fix: error handling

need more of this

lib/xapi.js

@@ -69,10 +69,13 @@ class Xapi {
 
     if (err && err.code)
       res.status(400).json({error: err});
-    else
+    else if (err && err.message)
       res.status(500).json({error: 'Internal server error : ' + err.message});
+    else
+      res.status(500).json({error: 'Internal server error : ' + err});
 
     next(err);
+
   }
 
   asyncMiddleware(fn) {
@@ -416,57 +419,67 @@ class Xapi {
 
   async groupBy(req, res) {
 
-    let query = 'select ' + req.query._fields + ',count(*) as count from ?? group by ' + req.query._fields;
-    let params = [];
-    let tableName = req.app.locals._tableName;
+    if (req.query && req.query._fields) {
+      let query = 'select ' + req.query._fields + ',count(*) as count from ?? group by ' + req.query._fields;
+      let params = [];
+      let tableName = req.app.locals._tableName;
 
-    params.push(tableName);
+      params.push(tableName);
 
-    if (!req.query.sort) {
-      req.query._sort = {}
-      req.query._sort = '-count'
-    }
+      if (!req.query.sort) {
+        req.query._sort = {}
+        req.query._sort = '-count'
+      }
 
-    query = query + this.mysql.getOrderByClause(req.query, tableName);
+      query = query + this.mysql.getOrderByClause(req.query, tableName);
 
-    var results = await this.mysql.exec(query, params);
+      var results = await this.mysql.exec(query, params);
+
+      res.status(200).json(results);
+    } else {
+      res.status(400).json({message: 'Missing _fields query params eg: /api/tableName/groupby?_fields=column1'})
+    }
 
-    res.status(200).json(results);
 
   }
 
   async aggregate(req, res) {
 
-    let tableName = req.app.locals._tableName;
-    let query = 'select '
-    let params = []
-    let fields = req.query._fields.split(',');
 
-    for (var i = 0; i < fields.length; ++i) {
-      if (i) {
-        query = query + ','
+    if (req.query && req.query._fields) {
+      let tableName = req.app.locals._tableName;
+      let query = 'select '
+      let params = []
+      let fields = req.query._fields.split(',');
+
+      for (var i = 0; i < fields.length; ++i) {
+        if (i) {
+          query = query + ','
+        }
+        query = query + ' min(??) as ?,max(??) as ?,avg(??) as ?,sum(??) as ?,stddev(??) as ?,variance(??) as ? '
+        params.push(fields[i]);
+        params.push('min_of_' + fields[i]);
+        params.push(fields[i]);
+        params.push('max_of_' + fields[i]);
+        params.push(fields[i]);
+        params.push('avg_of_' + fields[i]);
+        params.push(fields[i]);
+        params.push('sum_of_' + fields[i]);
+        params.push(fields[i]);
+        params.push('stddev_of_' + fields[i]);
+        params.push(fields[i]);
+        params.push('variance_of_' + fields[i]);
       }
-      query = query + ' min(??) as ?,max(??) as ?,avg(??) as ?,sum(??) as ?,stddev(??) as ?,variance(??) as ? '
-      params.push(fields[i]);
-      params.push('min_of_' + fields[i]);
-      params.push(fields[i]);
-      params.push('max_of_' + fields[i]);
-      params.push(fields[i]);
-      params.push('avg_of_' + fields[i]);
-      params.push(fields[i]);
-      params.push('sum_of_' + fields[i]);
-      params.push(fields[i]);
-      params.push('stddev_of_' + fields[i]);
-      params.push(fields[i]);
-      params.push('variance_of_' + fields[i]);
-    }
 
-    query = query + ' from ??'
-    params.push(tableName)
+      query = query + ' from ??'
+      params.push(tableName)
 
-    var results = await this.mysql.exec(query, params);
+      var results = await this.mysql.exec(query, params);
 
-    res.status(200).json(results);
+      res.status(200).json(results);
+    } else {
+      res.status(400).json({message:'Missing _fields in query params eg: /api/tableName/groupby?_fields=numericColumn1'});
+    }
 
   }
 

tests/tests.js

@@ -723,4 +723,29 @@ describe('xmysql : tests', function () {
   });
 
 
+  it('GET /api/orders/aggregate should FAIL', function (done) {
+
+    //post to an url with data
+    agent.get('/api/orders/aggregate')     //enter url
+      .expect(400)//200 for success 4xx for failure
+      .end(function (err, res) {
+        // Handle /api/v error
+
+        done(err)
+
+      });
+  });
+
+  it('GET /api/orders/groupby should FAIL', function (done) {
+
+    //post to an url with data
+    agent.get('/api/orders/groupby')     //enter url
+      .expect(400)//200 for success 4xx for failure
+      .end(function (err, res) {
+        // Handle /api/v error
+        done(err)
+      });
+  });
+
+
 });