test(calculate-version): 補上 GITEA_SERVER_URL 驗證與 main 失敗路徑測試

新增 config 的 URL 格式/協定驗證測試，以及以相依注入覆蓋 main 成功與 loadConfig/fetchReleases 失敗路徑的整合測試。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

test/config.test.js

@@ -59,3 +59,17 @@ test('loadConfig 缺少 token 視為匿名（null）', () => {
 test('loadConfig 缺少必填項目時拋錯', () => {
     assert.throws(() => loadConfig({ GITEA_REPOSITORY: 'owner/repo' }), /GITEA_SERVER_URL 未設定/);
 });
+
+test('loadConfig 於 GITEA_SERVER_URL 非合法 URL 時拋錯', () => {
+    assert.throws(() => loadConfig({
+        GITEA_SERVER_URL: 'not-a-url',
+        GITEA_REPOSITORY: 'owner/repo',
+    }), /GITEA_SERVER_URL 格式錯誤/);
+});
+
+test('loadConfig 於 GITEA_SERVER_URL 使用非 http(s) 協定時拋錯', () => {
+    assert.throws(() => loadConfig({
+        GITEA_SERVER_URL: 'ftp://gitea.example.com',
+        GITEA_REPOSITORY: 'owner/repo',
+    }), /必須使用 http 或 https/);
+});

test/index.test.js

@@ -0,0 +1,59 @@
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { main } = require('../app/index');
+
+// 安靜的 log 記錄器，避免測試輸出雜訊
+const silentLog = { section() {}, info() {}, error() {} };
+
+const okConfig = {
+    serverUrl: 'https://gitea.example.com',
+    repository: 'owner/repo',
+    token: null,
+    isBeta: false,
+};
+
+test('main 成功時計算版本並寫出 output', async () => {
+    let written;
+    const version = await main({
+        loadConfig: () => okConfig,
+        fetchReleases: async () => ([{ tag_name: 'v1.2.3' }]),
+        writeOutput: (name, value) => { written = { name, value }; },
+        log: silentLog,
+    });
+
+    assert.equal(version, '1.2.4');
+    assert.deepEqual(written, { name: 'version', value: '1.2.4' });
+});
+
+test('main 將 release URL 與 token 傳給 fetchReleases', async () => {
+    let receivedUrl;
+    let receivedOptions;
+    await main({
+        loadConfig: () => ({ ...okConfig, token: 'secret' }),
+        fetchReleases: async (url, options) => { receivedUrl = url; receivedOptions = options; return []; },
+        writeOutput: () => {},
+        log: silentLog,
+    });
+
+    assert.equal(receivedUrl, 'https://gitea.example.com/api/v1/repos/owner/repo/releases');
+    assert.equal(receivedOptions.token, 'secret');
+});
+
+test('main 於 loadConfig 失敗時向外拋出', async () => {
+    await assert.rejects(() => main({
+        loadConfig: () => { throw new Error('GITEA_SERVER_URL 未設定'); },
+        log: silentLog,
+    }), /GITEA_SERVER_URL 未設定/);
+});
+
+test('main 於 fetchReleases 失敗時向外拋出', async () => {
+    await assert.rejects(() => main({
+        loadConfig: () => okConfig,
+        fetchReleases: async () => { throw new Error('release API 請求失敗 (page=1)'); },
+        writeOutput: () => {},
+        log: silentLog,
+    }), /release API 請求失敗/);
+});