diff --git a/app/test/config.test.js b/app/test/config.test.js
index c41bed6..d673eab 100644
--- a/app/test/config.test.js
+++ b/app/test/config.test.js
@@ -95,6 +95,15 @@ test('loadConfig 於 GITEA_REPOSITORY 格式錯誤或含路徑穿越時拋錯',
     }), /GITEA_REPOSITORY 格式錯誤/);
 });
 
+test('loadConfig 於 GITEA_REPOSITORY 邊界格式（空段/缺斜線/多段）皆拋錯', () => {
+    for (const repo of ['noslash', 'owner/', '/repo', 'a/b/c', 'owner//repo']) {
+        assert.throws(() => loadConfig({
+            GITEA_SERVER_URL: 'https://gitea.example.com',
+            GITEA_REPOSITORY: repo,
+        }), /GITEA_REPOSITORY 格式錯誤/, `應拒絕：${repo}`);
+    }
+});
+
 test('loadConfig 接受含點號的合法 owner/repo', () => {
     const config = loadConfig({
         GITEA_SERVER_URL: 'https://gitea.example.com',
diff --git a/app/test/logger.test.js b/app/test/logger.test.js
index 390b4dc..6484a58 100644
--- a/app/test/logger.test.js
+++ b/app/test/logger.test.js
@@ -5,51 +5,40 @@ const assert = require('node:assert/strict');
 
 const logger = require('../logger');
 
-// 暫時攔截 process.stdout.write，回傳期間內寫出的內容
-function captureStdout(fn) {
-    const original = process.stdout.write;
+// 暫時攔截指定標準串流（'stdout' / 'stderr'）的 write，回傳期間內寫出的內容；
+// 結束時於 finally 還原原本的 write，避免狀態污染
+function captureStream(streamName, fn) {
+    const stream = process[streamName];
+    const original = stream.write;
     let out = '';
-    process.stdout.write = (chunk) => { out += chunk; return true; };
+    stream.write = (chunk) => { out += chunk; return true; };
     try {
         fn();
     } finally {
-        process.stdout.write = original;
-    }
-    return out;
-}
-
-// 暫時攔截 process.stderr.write，回傳期間內寫出的內容
-function captureStderr(fn) {
-    const original = process.stderr.write;
-    let out = '';
-    process.stderr.write = (chunk) => { out += chunk; return true; };
-    try {
-        fn();
-    } finally {
-        process.stderr.write = original;
+        stream.write = original;
     }
     return out;
 }
 
 test('section 以主/次分隔線包夾標題輸出至 stdout', () => {
-    const out = captureStdout(() => logger.section('參數檢查'));
+    const out = captureStream('stdout', () => logger.section('參數檢查'));
     const line = '='.repeat(50);
     const subline = '-'.repeat(50);
     assert.equal(out, `\n${line}\n參數檢查\n${subline}\n`);
 });
 
 test('info 以 [info] 前綴與換行輸出至 stdout', () => {
-    const out = captureStdout(() => logger.info('IS_BETA=false'));
+    const out = captureStream('stdout', () => logger.info('IS_BETA=false'));
     assert.equal(out, '[info] IS_BETA=false\n');
 });
 
 test('error 以 [error] 前綴與換行輸出至 stderr', () => {
-    const out = captureStderr(() => logger.error('GITEA_SERVER_URL 未設定'));
+    const out = captureStream('stderr', () => logger.error('GITEA_SERVER_URL 未設定'));
     assert.equal(out, '[error] GITEA_SERVER_URL 未設定\n');
 });
 
 test('error 僅輸出不終止行程，呼叫後仍可繼續執行', () => {
     let reached = false;
-    captureStderr(() => { logger.error('still alive'); reached = true; });
+    captureStream('stderr', () => { logger.error('still alive'); reached = true; });
     assert.equal(reached, true);
 });