
+      return {
+        success: true,
+        data: { page, pageSize, totalNum: all.length, list: all.slice(start, start + pageSize) },
+      };
+    },
+  };
+  const allBrowsers = await collectBrowserPages(pagedApi, { pageSize: 1000 });
+  assert.strictEqual(allBrowsers.length, 186, '比特窗口超过100个时必须自动读取后续页面');
+  assert.deepStrictEqual(pageCalls.map(call => call.page), [0, 1]);
+
+  const largePageCalls = [];
+  const largePagedApi = {
+    async listBrowsers({ page, pageSize }) {
+      largePageCalls.push({ page, pageSize });
+      const totalNum = 1250;
+      const start = page * 100;
+      const list = Array.from(
+        { length: Math.max(0, Math.min(pageSize, totalNum - start)) },
+        (_, index) => ({ id: `large-browser-${start + index + 1}`, seq: start + index + 1 }),
+      );
+      return { success: true, data: { page, pageSize, totalNum, list } };
+    },
+  };
+  const largeBrowsers = await collectBrowserPages(largePagedApi, { maxItems: 10000 });
+  assert.strictEqual(largeBrowsers.length, 1250, '完整同步不能在1000个窗口处截断');
+  assert.strictEqual(largePageCalls.length, 13, '1250个窗口应按100个一页读取完成');
+
+  console.log('bit_api_open_concurrency.test.js: PASS');
+})().catch(error => {
+  console.error(error);
+  process.exitCode = 1;
+});