create irradiance composite graph

spec/client/lib/databasable.test.js

@@ -0,0 +1,65 @@
+import Loki from 'lokijs/src/lokijs';
+
+import Databasable from './../../../client/lib/databasable';
+
+class DbClass {
+  constructor(){
+    Object.assign(this, Databasable);
+  }
+
+  get lokijs_options(){
+    return {
+      adapter: null
+    };
+  }
+
+  doSomethingWithCollection(){
+    var db_class = this;
+    return db_class.collection('yadadb', 'yada_collection')
+      .then((collection)=>{
+        db_class.collection = collection;
+      })
+      .then(()=>{
+        db_class.worked = db_class.collection instanceof Loki.Collection;
+      });
+  }
+
+}
+
+var db_class;
+
+describe('Databasable', ()=>{
+  beforeEach(()=>{
+    db_class = new DbClass();
+  });
+
+  describe('Databasable#accessDb', ()=>{
+    it('should initiate a new database', (done)=>{
+      db_class.accessDb('yadadb')
+        .then(()=>{
+          expect(db_class.db instanceof Loki).toEqual(true);
+          done();
+        });
+    });
+  });
+
+  describe('Databasable#collection', ()=>{
+    it('should initiate a new database & collection', (done)=>{
+      db_class.collection('yadadb', 'yada_collection')
+        .then((collection)=>{
+          expect(db_class.db instanceof Loki).toEqual(true);
+          expect(collection instanceof Loki.Collection).toEqual(true);
+          done();
+        });
+    });
+    it('works asynchronously', (done)=>{
+      db_class.doSomethingWithCollection()
+        .then(()=>{
+          expect(db_class.collection instanceof Loki.Collection).toEqual(true);
+          expect(db_class.worked).toEqual(true);
+          done();
+        })
+    });
+  });
+
+});