Fix enrollment integral time test

My mouse is wet
It rained on my computer

src/test/enrollment.js

@@ -417,8 +417,8 @@ describe('request enrollments', () => {
                 res.should.be.json;
                 res.body.should.have.property('result');
                 res.body.result.should.be.a('array');
-                res.body.result[0].should.have.property('period_name');
-                res.body.result[0].should.not.have.property('period_id');
+                res.body.result[0].should.have.property('integral_time_name');
+                res.body.result[0].should.not.have.property('integral_time_id');
                 done();
             });
     });