add more tests to Jenkinsfile

Jenkinsfile

@@ -10,13 +10,26 @@ pipeline {
         
         stage('Build') {
             steps {
+                sh 'make -j$(nproc) build',
                 sh 'make -j$(nproc) test'
             }
         }
 
         stage('Test') {
             steps {
-                sh './tester'
+                sh './tester test/testcases_sort_official',
+                sh './tester test/testcases_sort_custom',
+
+                try {
+                    sh './tester test/testcases_sort_wrong'
+                    error("Wrong test indicates success!")
+                } catch (Exception e) {}
+            }
+        }
+
+        stage('Clean Up') {
+            steps {
+                sh 'make clean'
             }
         }
     }