fix(partner): 优化马豆汇率高精度自适应展示，防止微小汇率被截断四舍五入

tests/verify_madow_rate_precision_no_round_spec.js

@@ -0,0 +1,120 @@
+const fs = require('fs');
+const path = require('path');
+
+let passed = 0;
+let failed = 0;
+
+function assert(condition, testName, detail = '') {
+    if (condition) {
+        console.log(` [PASS] ${testName}`);
+        passed++;
+    } else {
+        console.error(` [FAIL] ${testName} - ${detail}`);
+        failed++;
+    }
+}
+
+console.log("========================================================");
+console.log("  马豆汇率高精度（不四舍五入）全链路自适应规范自动化测试");
+console.log("========================================================\n");
+
+// 1. 验证 IdentityService.php 的 formatRate 改造
+const identityPath = path.resolve(__dirname, '../addons/shopro/service/partner/IdentityService.php');
+assert(fs.existsSync(identityPath), 'IdentityService.php 存在');
+const identityContent = fs.readFileSync(identityPath, 'utf-8');
+
+assert(
+    !identityContent.includes("number_format((float) $value, 8, '.', '')"),
+    'formatRate() 已废除死锁的 8 位截断四舍五入 number_format(..., 8)'
+);
+assert(
+    identityContent.includes("number_format($floatVal, 12, '.', '')"),
+    'formatRate() 升级为 12 位高精度展开，杜绝科学计数法并容纳 9~12 位微小汇率'
+);
+assert(
+    identityContent.includes("rtrim(rtrim($formatted, '0'), '.')"),
+    'formatRate() 具备末尾无效 0 动态裁切能力，实现原值精准输出'
+);
+
+// 2. 验证 RateService.php 的 calcRate 计算精度
+const rateServicePath = path.resolve(__dirname, '../addons/shopro/service/partner/RateService.php');
+assert(fs.existsSync(rateServicePath), 'RateService.php 存在');
+const rateServiceContent = fs.readFileSync(rateServicePath, 'utf-8');
+
+assert(
+    rateServiceContent.includes("number_format($base, 12, '.', '')"),
+    'calcRate() 展开 baseStr 使用 12 位高精度，防止乘法前被截断'
+);
+assert(
+    rateServiceContent.includes("bcmul($baseStr, $multipleStr, 12)"),
+    'calcRate() 使用 bcmul 保留 12 位高精度安全计算'
+);
+
+// 3. 验证 DailySettleService 与 PartnerClean 统一调用
+const dailySettlePath = path.resolve(__dirname, '../addons/shopro/service/partner/DailySettleService.php');
+const dailySettleContent = fs.readFileSync(dailySettlePath, 'utf-8');
+assert(
+    dailySettleContent.includes("'rate' => IdentityService::formatRate($rate)"),
+    'DailySettleService 试算预览统一使用 IdentityService::formatRate'
+);
+
+const cleanCmdPath = path.resolve(__dirname, '../addons/shopro/console/PartnerClean.php');
+const cleanCmdContent = fs.readFileSync(cleanCmdPath, 'utf-8');
+assert(
+    cleanCmdContent.includes("IdentityService::formatRate($resetRate)"),
+    'PartnerClean 重置提示统一使用 IdentityService::formatRate'
+);
+
+// 4. 精确模拟 PHP formatRate 算法逻辑测试
+function formatRateSim(value) {
+    if (value === null || value === '' || value === undefined) {
+        value = '0.00000075';
+    }
+    const floatVal = parseFloat(value);
+    if (isNaN(floatVal) || floatVal <= 0) {
+        return '0';
+    }
+    // 模拟 number_format($floatVal, 12, '.', '')
+    const formatted = floatVal.toFixed(12);
+    // 模拟 rtrim(rtrim($formatted, '0'), '.')
+    const trimmed = formatted.replace(/\.?0+$/, '');
+    return trimmed !== '' ? trimmed : '0';
+}
+
+// 针对用户实际痛点：设置 0.000000715 时不可四舍五入为 0.00000072
+assert(
+    formatRateSim('0.000000715') === '0.000000715',
+    '汇率 0.000000715（9位小数）精准输出为 0.000000715，不发生四舍五入'
+);
+assert(
+    formatRateSim('0.000000715') !== '0.00000072',
+    '汇率 0.000000715 绝对不能被四舍五入成 0.00000072'
+);
+assert(
+    formatRateSim('0.00000075') === '0.00000075',
+    '默认汇率 0.00000075（8位小数）保持为 0.00000075'
+);
+assert(
+    formatRateSim('0.0000007153') === '0.0000007153',
+    '高精度汇率 0.0000007153（10位小数）精准输出为 0.0000007153'
+);
+assert(
+    formatRateSim(0.000000715 * 2) === '0.00000143',
+    '翻倍汇率 0.000000715 * 2 = 0.00000143 精确输出，不被截断'
+);
+assert(
+    formatRateSim('0') === '0',
+    '0 值正确输出为 0'
+);
+assert(
+    formatRateSim(null) === '0.00000075',
+    'null 兜底输出基准汇率 0.00000075'
+);
+
+console.log("\n--------------------------------------------------------");
+console.log(`测试执行结果: 通过 ${passed} 项, 失败 ${failed} 项`);
+console.log("========================================================\n");
+
+if (failed > 0) {
+    process.exit(1);
+}