fixed testing cache

src/test/db.json

@@ -99,7 +99,7 @@
       {
         "_id": {"$oid":"400000000000000000000007"},
         "number": "34",
-        "type": "liquid",
+        "type": "other",
         "color": "black",
         "batch": "",
         "condition": {},

src/test/helper.ts

@@ -29,7 +29,10 @@ export default class TestHelper {
   }
 
   static beforeEach (server, done) {
-    delete require.cache[require.resolve('../index')];  // prevent loading from cache
+    // delete cached server code except models as these are needed in the testing files as well
+    Object.keys(require.cache).filter(e => /API\\dist\\(?!(models|db|test))/.test(e)).forEach(key => {
+      delete require.cache[key];  // prevent loading from cache
+    });
     server = require('../index');
     db.drop(err => {  // reset database
       if (err) return done(err);
@@ -38,10 +41,13 @@ export default class TestHelper {
     return server
   }
 
-  static request (server, done, options) {  // options in form: {method, url, contentType, auth: {key/basic: 'name' or 'key'/{name, pass}}, httpStatus, req, res, default (set to false if you want to dismiss default .end handling)}
+  // options in form: {method, url, contentType, auth: {key/basic: 'name' or 'key'/{name, pass}}, httpStatus, req, res,
+  // default (set to false if you want to dismiss default .end handling)}
+  static request (server, done, options) {
     let st = supertest(server);
     if (options.hasOwnProperty('auth') && options.auth.hasOwnProperty('key')) {  // resolve API key
-      options.url += '?key=' + (this.auth.hasOwnProperty(options.auth.key)? this.auth[options.auth.key].key : options.auth.key);
+      options.url += '?key=' +
+        (this.auth.hasOwnProperty(options.auth.key)? this.auth[options.auth.key].key : options.auth.key);
     }
     switch (options.method) {  // http method
       case 'get':
@@ -91,10 +97,12 @@ export default class TestHelper {
         done();
       });
     }
-    else if (options.hasOwnProperty('log')) {  // check changelog, takes log: {collection, skip, data/(dataAdd, dataIgn)}
+    // check changelog, takes log: {collection, skip, data/(dataAdd, dataIgn)}
+    else if (options.hasOwnProperty('log')) {
       return st.end(err => {
         if (err) return done (err);
-        ChangelogModel.findOne({}).sort({_id: -1}).skip(options.log.skip? options.log.skip : 0).lean().exec((err, data) => {  // latest entry
+        ChangelogModel.findOne({}).sort({_id: -1}).skip(options.log.skip? options.log.skip : 0)
+          .lean().exec((err, data) => {  // latest entry
           if (err) return done(err);
           should(data).have.only.keys('_id', 'action', 'collectionName', 'conditions', 'data', 'user_id', '__v');
           should(data).have.property('action', options.method.toUpperCase() + ' ' + options.url);