update

test/poll-available-formats.test.js

@@ -0,0 +1,73 @@
+'use strict';
+const assert = require('node:assert');
+const { shouldReadImage } = require('../lib/poll-guard');
+
+let passed = 0;
+function check(name, fn) {
+  try { fn(); console.log('  ok -', name); passed++; }
+  catch (e) { console.error('  FAIL -', name, e.message); process.exitCode = 1; }
+}
+
+check('纯文本时返回 false', () => {
+  assert.strictEqual(shouldReadImage(['text/plain']), false);
+  assert.strictEqual(shouldReadImage(['text/html']), false);
+});
+
+check('空数组返回 false', () => {
+  assert.strictEqual(shouldReadImage([]), false);
+});
+
+check('空格式列表返回 false', () => {
+  assert.strictEqual(shouldReadImage(['']), false);
+});
+
+check('纯图片返回 true', () => {
+  assert.strictEqual(shouldReadImage(['image/png']), true);
+  assert.strictEqual(shouldReadImage(['image/bmp']), true);
+  assert.strictEqual(shouldReadImage(['image/jpeg']), true);
+});
+
+check('文本+图片混合返回 true', () => {
+  assert.strictEqual(shouldReadImage(['text/plain', 'image/png']), true);
+});
+
+check('非数组容错', () => {
+  assert.strictEqual(shouldReadImage(null), false);
+  assert.strictEqual(shouldReadImage(undefined), false);
+  assert.strictEqual(shouldReadImage('image/png'), false);
+});
+
+check('非字符串元素容错', () => {
+  assert.strictEqual(shouldReadImage([null, 'image/png']), true);
+  assert.strictEqual(shouldReadImage([42, 'text/plain']), false);
+});
+
+check('只匹配 image/ 开头，不被 text/image 之类误判', () => {
+  assert.strictEqual(shouldReadImage(['text/image']), false);
+});
+
+// ---------- 主进程接入回归 ----------
+
+const fs = require('node:fs');
+const path = require('node:path');
+const mainSrc = fs.readFileSync(path.join(__dirname, '..', 'main.js'), 'utf8');
+
+check('main.js 已 require poll-guard', () => {
+  assert.ok(
+    /require\(\s*'\.\/lib\/poll-guard'\s*\)/.test(mainSrc),
+    'main.js 没 require poll-guard'
+  );
+});
+
+check('pollClipboard 在 readImage 前调用了 shouldReadImage', () => {
+  // 抓出 pollClipboard 整个函数体
+  const fn = mainSrc.match(/function pollClipboard[\s\S]*?\n\}/);
+  assert.ok(fn, '找不到 pollClipboard');
+  const idxGuard = fn[0].indexOf('shouldReadImage');
+  const idxRead = fn[0].indexOf('readImage');
+  assert.ok(idxGuard > 0, 'pollClipboard 没调用 shouldReadImage');
+  assert.ok(idxRead > 0, 'pollClipboard 没调用 readImage');
+  assert.ok(idxGuard < idxRead, 'shouldReadImage 必须在 readImage 之前出现');
+});
+
+console.log(`\n${passed} checks passed`);