More tests and fixes

test/abstract_classes.spec.js

@@ -0,0 +1,17 @@
+import {describe, it} from 'mocha';
+import {expect} from 'chai';
+import BaseAPI from '../src/BaseAPI';
+import {BaseCMI} from '../src/cmi/common';
+
+describe('Abstract Class Tests', () => {
+  it('BaseAPI should not be instantiated', () => {
+    expect(
+        () => new BaseAPI(),
+    ).to.throw('Cannot construct BaseAPI instances directly');
+  });
+  it('BaseCMI should not be instantiated', () => {
+    expect(
+        () => new BaseCMI(),
+    ).to.throw('Cannot construct BaseCMI instances directly');
+  });
+});