Fix problem page error when datarule is invalid

utility.js

@@ -278,8 +278,8 @@ module.exports = {
 
             if (submitAnswer) testcase.answer = answer.replace('#', i);
 
-            if (!list.includes(testcase.input)) throw `找不到文件 ${testcase.input}`;
-            if (!list.includes(testcase.output)) throw `找不到文件 ${testcase.output}`;
+            if (testcase.input !== '-' && !list.includes(testcase.input)) throw `找不到文件 ${testcase.input}`;
+            if (testcase.output !== '-' && !list.includes(testcase.output)) throw `找不到文件 ${testcase.output}`;
             res[s].cases.push(testcase);
           }
         }

views/problem.ejs

@@ -54,7 +54,7 @@ if (contest) {
             <% } %>
         </div>
         <div class="row" style="margin-top: -23px">
-            <span class="ui label">评测方式：<%= testcases ? (testcases.spj ? 'Special Judge' : '文本比较') : '无测试数据' %></span>
+            <span class="ui label">评测方式：<%= (testcases && !testcases.error) ? (testcases.spj ? 'Special Judge' : '文本比较') : '无测试数据' %></span>
             <span class="ui label">题目类型：<%= { 'submit-answer': '答案提交', 'interaction': '交互', 'traditional': '传统' }[problem.type] %></span>
         </div>
         <div class="row" style="margin-top: -23px">
@@ -197,7 +197,7 @@ if (contest) {
             <% if (problem.type === 'submit-answer') { %>
               <%
               let cases = [];
-              if (testcases) {
+              if (testcases && !testcases.error) {
                 for (let subtasks of testcases) {
                   for (let testcase of subtasks.cases) {
                     cases.push(testcase.answer);