Updated tester

tester.js

 "use strict";
 
 const mongoose = require('mongoose');
-const logger = require('../libs/log');
 
 const CustomTesterSchema = new mongoose.Schema({
     name: {
@@ -19,31 +18,18 @@ module.exports.schema = CustomTesterSchema;
 const CustomTester = mongoose.connection.model('CustomTester', CustomTesterSchema);
 module.exports.model = CustomTester;
 
-module.exports.getCustomTesters = () => {
-    return CustomTester.find({})
-        .catch(err => {
-            logger.error(err);
-        });
+module.exports.getAll = () => {
+    return CustomTester.find({});
 };
 
-module.exports.getTester = (testerId) => {
-    return CustomTester.findOne({_id: testerId})
-        .catch(err => {
-            logger.error(err);
-        });
+module.exports.get = id => {
+    return CustomTester.findOne({_id: id});
 };
 
-module.exports.addTester = (name, fileId) => {
-    return (new CustomTester({name: name, sourceFile: fileId}))
-        .save()
-        .catch(err => {
-            logger.error(err);
-        });
+module.exports.add = (name, sourceFile) => {
+    return (new CustomTester({name, sourceFile})).save();
 };
 
-module.exports.updateTester = (testerId, name, fileId) => {
-    return CustomTester.findOneAndUpdate({_id: testerId}, {name: name, sourceFile: fileId})
-        .catch(err => {
-            logger.error(err);
-        });
+module.exports.update = (id, name, sourceFile) => {
+    return CustomTester.findOneAndUpdate({_id: id}, {name: name, sourceFile: sourceFile});
 };