Merge branch 'feature-collections' into develop

lib/db.js

@@ -34,6 +34,11 @@ class DB {
     }
 
     this.MongoClient = mongoClient || MongoClient;
+
+    this.conn = this.MongoClient.connect(this.url, {
+      useUnifiedTopology: true,
+    });
+
     return this;
   }
 
@@ -67,10 +72,7 @@ class DB {
   };
 
   get connection() {
-    return this.MongoClient.connect(this.url, {
-      useUnifiedTopology: true,
-      useNewUrlParser: true,
-    }).then(result => result.db(this.config.database));
+    return this.conn.then(result => result.db(this.config.database));
   }
 
   get validConfig() {

package.json

@@ -7,10 +7,10 @@
     "test": "tests"
   },
   "scripts": {
-    "test": "npm run test:unit-coverage && npm run test:integration",
+    "test": "npm run test:coverage && npm run test:integration",
     "test:unit": "mocha ./test/lib/**.test.js --exit",
     "test:integration": "mocha ./test/integration.test.js --exit",
-    "test:unit-coverage": "nyc --reporter=lcov mocha ./test/lib/**.test.js"
+    "test:coverage": "npx nyc@latest --reporter=lcov --reporter=text-summary npm run test:unit"
   },
   "repository": {
     "type": "git",

test/integration.test.js

@@ -117,5 +117,33 @@ describe('Test integration with mongo db', () => {
           done();
         });
     });
+
+    it('expect create data in two collections', (done) => {
+      const col = db.collection('new_collection');
+
+      col('insert', { name: 'verify' })
+        .then((ops) => {
+
+          expect(ops.result).to.be.a('object');
+          expect(ops.result).to.have.property('ok');
+          expect(ops.result.ok).to.be.equal(1);
+
+          done();
+        });
+
+      const col2 = db.collection('new_collection2');
+
+      col2('insert', { name: 'verify' })
+        .then((ops) => {
+
+          expect(ops.result).to.be.a('object');
+          expect(ops.result).to.have.property('ok');
+          expect(ops.result.ok).to.be.equal(1);
+
+          done();
+        });
+    });
+
+
   });
 });